【摘要】 对多穗小麦新种质 86 1幼穗分化及遗传特性分析表明 ,86 1与普通小穗小麦 (绵阳 11号和矮孟牛 )相比 ,具有小穗分化持续期长和小穗分化速率高这两个显著不同的特性 ,其中 ,小穗分化持续期长的特性能在与普通小穗小麦杂种F1 中很好表达 ,而小穗分化速率高的特性不能在杂种F1 中表达。 86 1小穗分化的两个优良特性能在F2代中遗传重组 ,出现早熟多小穗类型优良单株 ,分析结果为进一步研究改良 86 1,开展多小穗类型超高产育种提供了理论依据。更多还原

【Abstract】 Comparison analysis for a multispikelet wheat line 86 1,two normal spikelet lines Mianyang 11 and Aimoliu,and the F1 hybrids between 10 A and these two normal spikelet wheat lines were carried out The results showed as follows:compared with normal spikelet wheat lines,86 1 had 2 special properties,longer ear initiation duration and higher ear initiation rate The property of long ear initiation duration of 86 1 could express in F1 and showed very strong heterosis while high ear initiation rate property could not be observed in hybrids F1更多还原