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园艺学报 ›› 2009, Vol. 36 ›› Issue (9): 1299-1304.

• 蔬菜 • 上一篇    下一篇

西瓜强雌性状的遗传效应分析

刘莉1*;刘翔1;焦定量2;张秦英1; 商纪鹏2;刘军伟1; 郭敏1   

  1. (1 天津大学农业与生物工程学院, 天津300072; 2 天津科润蔬菜研究所, 天津300384)
  • 收稿日期:2009-04-02 修回日期:2009-06-18 出版日期:2009-09-25 发布日期:2009-09-25
  • 通讯作者: 刘莉

Genetic Analysis of Subgynoecious in Watermelon ( Citrullus lanatus)

LIU Li1*;LIU Xiang1;JIAO Ding-liang2;ZHANG Qin-ying1;SHANG Ji-peng2;LIU Jun-wei1;GUOMin1   

  1. (1 College of Agriculture and Bioengineering, Tianjin University, Tianjin 300072, China; 2 Tianjin KernelVegetable Research Institute, Tianjin 300384, China)
  • Received:2009-04-02 Revised:2009-06-18 Online:2009-09-25 Published:2009-09-25
  • Contact: LIU Li

摘要: 以强雌性西瓜品系BG1和普通花性型品系ZY10为材料配制杂交组合, 调查单株30节位内的
雌花比率, 利用主基因+多基因混合遗传模型多世代联合分析法, 对该组合的P1、P1、F1、F2、BC1P1和BC1P2等6个世代群体的雌花率性状进行分析。结果表明: 西瓜强雌性状遗传受两对主基因的加性—显性—上位性模型控制(即B-1模型) , 主基因表现为隐性。第1和第2对主基因的加性效应值分别为33.46和5.17; 而显性效应值分别为- 20.56 和- 11.20。主基因遗传率在BC1P1和F2世代中高达93.75%和94.32% , 在BC1P2世代中较低, 为60.91%。在该组合中不存在多基因的效应。

关键词: 西瓜, 强雌性状, 遗传效应

Abstract: Subgynoecious watermelon (Citru llus lanatus) line BG1 and normal sexual line ZY10 were crossed in this study. Female flower p roportion within 30 nodes for each plant was counted. Six populations ( P1 , P2 , F1 , F2 , BC1 P1 and BC1 P2 ) derived from this crosswere used to investigate the inheritance of subgynoecious by using the mixed major gene and poly-gene inheritance models. The results indicated that subgynoecious in this combination was controlled by two major genes with additive-dominance-epitasis gene effects
(B-1 model). While the major genes showed recessive expression, the additive effects of the 1 st and 2nd major genes were 33.46 and 5.17, respectively and their dominance effects were - 20.56 and - 11.20, respectively. Heritabilities of major genes in the BC1 P1 , BC1 P2 and F2 populations were estimated as93.75% , 60.91% and 94.32%, respectively.

Key words: watermelon, subgynoecious, genetic analysis

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