Increasing rapeseed yields through heterosis breeding
The present investigation was under taken to study the magnitude of heterobeltiosis and economic heterosis for seed yield and its attributes by using line (9)×tester (5) mating design. The analysis of variance revealed considerable genetic variation among the genotypes. The degree of heterosis varied from cross to cross for all the traits. The magnitude of standard heterosis was high for seed yield per plant (60.2％), number of effective branches per plant (110.7％) and siliquae per plant (322.1％), whereas,low to medium heterosis was observed for remaining traits. Likewise, high heterobeltiosis (97.2％) was recorded by the hybrid MYSL 20/YP×PS 66. This hybrid was heterotic over GS 1 for most of various yield components also. The cross combinations YSC 99×RAUDYS 9708 (60.2％), MYSL 221×PS 66 (27.9％) and SSK 9215×RAUDYS 9708 (27.1％) exhibited high significant heterosis over the best commercial check variety GS1 for seed yield per plant. These hybrids had high heterosis in desired direction for other yield attributing traits.
Heterobeltiosis economic heterosis rapeseed Brassica campestris
C.H.Prajapati K.M.Patel M.P.Patel H.C.Pathak
Main Castor & Mustard Research Station, S.D.Agricultural University Sardarkrushinagar 385 506 (Gujarat), India
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
58-60
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）