STUDIES ON VIRULENCE REACTIONS OF LOCAL ISOLATES OF XANTHOMONAS ORYZAE PV. ORYZAE

被引：0

作者：

Mannan, Shazia ^{[1
]}

Malik, Salman Akbar ^{[2
]}

Ahamad, Iftikhar ^{[3
]}

Mirza, Javed Iqbal ^{[3
]}

Akhtar, Muhammad Afzal ^{[3
]}

机构：

[1] COMSATS Sahiwal, Dept Biosci, Sahiwal, Pakistan

[2] Quaid I Azam Univ, Dept Biochem, Islamabad, Pakistan

[3] Natl Agr Res Ctr, Inst Plant & Environm Protect, Crop Dis Res Programme, Islamabad, Pakistan

来源：

PAKISTAN JOURNAL OF BOTANY | 2009年 / 41卷 / 01期

关键词：

BACTERIAL-BLIGHT PATHOGEN; PHYSIOLOGICAL RACES; GENETIC DIVERSITY; RESISTANCE GENES; RICE; STRAINS; POPULATIONS; DESIGNATION; LINES;

D O I：

暂无

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Local isolates of Xanthomonas oryzae pv. oryzae were collected from different rice producing areas of Pakistan and evaluated for their virulence on 12 rice lines viz., IRBB1, IRBB2, IRBB3, IRBB4, IRBB5, IRBB7, IRBB8, IRBB10, IRBB11, IRBB13, IRBB14 and IRBB21. The ability of an isolate to cause lesions with different lengths across the lines was interpreted as virulence. Isolates that were consistently associated with high or low virulence were differentiated. Isolates produced lesions of different sizes on different rice lines. Five virulence groups (races) were identified based on the virulence of the bacterial isolates on these lines. No single gene tested was found to be resistant against all virulence groups prevalent in Pakistan. The results of this study will facilitate the breeders in deployment of effective resistance genes against X. oryzae pv. oryzae strains prevalent in Pakistan.

引用

页码：391 / 402

页数：12

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