摘要
利用杂种优势的子一代是由母本提供细胞质、核和父本提供细胞核共同组成的杂合体。大量研究资料已证实,作物性状主要是由核基因控制的,但某些试验结果也说明细胞质具有一定影响。Mann等发现烟草雄性不育(megalosiphon)胞质对杂种生长的抑制,足以抵消烟草品种间杂交的杂种优势。木原均将4种细胞质和7个普通小麦核置换看出细胞质对育性、熟期、株高等有影响。
13 male-sterile lines of heterocytoplasm-homokaryon and their maintainer lines were mated to 2 restorer lines,preliminary result showed that most of the Fgeneration of sterile cytoplasm had positive correlation on spikelet per plant and total grains per spikelet,negative correlation on setting percentage and weight of 1,000-grains,and no relation on plant height,growth duration and resistance to rice blast and bacterial blight with the Fof their corresponding maintainers.The comparison of the Fof sterile cytoplasm in some of the wild rice aborted pollen(WA)and Chinsurah BoroⅡ,which have been widely used,in China’s rice production,to the Fof their maintainers showed an insignificant difference in the following principal traits:grain yield per plant,spikelet per plant,total grains per spikelet,filled grains per spikelet,fertility,weight of 1,000-grain,plant height,growth duration and resistance to rice blast and bacterial blight.The effects of sterile cytoplasm on the Fincluded not only those on the sterility and cytoplasm,but also those on the combination of karyons concerned.The best cytoplasm for production must be selected from the correct combinations by a series of trials so that the influence of sterility on the Fgeneration can be avoided.
出处
《中国农业科学》
1982年第4期7-12,共6页
Scientia Agricultura Sinica
