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Sample records for coroba jessenia polycarpa

  1. Características físicoquímicas del aceite de la semilla de la coroba (jessenia polycarpa karst

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    Pino, Karina

    2004-12-01

    Full Text Available The coroba (Jessenia polycarpa Karst is an autochthonous plant from the Cedeño Municipality, Bolívar State, in Venezuela, whose fruit forms part of the culinary tradition of the region. The objective of this investigation was to determine the physical-chemical characteristics of the oil from the seed of the coroba, in order to establish its possible uses. The proximate analysis of the seeds separated from mature fruits was as follows: humidity (10.16 0.04 %, fat (58.21 0.04%, raw fiber (21.64 0.07%, ash (2.21 0.09%. Oil extracted from the seeds with organic solvent (n-hexane showed the following values: iodine value ( 5.78 0.04 cg I2/g, peroxide index (1.22 0.04 meq O2/kg, free acidity (0.255% as lauric acid, refraction index at 20 °C (1.4515, phosphorus content (115.5 4.9 ppm. The fatty acid profile of the oil showed lauric acid (41.75% as the major component. These results suggest that coroba oilseed can be considered as a potential substitute for coconut and palmiste oils.La coroba (Jessenia polycarpa Karst es una planta autóctona del Municipio Cedeño, Estado Bolívar, Venezuela, cuyo fruto forma parte de la tradición culinaria de la región. El objetivo de esta investigación fue caracterizar físico-químicamente el aceite presente en la semilla de la coroba de tal manera de establecer su posible uso. Para ello, se emplearon semillas separadas de frutos maduros, a los cuales se les determinó su composición proximal, siendo la misma: humedad 10,16 0,04%, grasa 58,21 0,04%, fibra cruda 21,64 0,07%, cenizas 2,21 0,09%. El aceite fue extraído con solvente orgánico (n-hexano y se le determinó: índice de yodo (5,78 0,04 cg I2/g, índice de peróxido (1,22 0,04 meq O2/kg, acidez libre (0,255 % como ácido láurico, índice de refracción a 20 ºC (1,4515, contenido de f

  2. Transcriptome analysis of female and male flower buds of Idesia polycarpa Maxim. var. vestita Diels

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    Lanju Mei

    2017-09-01

    Conclusion: This work provides the first detailed transcriptome analysis of female and male flower of I. polycarpa and lays foundations for future studies on the molecular mechanisms underlying flower bud development of I. polycarpa.

  3. Anti-Inflammatory Effects and Mechanisms of Fatsia polycarpa Hayata and Its Constituents

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    Hsueh-Ling Cheng

    2013-01-01

    Full Text Available Fatsia polycarpa, a plant endemic to Taiwan, is an herbal medicine known for treating several inflammation-related diseases, but its biological function needs scientific support. Thus, the anti-inflammatory effects and mechanisms of the methanolic crude extract (MCE of F. polycarpa and its feature constituents, that is, brassicasterol (a phytosterol, triterpenoids 3α-hydroxyolean-11,13(18-dien-28-oic acid (HODA, 3α-hydroxyolean-11-en-28,13β-olide (HOEO, fatsicarpain D, and fatsicarpain F, were investigated. MCE and HOEO, but not brassicasterol, dose-dependently inhibited lipopolysaccharide- (LPS-induced expression of inducible nitric oxide synthase and cyclooxygenase-2 in RAW 264.7 macrophage line, whereas HODA, fatsicarpain D and fatsicarpain F were toxic to RAW cells. Additionally, MCE and HOEO suppressed LPS-induced production of nitric oxide, prostaglandin E2, and interleukin-1β and interfered with LPS-promoted activation of the inhibitor kappa B kinase (IKK/nuclear factor-κB (NF-κB pathway, and that of the mitogen-activated protein kinases (MAPKs extracellular signal regulated kinase (ERK, c-Jun N-terminal kinase (JNK, and p38. In animal tests, MCE and HOEO effectively ameliorated 12-O-tetradecanoylphorobol-13 acetate- (TPA-induced ear edema of mice. Thus, MCE of F. polycarpa exhibited an obvious anti-inflammatory activity in vivo and in vitro that likely involved the inhibition of the IKK/NF-κB pathway and the MAPKs, which may be attributed by triterpenoids such as HOEO.

  4. Breeding system and parental effect on fruit characters of Idesia polycarpa (Flacourtiaceae), a promising plant for biodiesel, in northwest China

    International Nuclear Information System (INIS)

    Wang, S.H.; Li, Z.Q.; Xie, Q.

    2017-01-01

    Idesia polycarpa Maxim. is a promising plant for biodiesel in China. We have reported the flowering phenology, breeding system and parental effect on fruit characters of this species distributed in Qinling-Bashan Mountain (Shaanxi Province) nature reserve. As a dioecious plant, the male and female flowered almost synchronously. The anthesis was from around 10th of May and proceeded until the end of May or the beginning of June at population level. To determine the breeding system of I. polycarpa, three pollination treatments were carried out on every three female plants: natural pollination (NP), apomixy (AP) and cross pollination (CP). Reproductive success of apoximy treatment indicated that, as a dioecious plant, I. polycarpa could also reproduce by apomixis. However, the mean fruit set under apomixy treatment was markerly lower (3.6–13.33%) than that of two pollination treatments (>65.69%). Fruit quality (fruit length, fruit width, 100 fruit weight, seed production and seed germination) of the cross pollination treatment was greater than the other two treatments, suggested that pollen competition in cross pollination treatment was the most intense in three treatments. To study parental effect on fruit characters, cross pollination was carried out with three female plants and three male plants. The result showed that maternal parents (P<0.001) and parental interaction significantly affected all the fruit characters (including 100 fruit weight, pulp/fruit ratio, oil content and seed germination) while paternal parents showed significant effects on 100 fruit weight, pulp/fruit ratio and seed germination. Fruit set was only significantly affected by maternal parents (P=0.001). Our findings will facilitate future breeding programs of I. polycarpa in parental selection. (author)

  5. Optimization of Phenolics Extracted from Idesia polycarpa Defatted Fruit Residue and Its Antioxidant and Depigmenting Activity In Vitro and In Vivo

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    Yang Ye

    2014-01-01

    Full Text Available Extraction of phenolics from Idesia polycarpa defatted fruit residue was optimized by the maximization of the yield in total phenolics, using the response surface methodology. The optimized conditions were 50% ethanol, 5 h extraction time, 1 : 40 liquid to solid ratio, and 80°C extraction temperature. The experimental average total phenolics yield was 54.49±4.26 mg/g. These antioxidant properties of phenolics were comprehensively analyzed for the first time. All the extracts not only demonstrated the significant free radical scavenging activities and metal chelating activity but also inhibited lipid, lipoprotein peroxidation and revealed reducing power activity. Ethyl acetate extraction (EAE also inhibited mushroom tyrosinase activity and significantly increased the average skin-whitening index (L value of the skin of C57BL/6 mice, indicating its potential use for skin hyperpigmentation in humans. The results of cell experiments showed EAE could strongly inhibit cellular tyrosinase activity, which had led to the decrease of melanogenesis in B16 mouse melanoma cells. Overall, EAE is an excellent natural antioxidant and depigmenting agent, which can be developed as a new food additive, medicine, and cosmetic.

  6. The Sexual and Mating System of the Shrimp Odontonia katoi (Palaemonidae, Pontoniinae), a Symbiotic Guest of the Ascidian Polycarpa aurata in the Coral Triangle

    Science.gov (United States)

    Baeza, J. Antonio; Hemphill, Carrie A.; Ritson-Williams, Raphael

    2015-01-01

    Theory predicts that monogamy is adaptive in symbiotic crustaceans inhabiting relatively small and morphologically simple hosts in tropical environments where predation risk away from hosts is high. We tested this prediction in the shrimp Odontonia katoi, which inhabits the atrial chamber of the ascidian Polycarpa aurata in the Coral Triangle. Preliminary observations in O. katoi indicated that males were smaller than females, which is suggestive of sex change (protandry) in some symbiotic organisms. Thus, we first investigated the sexual system of O. katoi to determine if this shrimp was sequentially hermaphroditic. Morphological identification and size frequency distributions indicated that the population comprised males that, on average, were smaller than females. Gonad dissections demonstrated the absence of transitional individuals. Thus, O. katoi is a gonochoric species with reverse sexual dimorphism. The population distribution of O. katoi in its ascidian host did not differ significantly from a random distribution and shrimps inhabiting the same host individual as pairs were found with a frequency similar to that expected by chance alone. This is in contrast to that reported for other socially monogamous crustaceans in which pairs of heterosexual conspecifics are found in host individuals more frequently than expected by chance alone. Thus, the available information argues against monogamy in O. katoi. Furthermore, that a high frequency of solitary females were found brooding embryos and that the sex ratio was skewed toward females suggests that males might be roaming among hosts in search of receptive females in O. katoi. Symbiotic crustaceans can be used as a model system to understand the adaptive value of sexual and mating systems in marine invertebrates. PMID:25799577

  7. Euphorbia latex: a possible source of hydrocarbons and rubber

    Energy Technology Data Exchange (ETDEWEB)

    Viaud, P; Teisseire, D

    1975-01-01

    Illustrated descriptions are given of 36 plants of potential economic value in underdeveloped tropical countries, classified by use. The plants are either wild or cultivated on a fairly local scale. Accounts of limitations and special requirements and lists of references, research contacts and sources of germ plasm are included for each species. The following tree and shrub species are included: Cnidoscolus aconitifolius, C. chayamansa and hearts of several edible palm species including Euterpe edulis (vegetables); Durio species, Garcinia mangostana, Solanum quitoense, Bactris gaspiaes, Citrus grandis, Annona muricata and Pourouma cecropiaefolia (fruits); Orbignya martiana, Caryocar species, Jessenia polycarpa and Simmondsia chinensis (oil seeds); Acacia albida, Brosimum alicastrum, Cassia sturtii, Atriplex species and Prosopis tamarungo (forage (browse)); Mauritia flexuosa (fruit, wood, etc.); Euphorbia antisyphilitica (wax); and Parthenium argentatum (rubber).

  8. Additions to the lichens and lichenicolous fungi of Denmark 8

    DEFF Research Database (Denmark)

    Alstrup, Vagn; Søchting, Ulrik; Dragsholt, Claus

    2013-01-01

    Eiglera flavida and Epilichen scabrosus should be deleted from the Danish checklist. The collections of Caloplaca citrina are revised and most of them referred to C. flavocitrina. Amandinea pelidna, Arthonia peltigerae, A. phaeophysciae, Caloplaca britannica, C. polycarpa, Clauzadea metzleri, Cyp...

  9. 2530-IJBCS-Article-Alain S A Ambe

    African Journals Online (AJOL)

    hp

    2015 International Formulae Group. All rights ... Mots clés: Mode de préparation, Candida albicans, cytotoxicité, Cellules HFF ; Enantia polycarpa. ... marché et utilisées en thérapeutique ont perdu ...... Manque d'Accès aux Médicaments.

  10. Taxonomic status of Oenocarpus bataua (Euterpeae, Arecaceae inferred from plastid sequences

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    Rommel Montúfar

    2014-03-01

    Full Text Available With the aim of testing the evolutionary relationships between Oenocarpus bataua (formerly Jessenia bataua and other Oenocarpus species (Arecaceae, a phylogenetic study of tribe Euterpeae (Arecaceae was conducted using 3,6 kb of non-coding chloroplast DNA sequence data. The results of maximum parsimony analysis support the monophyly of Euterpeae and the inclusion of O. bataua within the Oenocarpus clade. Our results show substantial molecular divergence between O. bataua var. bataua and var. oligocarpus suggesting that, according to their original description, these two taxa may indeed represent different species. However, our phylogenies should be considered as tentative due to low statistical support.

  11. Caracterización de aeites de frutos de palmeras de la región amazónica del Brasil

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    Mambrin, M. C.

    1997-06-01

    Full Text Available The physicochemical characteristics, yield and fatty acid composition of pulp oils from bacaba (Oenocarpus distichus pataua (Jessenia batana and tucuma (Astrocaryum vulgare and kernel fats from tucuma and muru-muru (Astrocaryum murumuru, all obtained from palm tree fruits collected in the brazilian rain forest (Amazonia region, were determined. The pulp oils belong to the oleic group (> 57% oleic acid and the kernel fats to the lauric group (> 77% lauric acid.

    Se determinaron las características de los aceites de la pulpa de Bacaba (Oenocarpus distichus, Pataua (Jessenia batana y Tucumã (Astrocaryum vulgare y grasas de las nueces (coquitos de Tucumã y Muru-Muru (Astrocaryum murumuru, frutos de palmeras originarias de la región amazónica del Brasil. Rendimiento de aceite, características de su calidad y de composición fueron determinadas. Las pulpas producen aceites del grupo Oleico (≤57% ac. oleico y las nueces grasas del grupo Láurico (≥27% ac. láurico.

  12. Oligarchic forests of economic plants in amazonia: utilization and conservation of an important tropical resource.

    Science.gov (United States)

    Peters, C M; Balick, M J; Kahn, F; Anderson, A B

    1989-12-01

    Tropical forests dominated by only one or two tree species occupy tens of millions of hectares in Ammonia In many cases, the dominant species produce fruits, seeds, or oils of economic importance. Oligarchic (Gr. oligo = few, archic = dominated or ruled by) forests of six economic species, i. e., Euterpe oleracea, Grias peruviana, Jessenia bataua, Mauritia flexuosa, Myrciaria dubia, and Orbignya phalerata, were studied in Brazil and Peru Natural populations of these species contain from 100 to 3,000 conspecific adult trees/ha and produce up to 11.1 metric tons of fruit/hd/yr. These plant populations are utilized and occasionally managed, by rural inhabitants in the region. Periodic fruit harvests, if properly controlled have only a minimal impact on forest structure and function, yet can generate substantial economic returns Market-oriented extraction of the fruits produced by oligarchic forests appears to represent a promising alternative for reconciling the development and conservation of Amazonian forests.

  13. Assessment of impacts and evaluation of restoration methods on areas affected by a well blowout, Naval Petroleum Reserve No. 1, California

    Energy Technology Data Exchange (ETDEWEB)

    Warrick, G.D.; Kato, T.T.; Phillips, M.V. [and others

    1996-12-01

    In June 1994, an oil well on Naval Petroleum Reserve No. 1 blew-out and crude oil was deposited downwind. After the well was capped, information was collected to characterize the release and to assess effects to wildlife and plants. Oil residue was found up to 13.7 km from the well site, but deposition was relatively light and the oil quickly dried to form a thin crust on the soil surface. Elevated levels of hydrocarbons were found in livers collected from Heermann`s kangaroo rats (Dipodomys heermanni) from the oiled area but polycyclic aromatic hydrocarbons (known carcinogens or mutagens) were not detected in the livers. Restoration techniques (surface modification and bioremediation) and natural recovery were evaluated within three portions of the oiled area. Herbaceous cover and production, and survival and vigor of desert saltbush (Atriplex polycarpa) were also monitored within each trapping grid.

  14. Underexploited tropical plants with promising economic value

    Energy Technology Data Exchange (ETDEWEB)

    1975-01-01

    The apparent advantages of staple plants over the minor tropical plants often result only from the disproportionate research attention they have been given. A world-wide inquiry resulted in a list of 400 promising but neglected species. The 36 most important species are described in compact monographs and concern cereals (Echinochloa turnerana, grain amaranths, quinua and Zosterea mazina), roots and tubers (Arrachacha, cocoyams and taro), vegetables (chaya, hearts of palms, wax gourd, winged bean), fruits (durian, mangosteen, naranjilla, pejibaye, pummelo, soursop, uvilla), oilseeds (babassu palm, buffalo gourd, Caryocar species, Hessenia polycarpa and jojoba), forage (Acacia albida, Brosimum alicastrum Cassia sturtii, saltbushes and tamarugo) and other crops (buriti palm, Calathea lutea, candelilla, guar, guayule, Paspalum vaginatum, ramie and Spirulina).

  15. AMAZON RAINFOREST COSMETICS: CHEMICAL APPROACH FOR QUALITY CONTROL

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    Mariko Funasaki

    2016-02-01

    Full Text Available The market for natural cosmetics featuring ingredients derived from Amazon natural resources is growing worldwide. However, there is neither enough scientific basis nor quality control of these ingredients. This paper is an account of the chemical constituents and their biological activities of fourteen Amazonian species used in cosmetic industry, including açaí (Euterpe oleracea, andiroba (Carapa guianensis, bacuri (Platonia insignis, Brazil nut (Bertholletia excelsa, buriti (Mauritia vinifera or M. flexuosa, cumaru (Dipteryx odorata, cupuaçu (Theobroma grandiflorum, guarana (Paullinia cupana, mulateiro (Calycophyllum spruceanum, murumuru (Astrocaryum murumuru, patawa (Oenocarpus bataua or Jessenia bataua, pracaxi (Pentaclethra macroloba, rosewood (Aniba rosaeodora, and ucuuba (Virola sebifera. Based on the reviewed articles, we selected chemical markers for the quality control purpose and evaluated analytical methods. Even though chromatographic and spectroscopic methods are major analytical techniques in the studies of these species, molecular approaches will also be important as used in food and medicine traceability. Only a little phytochemical study is available about most of the Amazonian species and some species such as açaí and andiroba have many reports on chemical constituents, but studies on biological activities of isolated compounds and sampling with geographical variation are limited.

  16. Effects of gamma radiation on lichens and lichen-forming fungi and algae. Progress report, April 1, 1974--March 31, 1975

    International Nuclear Information System (INIS)

    Erbisch, F.H.

    1975-01-01

    Xanthoria polycarpa apothecia have been collected from Site 1 of the Enterprise Radiation Forest, fixed, sectioned, and stained for a study of ascus and ascospore development. The study will be completed later this year. Four years of data compiled on the effects of chronic gamma radiation on two species of Parmelia are now being analyzed and correlated. Up to this time most of the analysis has been with P. sulcata. Evidence from Cladonia sylvatica acute radiation studies indicated that radiation damage (macro- and microscopic and physiological) was not manifested until the lichens passed through a period suitable for growth. An experiment has been set up to determine if the growth period is responsible for the change observed. Irradiated (1000 krad) and non-irradiated podetia were placed in the field and others placed in a growth chamber. Those podetia in the growth chamber will not go through a growth period while those in the field will. Comparison of these podetia is going on monthly in regard to: photosynthesis- 14 CO 2 uptake, respiration, usnic acid concentrations, podetial strength, and cytological changes. Although several months data have been collected no conclusion can be drawn yet. (U.S.)

  17. Modiolarca lateralis (Pteryomorphia: Mytilidae: bivalve associated to six species of ascidians from Bocas del Toro, Panama

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    Juan I Cañete

    2013-11-01

    Full Text Available We describe the presence of the bivalve Modiolarca lateralis (Say, 1822 in six tropical ascidians Ascidia curvata, A. sydneiensis, A. panamensis, A. interrupta, Herdmania pallida and Polycarpa spongiabilis collected at depths of 1-3 m on coral reefs, mangrove roots and dock supports in Almirante Bay, Bocas del Toro, Panama (9°18'N, 82°13'W during June-July 2011. Bivalve prevalence varied between 9-30% across species, but was mainly associated with A. panamensis, P. spongiabilis and A. interrupta. Prevalence seems to be influenced by tunic thickness rather than by the ascidian size. Bivalves varied in size (0.6-11 mm shell length, with the smallest individual found in A. sydneiensis. There were only one or two bivalves per ascidians, although a maximum of 18 was found in one A. panamensis. M. lateralis seems to behave similarly to its temperate counterparts: it has a variety of hosts, occurs mainly in the anterior region of the ascidians, and has a variable abundance per host.

  18. Sitotoksisitas Invertebrata Laut sebagai Biomarker Lingkungan Di Kawasan Konservasi Perairan Pulau Banda

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    Asri Pratitis

    2017-05-01

    Full Text Available Penelitian di bidang ekologi menunjukkan bahwa wilayah terumbu karang yang terjaga denganbaik oleh konservasi menjadi tempat yang ideal bagi biota invertebrata untuk menghasilkansenyawa bioaktif farmakologis. Penelitian ini bertujuan memperoleh informasi mengenaisitotoksisitas dari spons, karang lunak dan ascidian yang berasal dari perairan Pulau Banda. Informasi sitotoksisitas invertebrata laut tersebut selanjutnya digunakan sebagai acuan dalammempelajari sistem konservasi yang telah dilakukan. Lima jenis invertebrata laut (Sarcophyton sp., Nephthea sp., Hyrtios sp., Stylissa sp., dan Polycarpa sp. diambil (lima ulangan acak di kawasan konservasi Pantai Wali, Desa Solomon, Pulau Banda. Penapisan sitotoksisitas dilakukan terhadap ekstrak etanol dari keseluruhan sampel. Hasil penapisan memperlihatkan bahwa  Stylissa sp. merupakan biota yang paling potensial karena ekstrak etanol dari  Stylissa sp. memiliki daya sitotoksisitas tertinggi dibandingkan jenis invertebrata yang diujikan lainnya. Namun demikian, sitotoksisitas biota-biota yang diperoleh dari perairan ini tergolong rendah.Perbandingan multidimensional scaling(MDS nilai sitotoksisitas antara sampel invertebratadari perairan Banda dan perairan lainnya menunjukkan bahwa karakteristik perairan Pulau Banda berada pada level baik dan rendah. Oleh karena itu, sistem konservasi harus dioptimasi lebihlanjut agar dapat menjaga keberlangsungan plasma nutfah di perairan Pulau Banda.

  19. Repetibilidade e número mínimo de medições para caracteres de cacho de bacabi (Oenocarpus mapora Repeatability and minimum number of measurements for characters of bacabi palm (Oenocarpus mapora racemes

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    Maria do Socorro Padilha de Oliveira

    2010-12-01

    Full Text Available A bacabi (Oenocarpus mapora H. Karsten é uma palmeira perene nativa da Amazônia, que produz cachos com centenas de frutos que apresentam grande potencialidade à agroindústria de polpa, mas tem sido pouco estudada. Os objetivos deste trabalho foram estimar os coeficientes de repetibilidade e determinar a previsibilidade e o número de medições necessárias para caracteres de cacho dessa palmeira. Foram avaliados 27 indivíduos de bacabi pertencentes ao Banco de Germoplasma de Oenocarpus/Jessenia da Embrapa Amazônia Oriental, em Belém-PA. De cada planta, foram colhidos três cachos em maturação completa para a mensuração de seis caracteres: peso total do cacho (PTC e de frutos por cacho (PFC, número de ráquilas por cacho (NRC, comprimento da ráquis por cacho (CRC, peso de 100 frutos (PCF e rendimento de frutos por cacho (RFC. As estimativas de repetibilidade foram obtidas pelos métodos estatísticos da análise de variância, componentes principais e análise estrutural. Em todos os caracteres, as estimativas de repetibilidade apresentaram valores muito semelhantes nos três métodos. As estimativas dos coeficientes de repetibilidade e as previsibilidades foram relativamente altas (r 0,60 e R² 81,7% para os caracteres número de ráquilas e rendimento de frutos por cacho, demonstrando regularidade dos genótipos nas várias medições (cachos, em todos os métodos. Para esses caracteres, o número mínimo de cachos necessários para a avaliação do real valor dos genótipos foi de treze (RFC e cinco (NRC cachos com confiabilidade de 95%, tornando-os factíveis no uso de inferências genéticas para as condições do estudo. Os demais caracteres exibiram repetibilidades e coeficientes de determinação de médias a baixas magnitudes, indicando necessidade de maior controle ambiental para suas mensurações.Bacabi (Oenocarpus mapora H. Karsten is a native Amazonian palm that produces racemes with hundreds of fruits with great

  20. Repetibilidade e número mínimo de medições para caracteres de cacho de bacabi (Oenocarpus mapora

    Directory of Open Access Journals (Sweden)

    Maria do Socorro Padilha de Oliveira

    2010-12-01

    Full Text Available A bacabi (Oenocarpus mapora H. Karsten é uma palmeira perene nativa da Amazônia, que produz cachos com centenas de frutos que apresentam grande potencialidade à agroindústria de polpa, mas tem sido pouco estudada. Os objetivos deste trabalho foram estimar os coeficientes de repetibilidade e determinar a previsibilidade e o número de medições necessárias para caracteres de cacho dessa palmeira. Foram avaliados 27 indivíduos de bacabi pertencentes ao Banco de Germoplasma de Oenocarpus/Jessenia da Embrapa Amazônia Oriental, em Belém-PA. De cada planta, foram colhidos três cachos em maturação completa para a mensuração de seis caracteres: peso total do cacho (PTC e de frutos por cacho (PFC, número de ráquilas por cacho (NRC, comprimento da ráquis por cacho (CRC, peso de 100 frutos (PCF e rendimento de frutos por cacho (RFC. As estimativas de repetibilidade foram obtidas pelos métodos estatísticos da análise de variância, componentes principais e análise estrutural. Em todos os caracteres, as estimativas de repetibilidade apresentaram valores muito semelhantes nos três métodos. As estimativas dos coeficientes de repetibilidade e as previsibilidades foram relativamente altas (r 0,60 e R² 81,7% para os caracteres número de ráquilas e rendimento de frutos por cacho, demonstrando regularidade dos genótipos nas várias medições (cachos, em todos os métodos. Para esses caracteres, o número mínimo de cachos necessários para a avaliação do real valor dos genótipos foi de treze (RFC e cinco (NRC cachos com confiabilidade de 95%, tornando-os factíveis no uso de inferências genéticas para as condições do estudo. Os demais caracteres exibiram repetibilidades e coeficientes de determinação de médias a baixas magnitudes, indicando necessidade de maior controle ambiental para suas mensurações.

  1. DOE Chair of Excellence in Environmental Disciplines-Final Technical Report

    Energy Technology Data Exchange (ETDEWEB)

    Kurunganty, Sastry; Loran, Roberto; Roque-Malherbe, Rolando; Hijazi, Yazan; Nieto, Santander; Gomez, Will A.; Duconge, Jose; Cotto, María del C.; Muniz, Carlos; Diaz, Francisco J.; Neira, Carlos F.; Marquez, Francisco; Del Valle, W.; Thommes, M.

    2014-02-19

    Characterization of low Refractive Index Aerogel Silica for Cherenkov Counters- Dr. Rolando Roque-Malherbe Sub-project PI, Dr. Jose Duconge Sub-project Co-PI, Dr. Santander Nieto Assistant Researcher, Francisco Diaz and Carlos Neira Associate Researchers. The initial aim of this sub-project was changed to the synthesis and characterization of extremely high specific surface area aerogel silica for gas storage. A high specific surface area silica gel that has applications in gas drying, cleaning operation useful in nuclear industry in process was developed. Sub-Project 2: Investigation Study of Magnetic and Electronic Transport Properties at Material Interfaces in Magnetic Multilayer Heterostructure using Gd. – Dr. Yazan Hijazi, Sub-project Co-PI. UT developed the capability and infrastructure to produce high quality thin-film magnetic films and magnetic multilayer structures with fine control over film quality and thickness using sputter deposition capability to perform in-house electric and magnetic characterization of these films. The research experimentally quantified the effect of Gd incorporation within the magnetic multilayer structure and produce magnetic media with exchanged decoupled multilevel magnetic anisotropy. From September 2006 to September 2011 the Massie Chair produced nineteen (19) publications, (including 3 books), five (5) presentations and three (3) international conferences abstracts. A total of fourteen (14) undergraduates and (6) graduate students acquired research experience. Two Ph.D. students presented their dissertations on topics related to nuclear energy and graduated as follows: María Cotto (May 2009) and Eric Calderón (May 2011). Five of the participating undergraduate students graduated: Ramon Polanco (BSME, May 2009), Jason Pérez (BSEE, May 2008), Rafael Colón (BSME, May 2008), Jessenia Marfisi (BS Chemistry, May 2008). Eleven (11) students were sent to National Laboratories (LANL, SNL and LLNL), NNSA and DoE facilities for summer