Relationship among seed parameters and flowering cycles on three gamba grass (Andropogon gayanus Kunth) segregating populations

摘要：

A ndropogon gayanus sp.is a tropical forage grass species often used in Brazilian pastures whenever drought stress is the most limiting factor (Buldgen et al., 1995 ; Garcia et al,.1998 ).Being a cross‐pollinated species, there are several cultivars and ecotypes available, which show a remarkable range of variation as to morpho‐agronomic, seed and forage traits.However, early flowering is usually present in most of the genetic materials cited ( Parihar and Tomer, 2001), which causes fast and significant loss of forage quality in cultivated pastures.The main purpose of this research work has been to develop new populations with intermediate and late flowering cycles and correlate these characters with chosen phenologycal and seed traits.In case of success, the recurrent selection scheme used would became easier and cheaper.

关键词： gamba grass seed parameters flowering cycles plant breeding

作者: R.Usberti J.A.Usberti Jr. P.B.Alcantara V.B.G.Alcantara W.T.M attos R.Possenti L.Gerdes M.A.C.Lucena A.T.Tsuhako

作者单位: Plant Protection Agency,Campinas.Brazil,P.O.Box 960,CEP 13073-001. Agronomic Institute,Campinas,Brazil Zootechnic Institute,Nova Odessa,Brazil Matsuda Seeds and AnimalNutrition Co.,Alvares Machado,Brazil.

会议类型: 国际会议

会议名称: 2008世界草地与草原大会

会议地点: 呼和浩特

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）