摘要
12个税型两系杂交稻组合在5个播期条件下的播始天数、株高、单株草重、谷草比、单株有效稳、每穗着粒数、实粒数、结实率、千粒重及单株粒重等10个性状进行相关及通径分析，结果表明，不仅结实率及谷草比与单株粒重的相关系数（正相关）较大，而且这2个险状对单株粒重的直接通径系数（为正值）也较大，说明现阶段提高结实率及谷草比是选育强优势税型两系杂交稻的主攻方向。对提高结实率的途径也进行了讨论。
Data of the main agronomic traits at five different growth phases of twelve hybrid rice varletles were analyzed with correlation and path analysls. The results showed that main trends of enhancing the yield of two-linehybrid were to improve both seed setting rate and grain/straw rate.
出处
《绵阳经济技术高等专科学校学报》
1997年第3期1-4,7,共5页
Journal of Mianyang College of Economy & Technology
基金
四川省"九五"水稻育种攻关课题
关键词
籼型
杂交稻
结实率
育种
产量
水稻
Rice
two-line hybrid
seed setting rate
breeding system
