水稻杂交亲本的选配,关系着F_1优势的大小与能否选出理想的后代.为了从F_1优势中摸索其遗传规律,以作后代选择的参考,作了水稻F_1几个主要产量性状的分析.一、材料与方法用常规育种18个组合的F_1及亲本共54个材料.每个材料选择典型植株10株,调查性状有株高、单株穗数、穗粒重、千粒重和 The matching of rice hybrid parents is related to the size of F_1 and the ability to select the ideal offspring.In order to explore its genetic law from the F_1 advantage and make it a reference for future generations, several major yield traits of F_1 were analyzed. Ⅰ.Materials and Methods F_1 and 18 parents were used to breed a total of 54 materials.Each material was selected from 10 typical plants and the characters of investigation were plant height, spike number per plant, spike weight per spike,