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园艺学报 ›› 2006, Vol. 33 ›› Issue (3): 632-634.

• 研究简报 • 上一篇    下一篇

西瓜倍性回复突变研究

谭素英;刘文革;阎志红;赵胜杰;何 楠;马双武;王吉明

  

  1. (中国农业科学院郑州果树研究所, 河南郑州450009)
  • 收稿日期:2005-07-25 修回日期:2005-09-26 出版日期:2006-06-25 发布日期:2006-06-25

Studies on Watermelon Ploidy Revertant

Tan Suying;Liu Wenpge;Yan Zhihong;Zhao Shengjie;He Nan;Ma Shuangwu;Wang Jiming   

  1. ( Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450009, China)
  • Received:2005-07-25 Revised:2005-09-26 Online:2006-06-25 Published:2006-06-25

摘要: 2001年和2002年在四倍体西瓜品种790010、日み66、91E7和770007中各发现1份类似二倍体西瓜的种子, 对这4份突变体进行了形态学和细胞学的观察和鉴定。结果表明: 突变体的茎、叶、花、果实和种子的形态特征与对照四倍体有明显差异。显微特征也有差异, 其花粉粒直径和保卫细胞均较小,叶绿体数也减少, 体细胞具22条染色体, 是对照四倍体的一半, 具典型的二倍体西瓜特征, 同时还具原品种特征, 因此确定4份突变体均由四倍体西瓜回复突变而来。

关键词: 西瓜, 倍性, 回复突变

Abstract: Fourmutants were discovered in autotetraploid watermelon varieties 790010, 日み66, 91E7 and 770007 in 2001 and 2002. Their morphological and cytological characteristics were observed and identified, comparing with original autotetraploid watermelon. The morphological traits of the mutants had been obvious characteristics of dip loid watermelon and original variety. The pollen size and leaf guard cell size of the mutants become smaller and chlorop lasts number in guard cell diminished, and chromosomes number of the
mutants somatic cell were 22, which were half of autotetraploid watermelon. Finally four mutants were confirmed revertants of autotetraploid watermelon.

Key words: watermelon, Ploidy, Revertant