摘要： 1986—1988年对四个杂交粳稻组合F1 和F2 的产量及其主要经济性状进行了研究,结果表明:四个组合的F2 和F1 在产量及主要经济性状上的表现基本一致,F2,不产生育性分离,株高和抽穗期分离不大,基本上是整齐的,充分说明这几个组合的F2 是可以利用的.还阐明了利用F2 组合应具备的几种条件以及应采取的栽培措施.
关键词:
杂交粳稻,
杂种二代
Abstract: The yield and main economic characters of F1 and F2 of 4 combinations of keng rice hybrid were investigated in 1986-1988. The results indicated that the yields and main economic characters of F1 and F2 were close, fertility segregation did not occur in the hybrid F2, and the segregation of its plant height and heading stage were negligible. That showed that the hybrid F2 of these 4 combinations was utilizable. However the employed combination of hybrid F2 was conditioned by: (l) The male sterile line employed must be gametophytic sterility;(2) The combination is possessed of strong heterosis;(3) The plant height and heading stage of the parents should be same or close;(4) The suitable cultivation techniques should be adopted, such as to add transplanting density and to give more effective management in the tillering stage, for increasing the panicles per unit area.
Key words:
Keng hybrid rice,
F2 hybrid
孟祥祯, 冯瑞光, 王玉珍. 关于杂交粳稻二代(F2 )利用的探讨[J]. 华北农学报, 1989, 4(S1): 1-7. doi: 10.3321/j.issn:1000-7091.1989.z1.001.
Meng Xiangzhen, Feng Ruiguang, Wang Yuzhen. Research on Utilization of Keng Rice (F2 ) Hybrid[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1989, 4(S1): 1-7. doi: 10.3321/j.issn:1000-7091.1989.z1.001.