[太湖地区粳稻地方品种黑壳子粳抗稻瘟病的遗传分析]

[Genetic analysis of blast resistance in japonica rice landrace heikezijing from Taihu region].

作者信息

Wang Jian-Fei, He Xin-Jian, Zhang Hong-Sheng, Chen Zhi-Yi

机构信息

State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China.

出版信息

Yi Chuan Xue Bao. 2002 Sep;29(9):803-7.

PMID:12561228

Abstract

Japonica rice landrace Heikezijing (HKZJ) from Taihu region is highly resistant to several Chinese and Japanese differential strains of Magnaporthe grisea. The F1, F2 and RIL populations from the cross between the resistant variety Heikezijing and the susceptible variety Lijiangxintuanheigu (LJXTHG) were inoculated by spray with two strains of Ken 54-04 and Hoku 1 in seedling stages. Based on the R:S ratios of segregation in F1, F2 and RIL populations it was showed that there were two independent dominant genes in Heikezijing in responsible for resistance to strain Ken 54-04 and one dominant R gene to strain Hoku 1 which is the same to one of the two genes resistant to Ken 54-04. The allelic test indicated that the gene with resistance to both Hoku 1 and Ken 54-04 is non-allelic to loci of Pi-k, Pi-z, Pi-ta, Pi-b and Pi-t, also neither Pi-i nor Pi-a gene. It is necessary to confirm whether it is an unknown gene.

摘要

来自太湖地区的粳稻地方品种“黑壳子粳”（HKZJ）对多个中国和日本稻瘟病菌生理小种具有高度抗性。在苗期，用 Ken 54 - 04 和 Hoku 1 两个菌株对抗性品种“黑壳子粳”与感病品种“丽江新团黑谷”（LJXTHG）杂交产生的 F1、F2 和重组自交系群体进行喷雾接种。根据 F1、F2 和重组自交系群体的抗感分离比例（R:S）表明，“黑壳子粳”中存在两个独立的显性基因负责对 Ken 54 - 04 菌株的抗性，以及一个对 Hoku 1 菌株的显性 R 基因，该基因与对 Ken 54 - 04 抗性的两个基因之一相同。等位性测验表明，对 Hoku 1 和 Ken 54 - 04 均有抗性的基因与 Pi - k、Pi - z、Pi - ta、Pi - b 和 Pi - t 位点非等位，也与 Pi - i 和 Pi - a 基因不等位。有必要确认它是否是一个未知基因。