对产生2n配子的二倍体杂种遗传效应的估计  

ESTIMATION OF GENETIC EFFECT FOR 2N POLLEN PRODUCING DIPLOID HYBRIDS

作　　者：田兴亚[1] 陈伊里[1] 吕文河[1] 王凤义[1] 欧阳广琪 

机构地区：[1]东北农业大学

出　　处：《马铃薯杂志》1996年第1期24-28,共5页Chinese Potato Journal

摘　　要：用能产生２ｎ配子的二倍体杂种作父本，进行４ｘ—２ｘ杂交．采用不完全双列杂交设计，测定了两类亲本的杂种无性一代产量性状的变化动态．研究结果表明，单株产量的４Ｘ—２Ｘ一般配合力６９．６％，特殊配合力３０．３％．２ｘ父本遗传力３７．２％，４ｘ母本遗传力１６．３％，父母本交互遗传力２３．０％，４ｘ—２ｘ广义遗传力７６．７％，狭义遗传力５３．４％。含有Ｓ．Ｐｈｕｒｅｊａ血缘的２ｘ杂种，能较好地将高淀粉含量、早熟性、芽眼极浅等特性遗传给４ｘ—２ｘ杂种后代．经最新选择的２ｘ亲本，在缩短匍匐茎长度、减少结薯个数、提高大薯率和品质上有很大改进．Three 2x clones with 2n pollen production, BPH32-2, BPH32-5 and W5295.7, were eachmated with three 4x cultivars, Raritan, Superior and Trout, in an incomplete diallel cross design. Estimates of various hcritability for tuber yield per plant are that is 37.2%, 16.3%, 23.3%, 76.7% and 53.4. Estimates of general combining ability (GCA) and specificcombining ability (SCA) are 69.6% and 30.3%, rcspectively. The results suggest that additiveeffect of genes for tuber yield is obvious. The 2n pollen producing diploid hybrids have goodbreeding values for yield, carlincss and starch content.

关 键 词：二倍体杂种 配合力 遗传力 马铃薯 

分 类 号：S532.035.1[农业科学—作物学]