热研7号柱花草的选育

Selection of Stylosanthes guianensis cv.Reyan No.7

进行了热研7号柱花草品种比较试验、区域试验和生产性试验的选育研究。研究结果表明:该品种具有高产、优质、抗病、耐寒、晚熟的特点。年平均干草产量14879.3kg·hm-2,年平均种子产量424.0kg·hm-2 ,分别比格拉姆柱花草增产84.0%、116.4%,与热研2号柱花草差异不显著。粗蛋白含量16.86%,粗脂肪含量2.65%,生育期为239d。可用于青饲料、干草粉生产等。适合我国热带、南亚热带地区种植。

Stylosanthes guianensis cv.Reyan No.7was selected from the collection of CIAT136introduced from CIAT in1982.The variety comparison trial from1985to1986,the regional trial from1987to1989and the pro duction trial from1991to2001showed that this variety produced high dry matter yield and had superior quality with anthracnose resistance,cold tolerance and late maturity.The S.guianensis cv.Reyan No.7produced14879.3kg/hm 2 of annual average dry matter yield and424.0kg/hm 2 ,84.0%and116.4%higher than those of S.guianensis cv.Graham(control)respectively.But there were no significant differences when compared to S.guianenesis cv.Reyan No.2.The crude protein content and the crude fat content of the S.guianersis cv.No.7were16.86%and2.65%respectively.Its growth period was239days.This new variety is suitable for green forage and hay meal production.And it adapts to grow in tropical and subtropical regions of China.