论文部分内容阅读
1066A×C445是利用矮秆高度雄性不育系育成的我国第一个夏谷杂交种,籽粒产量表现了较强的杂种优势,在省区试中较对照种平均增产16％以上。研究发现1066A×C445较对照品种在单茎叶面积、灌浆期光合作用强度,亩成穗率、穗粒重、经济系数等方面存在优势。这是杂交种形成籽粒产量优势的基础。
1066A × C445 is the first summer hybrid of China that was bred from a dwarfed male sterility line. The yield of grain showed a strong heterosis, which increased by more than 16% on average in the provincial test. The results showed that 1066A × C445 was superior to the control varieties in single leaf area, photosynthesis intensity at grain filling stage, spike rate per acre, grain weight per spike, economic coefficient and so on. This is the basis for hybrids to yield grain yield advantages.