Genotypic and phenotypic dissection of Xanthomonas oryzae pv. oryzae on Indica rice cultivars for bacterial blight resistance

被引：1

作者：

Kumar, J. ^{[1
,2
]}

Hussain, A. ^{[3
]}

Singh, P. ^{[1
,4
]}

Baksh, S. K. Y. ^{[1
]}

Kar, M. K. ^{[1
]}

Mukherjee, A. K. ^{[5
]}

Singh, N. R. ^{[2
]}

Sinha, B. ^{[3
]}

Pramesh, Kh ^{[3
]}

Singh, N. ^{[3
]}

Reddy, J. N. ^{[1
]}

机构：

[1] ICAR Natl Rice Res Inst ICAR NRRI, Div Crop Improvement, Cuttack 753006, India

[2] Ravenshaw Univ, Dept Biotechnol, Cuttack 753006, India

[3] Cent Agr Univ, Dept Genet & Plant Breeding, Imphal 791103, Manipur, India

[4] Bihar Agr Univ, Veer Kunwar Singh Coll Agr, Dept Plant Breeding & Genet, Buxar 802136, India

[5] ICAR Natl Rice Res Inst ICAR NRRI, Div Plant Protect, Cuttack 753006, Orissa, India

来源：

JOURNAL OF ENVIRONMENTAL BIOLOGY | 2021年 / 42卷 / 06期

关键词：

Bacterial blight; Genetic diversity; Indica rice; Pathotyping; Resistant gene; LEAF-BLIGHT; IDENTIFICATION; GENES;

D O I：

10.22438/jeb/42/6/MRN-1156

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Aim: To evaluate the level of virulence of different Xoo isolates/pathotypes of Eastern and North-eastern India and to identify the suitable donors in rice cultivars having various R-gene combination against virulent Xoo races of Bacterial Blight disease of rice. Methodology: Thirty six Xoo isolates were collected from different places of Eastern and North-eastern India and genetic diversity/similarity was examined by genotyping of pathotypes using JEL1/JEL2 markers. The 34 Indica rice cultivars carrying different R-gene combination were selected and grown in net house and inoculated artificially with Xoo inoculants from these races/isolates bacterial of blight disease. Results: The selected 36 Xoo isolates of Eastern and North-eastern India were grouped into seven different isolates/races based on their genetic diversity using JEL1/JEL2 markers. Among 34 Indica rice cultivars, three or more R-gene combination (xa5 + xa13 + Xa21 and/or Xa4 + xa5 + xa13 + Xa21) cultivars exhibited highly resistant as compared to cultivars with single and double gene combination cultivars against most of the Xoo isolates/races. Interpretation: The cultivars may determine different level of resistance due to complementary effect of inheritance of suitable R-gene combination. Identified donors may be used for rice resistance breeding programme for Eastern and North-eastern India.

引用

页码：1578 / 1590

页数：13

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