华北农学报2011，Vol.26Issue(3)：1-6,6.
稻瘟病抗病基因Pita和Pib在中国水稻地方品种中的分布
Distribution of Two Blast Resistant Genes Pita and Pib in Landrace Rice in China
摘要
Abstract
The two major blast resistance genes, Pita and Pib, showed broad resistance spectrum to Magna-porthe grisea isolates in many rice planting areas of China and has been utilized in rice breeding and commercial production. However,the distribution of this two genes in present rice germplasms has not been well investigated,resulting in the blindness of their utilization in rice breeding. In the present study, the existence of the two genes in 115 landrace rice germlpasms and 19 rice leading cultivars were rapidly determined using the functional markers of Pita/pita and Pib/pib alleles. The results showed that 20 landrace accessions harbored Pita resistant allele and only 2 landrace accessions harbored Pib resistant allele. The Pita resistant allele distribute widely in china including Zhejiang Province, Fujian Province, Guangdong Province, Cuangxi Province, Sichuan Province, Guizhou Province , Anhui Province, Jiangxi Province, Henan Province, Hebei Province, Jilin Province, but not found in Jiangsu Province, Shandong Province, Hunan Province, Hubei Province and Shanghai City. Only two landrace harbored the Pib resistant allele. However, 11 cultivars harbored Pita resistant allele and 8 cultivars harbored Pib resistant allele. Interestingly, the 8 cultivars harboring Pib carried the Pita resistant allele simultaneously. These results are useful for rational utilization and deployment of the rice cultivars and gennplasm with the Pita and Pib genes and for incorporating and stacking these genes into elite present leading cultivars and lines by marker assisted selection in rice breeding programs nationwide.关键词
水稻/稻瘟病/主栽品种/抗性基因/分子标记Key words
Rice/ Rice blast/ Leading cuhivar/ Resistance gene/DNA marker分类
生物科学引用本文复制引用
杨杰,杨金欢,王军,范方军,朱金燕,曹卿,田胜尼,仲维功..稻瘟病抗病基因Pita和Pib在中国水稻地方品种中的分布 [J].华北农学报,2011,26(3):1-6,6.基金项目
国家转基因生物新品种培育科技重大专项(2009ZX08001-005B,019B) （2009ZX08001-005B,019B）
国家科技支撑计划重大项目(2006BAD02A03) （2006BAD02A03）
江苏省自然科学基金项目(BK2009321):江苏省农业科技自主创新基金项目 （BK2009321）
江苏省六大人才高峰项目 （）
江苏省农业科学院基金项目(6110703 （）
6510806) （）
