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Variabilidad en caracteres morfológicos relacionados con la implantación de Desmanthus virgatus (L.) Willd. y Desmanthus paspalaceus (Lindm.) Burkart Variability in morphological traits related with the establishment of Desmanthus virgatus (L.) Willd y Desmanthus paspalaceus (Lindm.) Burkart  [cached]
J.M. Zabala,J. Giavedoni,P.A. Tomas,E.A. Budini
Agriscientia , 2010,
Abstract: En la actualidad, una prioridad para mejorar la producción ganadera en el centro-norte de Argentina es la búsqueda de leguminosas forrajeras adaptadas a la región.Este trabajo tuvo como objetivos: a) analizar la variabilidad de caracteres morfológicos relacionados con el crecimiento inicial en poblaciones de dos especies de forrajeras nativas, Desmanthus virgatus y D. paspalaceus, y b) evaluar la implantación a campo en dos ambientes. Se encontró variación en los caracteres relacionados con el crecimiento inicial en ambas especies se identificaron poblaciones promisorias para incorporar en programas de mejoramiento. Una parte importante de la variación encontrada corresponde a variaciones interpoblacionales e intrapoblacionales. Las correlaciones entre caracteres indican que es posible mejorar simultáneamente por producción de biomasa aérea sin comprometer la acumulación de reservas en la raíz. Todas las poblaciones mostraron un bajo establecimiento a campo en los dos ambientes analizados. Se discuten las causas probables de dicho comportamiento. The search for forage legumes to improve animal production is a priority in the centre-north of Argentina. This study aims to determine the variability for morphological traits related with the early vegetative growth in populations of two native forage legumes, Desmanthus virgatus y D. paspalaceus and analyze their field establishment in two environments. Variation was found in all of the traits analyzed and useful populations were identified with a view to their incorporation into breeding programs. Big fractions of the total phenotypic variation for almost all traits was due to interpopulational and intrapopulational variation. Correlations among characters indicate that a simultaneous improvement is possible by means of aerial biomass without compromising reserve accumulation in roots. All populations had low field establishment rate on the two locations used. The causes of this problem are discussed in this paper.
Variabilidad en caracteres morfológicos relacionados con la implantación de Desmanthus virgatus (L.) Willd. y Desmanthus paspalaceus (Lindm.) Burkart
Zabala,J.M.; Giavedoni,J.; Tomas,P.A.; Budini,E.A.;
Agriscientia , 2010,
Abstract: the search for forage legumes to improve animal production is a priority in the centre-north of argentina. this study aims to determine the variability for morphological traits related with the early vegetative growth in populations of two native forage legumes, desmanthus virgatus y d. paspalaceus and analyze their field establishment in two environments. variation was found in all of the traits analyzed and useful populations were identified with a view to their incorporation into breeding programs. big fractions of the total phenotypic variation for almost all traits was due to interpopulational and intrapopulational variation. correlations among characters indicate that a simultaneous improvement is possible by means of aerial biomass without compromising reserve accumulation in roots. all populations had low field establishment rate on the two locations used. the causes of this problem are discussed in this paper.
Rendimiento y composición química del forraje de Huizachillo (Desmanthus virgatus L. var. depressus Willd) bajo condiciones de cultivo  [cached]
Francisco Zamora Natera,Maurilio Martu00EDnez Rodru00EDguez,Mario Ruiz Lu00F3pez,Pedro Garcu00EDa Lu00F3pez
Revista fitotecnia mexicana , 2002,
Abstract: La explotación de bovinos y caprinos es una actividad económica importante en las zonas áridas del estado de Nuevo León, México. Sin embargo, está limitada por la baja producción de forraje debido a las condiciones ambientales adversas en estas regiones. Una alternativa potencial es incorporar al cultivo especies nativas con valor forrajero. Se realizó un experimento en Marín, Nuevo León, durante 1995, con el objetivo de evaluar la producción de forraje de la leguminosa Desmanthus virgatus L. var. depressus Willd, a diferentes densidades de población y cortes periódicos. Asimismo, se estudió el efecto de la densidad de población en la composición química del forraje. Se utilizó un dise o experimental completamente al azar con arreglo factorial 4 x 4 con cuatro repeticiones. Se evaluaron cuatro densidades de población (3, 4, 6 y 8 plantas/m2) y el forraje producido en cuatro cortes consecutivos. En cada corte se cuantificó el rendimiento de materia seca. Al forraje obtenido del tercer corte se le realizó un análisis químico proximal y se determinó el contenido de calcio y fósforo. La interacción cortes con densidad de población fue significativa, ya que el rendimiento de forraje seco en el primero y cuarto cortes aumentó proporcionalmente con la densidad de población (P ≤ 0.05). Sin embargo, en el segundo y tercer cortes el rendimiento fue mayor sólo con la densidad de 6 plantas/m2. Los mayores rendimientos acumulados de los cortes se obtuvieron con densidades de 6 y 8 plantas/m2. La composición química del forraje del tercer corte fue similar en todas las densidades de población estudiadas.
Gamma Radiation Effects on some Growth Patterns in Hedge Lucerne (Desmanthus virgatus L.)
Ameena Premnath, A. Kalamani, C.Babu and G. VijayaKumar
Electronic Journal of Plant Breeding , 2010,
Abstract: Seeds of Hedge lucerne (Desmanthus virgatus) were exposed to different doses (50 to 500 Gys, with an interval of 50 Gys)of gamma rays (Cobalt-60) to determine the effectiveness of different doses on growth behaviour and biomasscharacteristics. The lethal dose (LD50) was found to be 250 Gys. About thirty five mutants were identified. High biomassyielding dwarf statured plants were identified from the treatments of 350 and 500 Gys irradiation. Similarly high fodderyielding superior plants as a result of increased number of branches ranging from 22-34 were observed in 400 and 450 Gyspopulation when compared to the control (12-16 branches). Plants of bushy stature with shorter intenodal length (2.25 cm)when compared to control (3.75 cm) were found among the 450 Gys population. Prostrate types were also identified amongthe 50, 350, 400 and 500 Gys population suited for grazing pastures. Based on single plant performance, plants which recordhigh biomass will be identified and M1 seeds will be collected and studied in further generations.
Caracteriza??o dos taninos condensados das espécies mani?oba (Manihot pseudoglazovii), flor-de-seda (Calotropis procera), feij?o-bravo (Capparis flexuosa, L) e jureminha (Desmanthus virgatus)
Cruz, S.E.S.B.S.;Beelen, P.M.G.;Silva, D.S.;Pereira, W.E.;Beelen, R.;Beltr?o, F.S.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2007, DOI: 10.1590/S0102-09352007000400033
Abstract: condensed tannins (ct) of the species mani?oba (manihot pseudoglaziovii), flor-de-seda (calotropis procera), feij?o-bravo (capparis flexuosa) and jureminha (desmanthus virgatus) were characterized and the chemical composition and in vitro dry matter digestibility (ivdmd) of those species were determined. concentration of soluble tannin (st), bound tannin (bt) and total tannin (tt) of the plants was determined using butanol-hcl method; astringency was determined, using radial diffusion method, and the ivdmd was determined using two-stages method. concentration and astringency of condensed tannins varied between species (p<0.01). jureminha was the species that presented the highest value (2.4% tt and 13.7-3 astringency). no tannins were detected in flor-de-seda. crude protein was higher than 16% in all studied species, and the adf and lignin values were lower than 39 and 15%, respectively. the ivdmd was low in jureminha (43%) and high in flor-de-seda (80%). the correlation between ivdmd and tt was low (r2=0.097).
Substrate for tests of seedlings emergency and seed vigor of Erythrina velutina Willd., Fabaceae/ Substratos para testes de emergência de plantulas e vigor de sementes de Erythrina velutina Willd., Fabaceae  [cached]
Edna Ursulino Alves,Leonaldo Alves de Andrade,Heloisa Helena de Araújo Barros,Edilma Pereira Gon?alves
Semina : Ciências Agrárias , 2008,
Abstract: This research work had as objective to evaluate the effect of different substrates on emergence and seedlings development of Erythrina velutina Willd. The experiment was carried out at the greenhouse of the Laboratory of Vegetable Ecology in the Center of Agrarian Sciences - Federal University of Paraíba. The substrates evaluated were washed sand; washed sand + vermiculite in the proportions of 1:1, 3:1 and 1:3; vegetable earth, vegetable earth + washed sand in the proportions of 1:1, 3:1 and 1:3, vegetable earth + vermiculite in the proportions of 1:1, 3:1 and 1:3, vermiculite, bioclone , bioplant and plugmix . The experimental design was completely randomized with fifteen treatments (substrates) and four replications of 25 seeds. The effect was evaluated through percent of emergence, first count, emergence velocity index, medium time and relative frequency of emergency, length and dry mass of the root and it leaves aerial of the seedling. The substrates sand and vermiculite had the best results and are recommended for conduction of tests of emergency of mulungu seedlings. Com o objetivo de avaliar a influência de diferentes substratos na emergência e desenvolvimento de plantulas de Erythrina velutina Willd. foi conduzido um experimento em casa de vegeta o pertencente ao Laboratório de Ecologia Vegetal do Centro de Ciências Agrárias da Universidade Federal da Paraíba. Foram comparados os substratos areia lavada; areia lavada + vermiculita na propor o de 1:1, 3:1 e 1:3; terra vegetal, terra vegetal + areia lavada na propor o de 1:1, 3:1 e 1:3, terra vegetal + vermiculita na propor o de 1:1, 3:1 e 1:3, vermiculita, bioclone , bioplant e plugmix . O delineamento utilizado foi o inteiramente casualizado com 15 tratamentos (substratos) e quatro repeti es de 25 sementes. Foram avaliados os seguintes parametros: porcentagem de emergência, primeira contagem, índice de velocidade, tempo médio e frequência relativa de emergência, comprimento e massa seca da raiz e parte aérea das plantulas. Constatou-se que os substratos areia e vermiculita foram responsáveis pelos melhores desempenhos, sendo recomendados para condu o de testes de emergência de plantulas de mulungu.
Aclimatacion de Uncaria tomentosa (Willd.) Dc. Producida in vitro  [cached]
Gilberto Domínguez Torrejón,María Luz Donayre Gómez
Ecología Aplicada , 2006,
Abstract: Ensayos previos de aclimatación de vitroplantas de Uncaria tomentosa (Willd.) DC, (U a de gato), determinaron la susceptibilidad de la especie a adaptarse a condiciones de ambiente natural. Se seleccionó un clon con la mayor tasa de multiplicación in vitro, para su evaluación en la fase de aclimatación y se le sometió a mediciones de supervivencia, crecimiento en altura y vigorosidad expresado en número de hojas desarrolladas en esta fase. Los resultados ha permitido obtener el 100 % de supervivencia, con tama os de vitroplantas entre 17.07 cm y 19.53 cm en el periodo de pre aclimatación y con una vigorosidad entre 7 y 14 hojas aproximadamente; características que no han tenido ninguna incidencia en la mortandad. Desarrollo posterior en diferentes substratos, no mostró diferencias significativas en el tama o de las plantas (20.8-24.8 cm), por lo que se las considera como de tama o homogéneo; a pesar de haberse notado un ligero efecto de menor incremento en uno de los substratos. La vigorosidad final de las vitroplantas expresada en número de hojas tampoco mostró diferencias significativas por efecto de los substratos, por lo que se las considera como plantas de vigor homogéneo para ser destinadas al campo.
KOLESOM (Talinum triangulare Willd.) TUMBUHAN BERKHASIAT AFRODISIAKA YANG AMAN  [cached]
Yun Astuti Nugroho,Budi Nuratmi,M. Wien Winarno
Bulletin of Health Research , 2012,
Abstract: KOLESOM (Talinum triangulare Willd.) TUMBUHAN BERKHASIAT AFRODISIAKA YANG AMAN
GALIUM RUTHENICUM WILLD. IN FLORA OF ROMANIA  [PDF]
CIOC?RLAN VASILE
Journal of Plant Development , 2011,
Abstract: A newly identified species in the vascular flora of Romania, namely Galium ruthenicum Willd. is published now. This taxa has been identified in Tulcea county, Dobrudja province. It is grown on sunny, rocky places.It is also mentioned the differences against Galium verum L., a morphologically close taxa in flora of Romania.
Germina??o de sementes e crescimento de plantas de Diplusodon virgatus Pohl, Lythraceae
Cesarino, Fabiano;Araujo, José Eduardo de;Zaidan, Lilian B.P;
Acta Botanica Brasilica , 1998, DOI: 10.1590/S0102-33061998000400003
Abstract: seeds of d. virgatus are present in the cerrado soil seed bank. the aim of this study was to verify whether this species could be used in recuperation programs of the cerrado areas. the germination of seeds was studied in light and darkness at 15, 20, 25, 30 and 35oc. seeds were stored at 4oc, and buried in cerrado and forest soils for up to 12 months, with germination being tested. plants were cultivated in cerrado and forest soils in 8, 12, 16 and 20h photoperiods. seeds are positively photoblastic and remain viable for at least 12 months the best temperature for germination being 25oc. in general, plants grew better during longer photoperiods. flowering was observed only in plants growing in the cerrado soil, and at 12h, and 16h photoperiods. considering the plants grow fast and that the seeds remain viable in the soil for a long period, we can recommend the use of the species for revegetation purposes in the cerrado.
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