从配合力探讨新CP甘蔗品种的育种潜力  

Study on the Breeding Potential of New CP Sugarcane Varieties From Their Combining Ability

作　　者：林彦铨[1] 陈如凯[1] 何启钧[1] 曾献军 

机构地区：[1]福建农学院甘蔗综合研究所,福州350002

出　　处：《福建农学院学报》1991年第2期123-128,共6页

基　　金：国家教委青年教师基金;国家自然科学基金资助项目的一部分

摘　　要：为探讨新CP甘蔗品种作杂交亲本的遗传特点,采用6×4不完全双列杂交设计,估算5个产量和品质性状的一般配合力(gca)和特殊配合力(sca).方差分析表明,5个性状的母本gca极显著,而组合sca只有丛重,株高和茎径显著.V_(gca)∶V_(sca)表明,在后代群体性状表达上,加性遗传方差组分占有明显优势,根据配合力效应,侧重评价了新CP甘蔗品种的育种潜力,发现CP72—1210和CP67—412为母本易于将高糖高产基因传递给后代,CP65—357为母本的后代茎径和锤度也较理想,F_1群体育种潜力大的组合有CP72—1210×Ya84—125,CP72—1210×Ya82—96,CP67—×Ya71—374和CP65—357×Ya71—370,可用于今后的甘蔗有性杂交育种计划。General (gca) and specific (sea) combining abilities for five yield and quality characters were estimated in a 6×4 incomplete diallel design in order to study the genetic behavior of new CP sugarcane varieties used as parental clones. The analysis of variance indicated that the gca effects of female clones were highly significant for all five characters studied, while sca effects of parental combinations were significant only for clump weight, stalk diameter and plant height. The ratios of gca and sca variance showed taht there were more additive than nonadditive genetic variance components found in the progeny population for these characters. The breeding potential of associated characters were evaluated prior to the new CP sugarcane varieties according to their combining ability effects. It was found that both CP 67-412 and CP 72-1210 were better female clones to tranfer high sugar and yield genes to their progenies, and the progenies of CP 65-357 as female parent also showed desirable stalk diameter and birx. Based on the breeding potential of F_1 population, the best combinations in this study were CP 72-1210× Ya 84-125, CP 72-1210× Ya 82-96, CP 67-412× Ya 71-374 and CP 65-357× Ya 71-370, which can be used in the future hybridizaton program of sugarcane.

关 键 词：甘蔗 品种 育种 配合力 杂交 

分 类 号：S566.103.5[农业科学—作物学]