选用27个两系杂交稻组合及其父本,研究了各杂交组合F1及其父本的籼粳特性与F1部分性状之间的关系。结果表明：选择分蘖力强,植株高大,结实率好的父本,可配制出强优势杂交组合。两系杂交水稻F1的株高、秆高和剑叶叶长优势与程式指数呈显著负相关。两系杂交水稻F1穗长与父本叶毛密度和稃毛密度呈显著负相关,穗粒数与父本穗节长和千粒重与父本稃毛密度呈显著负相关。%Relations between character of Indica and Japonica rice and characters of F1 were studied by 27 two-line hybrid rices and its male parent. The results indicated that strong heterosis combination can be breeded by selecting male parent with strong tillering ability, taller plants and high kernel setting rate. There was a significant negative correlation among plant height, culms height, flag leaf length and program index at two-line hybrid rice. There was a significant negative correlation among panicle length of F1, density of leaf indumentum and lemma indumentum of male parent. There was a significant negative correlation between number of grains per ear and length of ear stem of male parent. There was a significant negative correlation between 1000-grain weight and lemma indumentum of male parent.
展开▼
