摘要
本文分析四川1988—1995年参加省区试的杂交水稻新组合状况及发展趋势。1.“八·五”期间四川杂交水稻选育的新组合多,增产幅度大;2.不育系选育应以高配合力和易于制种、繁种为主攻方向;3.恢复系选育应具多样化,形成具有一定特色的恢复系群。在组合选配时,应根据不同不育系的特点确立选配方案,筛选最佳组合;4.四川杂交水稻高产育种方向是:控制生育期在15O天内,保持株高105～115cm,提高每穗实粒数,增加日产量。
Status and trend in the breeding of hybrid rice( O. stativa L. ) new combinations in Sichuan was analyzed based on the data of the regional yield trials on hybrid rice from 1988 to 1995- Results revealed that: A lot of new hybrid rice combina tions with higher yield were developed in 1991-1995. 2. The primary aim of breeding male sterile lines is to breed CMS lines with high combining ability and high yield of seed production and multiplication 3- Diverse restorers with excellent perfor mance.high resistance,fine grain quality, earliness etc. should be selected.so to combine desirable combinations. 4. Major breeding targets for hybrid rice in Sichuan include:to limit the growth duration within 150 days, the plant height ranged between 105 and 115cm, and to increase filled grains/panicle and daily yield.
出处
《西南农业学报》
CSCD
1996年第S1期31-35,共5页
Southwest China Journal of Agricultural Sciences
关键词
杂交水稻
区试组合
不育系
恢复系
育种方向
Hybrid rice Regional yield trial Combination Male sterile line Restorer Breeding direction.
