1 超级稻的几种选育途径1.1 利用亚种间的杂种优势选育出超高产组合。以培矮64S为重点,进行广泛地测交筛选,从中选出超高产组合。1.2 利用野生稻的有利基因选育超高产组合。采用分子标记技术结合田间实验,在野生稻中发现两个重要的QTL基因位点,每一基因位点具有比日产潜力80kg/hm~2高产杂交稻威优64增产18%左右的效应。 A few super rice breeding methods 1.1 The use of heterosis between the breeding of super-high yield combinations. With Pei’ai 64S as the focus, a wide range of screening and screening was conducted, and the super high yielding combination was selected. 1.2 use of the favorable gene of wild rice Breeding super high-yield combinations. Two important QTL loci were found in wild rice using molecular markers combined with field experiments. Each locus had an effect of increasing yield by about 18% compared with the high yielding hybrid rice Weieu 64 with a daily yield of 80kg / hm ~ 2.