遗传 ›› 1997, Vol. 19 ›› Issue (6): 12-14.

• 论文 • 上一篇    下一篇

小麦干尖叶的遗传研究初报

张改生1; 赵惠燕1; 葛世敏1; 张建国1; 陈新宏2 ZHANG Gai-Sheng1;ZHAO Hui-Yan1;GE Shi-Min1;ZHANG Jian-guo1;ZHANG Xin-Hong2   

  1. 1.西北农业大学小麦研究所, 陕西杨陵 712100 2.中国科学院西北植物研究所,陕西杨陵 712100 1.Wheat Research Institute of Northwestern Agricultural University,Yangling,Shanxi 712100 2.Northwestern Institute of Botany,Chinese Academy of Sciences,Yangling,Shanxi 712100
  • 收稿日期:1900-01-01 出版日期:1997-12-10 发布日期:1997-12-10

A Preliminary Study on Inheritance of Wheat Leaf-tip Necrosis

  • Received:1900-01-01 Online:1997-12-10 Published:1997-12-10

摘要: 小麦干尖叶是近年在小麦育种中所发现的一种叶部坏死性状,直接影响小麦的产量。本文以具有干尖叶与正常叶这一相对性状的部分小麦品种(系)为基本材料,采用正反杂交、正反回交及杂种后代分析和异源细胞质替换,首次对干尖叶的遗传及性状传递规律进行了研究。结果表明:干尖叶性状与一般杂种坏死与黄化截然不同, 并非仅杂种所具有,能作为纯系稳定遗传; 其表型受核内一对主效显性基因所控制,即使采用异源细胞质替换, 以特定质核互作也难以克服这一性状的对外表达,只有通过杂交与后代选择,纯化与稳定隐性正常叶方可克服。
Abstract:In this paper,the inheritance and transmission law of the character for wheat leaf-tip necrosis were firstly investigated with the contrasting character of leaf-tip necrosis and normal leaf in wheat varieties for basic test materials by reciprocal crosses and backcrosses,hybrid progeny analysis and aliencytoplasm substitution.The results indicated that the wheat leaf-tip necrosis is abviously different from the hybrid necrosis and hybrid chlorosis.It is not only expressed in hybrid but also stable inheritance as pureline.Its phenotype is conditioned by a pair major dominant gene.It is not overcome even if special interaction of nucleus-cytoplasm after alien cytoplasm substitution.Only be the varieties or lines with normal leaf obtained by crossing and selecting stable normal leaf character with recessive gene.

关键词: 异源细胞质替换
Key words,
Wheat, 遗传, 干尖叶, 小麦, 中间过渡核型, 银额果蝇, 自然群体

Key words: Drosophila albomicans, New karyotype, Natural population