【摘要】 <正> 我国推广高粱杂交种已有廿余年的历史。现在剖析一下主要杂交种及其亲本的系谱,对确定今后选育的策略及方法不无裨益。我们依据《杂交高粱—选育—制种—栽培》和《优良杂交高粱组合及亲本》两书中提供的和近期可能收集到的资料,分析中国主要高粱杂交种及其亲本的系谱,并讨论有关的遗传基础宽度问题。更多还原

【Abstract】 Most of the hybrid sorghums in China were produced by using exoticorigined A-lines as female parents and local origined R-lines as maleparents.The A-lines included mainly T_X3197A(CK60A)and its deriva-tives Heilong 11A and Yuanxin 1A.Consequently,they possess only onekind of cytoplasm viz.the Milo cytoplasm.According to their pedigrees,the R-lineos(from pedigree breeding)could be divided into four ca-tegories:1)progenies of Hegri×kaoliang and their derivatives.The re-presentative lines were Xinliang 7,Ji-7384,Jinliang 5,Xinliang 52.2)progenies of kafir×kaoliang and their derivatives.The representativelines were Jinfu 1,Tiehui 6 and 4003.3)progenies of kaoliang×kaoliang.These include Baiping,Tiehui 2 and Baoliang 3.4)progenies of otherexotic sorghum×kaoliang,The first and second categories contain about60% of all R-line so far used in China.For this reason,it could beconsidered that the genetic basis of R-lines were mainly from local Kao-liang.It could be seen also that the genetic basis of A-lines,includingcytoplasm and nuclei,as well as the nuclei of R-lines,is rather narrow.The necessity and possibility of diversification of the genetic basis ofboth A-lines and R-lines in China were also emphasized and discussed.更多还原