华北农学报2017，Vol.32Issue(z1)：88-94,7.DOI:10.7668/hbnxb.2017.S1.016
水稻株高和每穗颖花数的6个世代联合遗传分析
Joint Genetic Analysis on Plant Height and Spikelets Per Panicle by Using Six Generations of Two Crosses in Indica Rice
摘要
Abstract
The inheritances of plant height and spikelets per panicle were studied in hybrid Indica.Their genet-ic analysis were discussed based on the major gene-polygene mixed inheritance model with P1,P2,F1,B1,B2,F2six generation derived from two crosses of WHR2×Ai 93 and DSBao×Ai 93.The results showed that the inheritances of plant height and spikelets per panicle were controlled by two major genes with additive-dominant-epistatic effects plus polygene with additive-dominant effects.According to the genetic models,the components distribution was fit-ted,and the distributions of the characters were truly revealed.For two traits,additive effects were principal.The plant height was partly dominant to the dawf,and the heterosis could improve the biological yield of hybrid and in-crease the lodging resistance of hybrid.The less number of spikelets per panicle was partially dominant to the more, which was not conducive to the formation of big panicles and affected the yield advantage.Therefore,in order to make rational use of plant height characteristics in the restorer Ai 93,it was bred with high yield restorer or sterile lines of more spikelets per panicle with genetic distance to break the unfavorable gene linkage,which cultivated breeding of new hybrid rice combination with high yield.关键词
水稻/株高/每穗颖花数/遗传Key words
Oryza sativa L./Plant height/Spikelets per panicle/Inheritance分类
农业科技引用本文复制引用
刘金波,卢百关,方兆伟,王宝祥,徐大勇,徐波,李建红,李健,刘艳,周振玲,杨波,迟铭,宋兆强..水稻株高和每穗颖花数的6个世代联合遗传分析[J].华北农学报,2017,32(z1):88-94,7.基金项目
现代农业技术体系建设专项资金 （）
江苏省科技支撑计划子项目(BE2016370-3) （BE2016370-3）
江苏省自然科学基金项目(BK20161299) （BK20161299）
连云港市科技攻关项目(CN1502) （CN1502）
产学研联合研究项目(CXY1523) （CXY1523）
国家科技支撑计划子课题(2015BAD01B01) （2015BAD01B01）
