Concluding studies on the multiple-herbicide resistance mechanism of Echinochloa oryzicola and its inheritance

稗草多重除草剂抗性机制及其遗传研究综述

• 批准号: 18380013
• 负责人: YAMASUE Yuji
• 金额: $ 5.95万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18380013/
• 关键词: Herbicide resistance; Multiple-herbicide resistance; Echinochloa oryzicola; Cytochrome P450; Rice paddy weed; P450

The multiple-herbicide resistant biotype of a rice paddy weed Echinocloa oryzicola, which was found in 1966 at the rice production area of Sacramento, California, was studied on the resistant mechanism(s) and its inheritance. Results of the studies exhibited that the multiple-herbicide resistant biotype showed :Gene expression of 10 cytochrome P450s.Plural sets of alles that govern the herbicide resitance.No genotypic locus of AFLP markers commonly relating to the resistance to the four different herbicides.Several accessions of the resistant biotype had shallower seed dormancy than the counterpart of susceptible biotypes that varied in the depth of seed dormancy.

对1966年在加州萨克拉门托水稻产区发现的一种水稻杂草稻稗（Echinocloa oryzicola）的多抗生物型进行了抗性机理和遗传研究。研究结果表明，多抗生物型具有10个细胞色素P450基因的表达，多组等位基因共同控制除草剂抗性，没有与4种除草剂抗性相关的AFLP标记基因型位点，部分抗性生物型种子休眠较浅，而敏感生物型种子休眠深度不同。