欢迎访问《草业学报》官方网站,今天是 分享到:

草业学报 ›› 2011, Vol. 20 ›› Issue (3): 205-210.

• 研究论文 • 上一篇    下一篇

裸仁美洲南瓜种皮性状遗传规律研究

薛应钰1,2,师桂英3,徐秉良1,2*,陈荣贤4   

  1. 1.甘肃农业大学草业学院 草业生态系统教育部重点实验室 中-美草地畜牧业可持续发展研究中心(甘肃农业大学),甘肃 兰州 730070;
    2.甘肃省作物遗传改良与种质创新重点实验室,甘肃 兰州 730070;
    3.甘肃农业大学农学院,甘肃 兰州 730070;
    4.甘肃省武威金苹果有限责任公司,甘肃 武威 733000
  • 收稿日期:2010-10-13 出版日期:2011-03-25 发布日期:2011-06-20
  • 通讯作者: E-mail:xubl@gsau.edu.cn
  • 作者简介:薛应钰(1978-),男,甘肃镇原人,讲师,在读博士。E-mail:xueyy@gsau.edu.cn
  • 基金资助:
    国家自然科学基金项目(30671267)和甘肃省科技厅中青年基金项目(3YS051-A25-015)资助。

A study on the genetic law of seed coat characters in hull-less Cucurbita pepo

XUE Ying-yu1,2, SHI Gui-ying3, XU Bing-liang1,2, CHEN Rong-xian4   

  1. 1.College of Grassland Science, Gansu Agricultural University/Key Laboratory of Grassland Ecosystem, Gansu Agricultural University, Ministry of Education,Sino-U.S. Centers for Grassland Ecosystem Sustainability, Lanzhou 730070, China;
    2.Gansu Key Laboratory of Crop Genetic&Germplasm Enhancement,Lanzhou 730070, China;
    3.College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China;
    4.Wuwei Golden Apple Co., Ltd.,Wuwei 733000, China
  • Received:2010-10-13 Online:2011-03-25 Published:2011-06-20

摘要: 采用3个有壳美洲南瓜自交系04FC409-4、03N-122-19、04LAg-26-2和3个无壳美洲南瓜自交系04GD112-7、1N-275-7、04LAg-26-28作亲本,通过正、反交及回交组配,对其杂交组合(04FC409-4×04GD112-7、03N-122-19×1N-275-7、04LAg-26-2×04LAg-26-28)的F1、F2、BC1和BC2各世代的种皮分离比率进行统计分析,结果表明,F1代种皮性状表现一致,无论正、反交均表现为有壳;F2代无论正、反交都分离出有壳和无壳2种性状,且分离比率接近3∶1;BC1(以有壳的自交系作父本进行回交)种皮均表现为有壳,BC2(以无壳的自交系作父本进行回交)种皮则表现出有壳和无壳的分离,分离比率接近1∶1。根据经典遗传学原理对种皮的遗传效应进行了研究,初步推断出:美洲南瓜种皮的有壳与无壳受一对核基因控制,有壳对无壳为显性。

Abstract: The seed coat trait of Cucurbita pepo was classified into two types, seed-hulled and seed-naked. Experiments were performed to study the inheritance pattern. Three inbreeds with hulled seed, 04FC409-4, 03N-122-19 and 04LAg-26-2, and three inbreeds with hull-less seed, 04GD112-7, 1N-275-7 and 04LAg-26-28, were used as the parental lines in the mating patterns 04FC409-4 and 04GD112-7, 03N-122-19 and 1N-275-7, 04LAg-26-2 and 04LAg-26-28. In the F1 generations, all the plants were seed-hulled. However, in the F2 generations, segregation of hulled and hull-less seeds showed the ratio of almost 3 to 1. For the backcrosses, all the BC1 and F1 (the inbreed with hulled seed used as recurrent parent) generations appeared seed-hulled. But in the BC2 and F1 (the inbreed with hull-less seed as recurrent parent) generations, segregation of hulled and hull-less seeds showed the ratio of almost 1 to 1. So it was concluded that each of the hulled seed and hull-less seed in C. pepo was controlled by one pair of different nuclear genes and “seed-hulled” was dominant to “seed-hull-less”.

中图分类号: