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- W2788793609 abstract "espanolLa precocidad ha sido un rasgo largamente buscado tanto por los fisiologos como por los mejoradores de cultivos que tratan de eludir las sequias. En India es obviamente necesario contar con variedades tempranas de soja, en particular cuando se verifica una interrupcion de los monzones y el cultivo tiene que completar su ciclo con la humedad disponible. Ademas en el sistema de cultivo de la meseta Malwan, donde los agricultores cultivan en rotacion soja, papas y trigo, se necesitan variedades de corta duracion ( EnglishEarliness has been a trait long sought by both crop physiologists and breeders for drought avoidance. In India, there is an obvious need for early varieties of soybean, particular! y when there is a break in the monsoon and the crop has to complete its cycle on the available moisture. Further, in the cropping system of Malwan platea u, where farmers grow a soybean-potato-wheat rotation, there is demand for short-duration varieties ( 87 accessions were evaluated for plant height, branch number, pods per plant, 100-seed weight, days toflowering, days to maturity, reproductive period and seed yield per plant. All the genotypes showed significant variability, indicating considerable diversity. Based on the D2 Mahalanobis' clustering, these 87 genotypes could be grouped into eight clusters. The germplasm accessions selected from this stud y could be used as parental material in a soybean breeding programme for earliness. Key words: soybean, divergence, early, Mahalanobis's 0 2 statistic, germplasm, core collection francaisLa precocite est une caracteristique recherchee depuis longtemps a la fois par les physiologistes des plantes et les selectionneurs, pour eviter la periode seche. En Inde, il existe un besoin manifeste de disposer de varietes precoces de soja, notamment quand il y a une interruption de la mousson et que la plante doit terminer son cycle en utilisant 1' ea u disponible. En outre, les pratiques agricoles sur le platea u de Malwan, ou les paysans appliquent une rotation soja-pomme de terre- ble, font que les varietes a maturation rapide ( L'absence de varietes appropriees dans ce groupe precoce (>,a encourage une etude du materiel genetique disponible au Centre national de recherche sur le soja, a Indo re, en vue d u criblage de varietes precoces. 87 accessions ont ete evaluees en ce qui concerne la hauteur de la plante, le nombre de ramifications, les gousses par plante, le poids pour l00 graines, le nombre de jours avant la floraison, le nombre de jours pour arriver a maturite, la periode reproductive et le rendement en graines par plante. Tous les genotypes presentent une variabilite significative, indiquant une diversite considerable. L' analyse des distances D2 de Mahalanobis indique que ces 87 genotypes peuvent etre reunis en huit groupes. Les accessions de materiel genetique selectionnees dans cette etude peuvent etre utilisees comme materiel parental dans un programme de selection de varietes precoces." @default.
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- W2788793609 date "2007-01-01" @default.
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- W2788793609 title "Divergence studies in early-maturing soybean (Glycine max (L.) Merrill) germplasm accessions in India" @default.
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