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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (10): 69-73.doi: 10.11924/j.issn.1000-6850.casb15010068

所属专题： 生物技术； 园艺

• 林学 园艺 园林 • 上一篇    下一篇

中国南瓜可溶性固形物含量的主基因+多基因遗传分析

胡新军,韩小霞,粟建文,袁祖华,李勇奇   

  1. (湖南省蔬菜工程技术研究中心/湖南省蔬菜研究所,长沙 410125）
  • 收稿日期:2015-01-12 修回日期:2015-03-05 接受日期:2015-02-12 出版日期:2015-05-05 发布日期:2015-05-05
  • 通讯作者: 韩小霞
  • 基金资助:
    “十二五”农村领域国家科技计划“南瓜杂种优势利用与新品种选育”(2012BAD02B03-17)；农业部公益性行业（农业）科研专项“南瓜产业技术研究与示范”(201303112)。

Genetic Analysis of Soluble Solid Content in Cucurbita moschata Using Mixed Major Gene plus Polygene Inheritance Model

Hu Xinjun, Han Xiaoxia, Su Jianwen, Yuan Zuhua, Li Yongqi   

  1. (The Vegetable Engineering Technology Research Center of Hunan Province/ Hunan Vegetable Research Institute, Changsha 410125)
  • Received:2015-01-12 Revised:2015-03-05 Accepted:2015-02-12 Online:2015-05-05 Published:2015-05-05

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摘要： 为明确中国南瓜可溶性固形物含量的遗传规律，选用中国南瓜杂交获得的6世代群体(P1、P2、F1、F2、BCP1、BCP2)为材料，应用植物数量性状的主基因+多基因遗传模型研究其遗传规律。结果表明，该群体可溶性固形物含量的遗传符合2对加性-显性-上位性主基因+加性-显性多基因混合遗传模型，2对主基因的加性效应均为-0.7077，均使可溶性固形物含量降低；显性效应分别为3.5034和1.3586，均使可溶性固形物含量升高。多基因的加性效应和显性效应分别为2.3066和-0.6679。其主基因遗传率在BCP1、BCP2、F2分别为17.06%、56.01%、95%，多基因遗传率在BCP1、BCP2、F2分别为47.16%、18.78%、0；说明主基因表现出较高的遗传力，可以在早期世代对可溶性固形物含量进行选择。研究为中国南瓜育种品质性状选择和分子标记辅助选择提供了理论依据。

关键词: 滤嘴压降, 滤嘴压降, 接装纸, 成型纸, Pb、 As、 Cd

Abstract: In order to understand the genetic model of soluble solid content in Cucurbita moschata, the mixed major gene plus polygene inheritance model was used to investigate the inheritance of soluble solid content in the material of the six generations (P1, P2, F1, F2, BCP1, BCP2) derived from hybrid Cucurbita moschata. The results showed that the traits of soluble solid content were controlled by two major genes with additive-dominance-epistemic effects and polygenes with additive-dominance effects model in the joint analysis of six generations. The additive effects of the two major genes were -0.7077, indicated the reducing of the soluble solid content; the dominance effects of the two major genes were 3.5034 and 1.3586, respectively, indicated the increasing of the soluble solid content. The polygenes additive and dominance effect were 2.3066 and -0.6679, respectively. The major gene heritabilities of BCP1, BCP2 and F2 populations were 17.06%, 56.01% and 95%, respectively, and the polygenes heritabilities of BCP1, BCP2 and F2 populations were 47.16%, 18.78% and 0 respectively, it indicated that the higher hereditability of major genes could be favorable to an efficient selection in early generation of breeding. This research provided the theoretical basis for the selection of breeding quality traits and marker-assisted selection in Cucurbita moschata.