普通野生稻及其与转bar基因水稻杂交F_1代的生存竞争力  

Survival Competitiveness Between Common Wild Rice and the F_1 Hybrids of Its Cross with bar Transgenic Rice

作　　者：乔健[1] 徐立新[1] 俞欢慧[1] 李厚奇[1] 袁潜华[1] 

机构地区：[1]海南大学农学院,海南海口570228

出　　处：《热带生物学报》2013年第2期153-159,共7页Journal of Tropical Biology

基　　金：转基因生物新品种培育科技重大专项(2011ZX08011-001)

摘　　要：分别以普通野生稻(Oryza rufipogon Griff)崖城居群、万宁居群、东方居群为母本,以转bar基因抗除草剂水稻品种B2为父本,人工杂交得到转bar基因栽野杂交F1代种子(简称"Bar野后代")。从种子活力、农艺性状、结实能力和再生能力等方面,对Bar野后代和普通野生稻的生存竞争力进行了比较分析。结果表明,Bar野后代种子的发芽能力总体上高于野生稻;农艺性状方面,单作时Bar野后代与野生稻的分蘖数、剑叶面积相差不大,混作时Bar野后代总体上明显优于野生稻,且Bar野后代的相对竞争力(RCA)强于野生稻;结实性方面,Bar野后代稻穗的结实能力总体上强于野生稻;大部分野生稻的稻茬再生率均高于Bar野后代植株。Yacheng,Wanning and Dongfang populations of common wild rice （ Oryza rufipogon Griff） were crossed with bar transgenic rice B2 （ male parent） to produce F1 hybrids （＂Bar-wild hybrids＂） . The growth competition between the common wild rice and the Bar-wild hybrids was analyzed by comparing their performance in seed viability,growth characteristics,seed set,regeneration ability and other key agronomic traits under field conditions. The Bar-wild hybrids generally had a higher germination rate than the common wild rice. The Bar-wild hybrids were not much different in flag leaf area and tiller number from the common wild rice in monoculture but had higher relative competitiveness ability than the common wild rice in mixed culture. The Bar-wild hybrids generally had a high seed set percentage but had a lower ratooning rate （ regeneration of the stubbles） than the common wild rice.

关 键 词：转基因水稻 BAR基因 普通野生稻 杂交F1代 生存竞争力 

分 类 号：S511.9[农业科学—作物学]