scholarly journals Genetic variation, heritability, divergence and biomass accumulation of rice genotypes resistant to bacterial blight revealed by quantitative traits and ISSR markers

2013 ◽  
pp. n/a-n/a ◽  
Author(s):  
Muhammad S. Mazid ◽  
Mohd Y. Rafii ◽  
Mohamed M. Hanafi ◽  
Harun A. Rahim ◽  
Md Abdul Latif
Keyword(s):  
Genetic Variation ◽  
Bacterial Blight ◽  
Quantitative Traits ◽  
Biomass Accumulation ◽  
Issr Markers ◽  
Rice Genotypes

scholarly journals Exploring of bacterial blight resistance in landraces, mining of resistant gene(s) and genetic divergence of resistant germplasm through molecular markers and quantitative traits.

2021 ◽  
Author(s):  
Touhidur Rahman Anik ◽  
Sheikh Arafat Islam Nihad ◽  
Md. Al-Imran Hasan ◽  
Mohammad Ahasan Hossain ◽  
Md. Mamunur Rashid ◽  
...  
Keyword(s):  
Genetic Similarity ◽  
Bacterial Blight ◽  
Quantitative Traits ◽  
Molecular Study ◽  
Issr Markers ◽  
Morphological Data ◽  
Pathogenicity Test ◽  
Resistant Varieties ◽  
Wide Range ◽  
Moderately Resistant

Bacterial blight, one of the oldest and severe diseases of rice poses a major threat towards global rice production and food security. Thereafter, sustainable management of this disease has given paramount importance globally. In the current study, we explored 792 landraces to evaluate their disease reaction status against three highly virulent strains ( BXo69 , BXo87 and BXo93 ) of Xanthomonas oryzae pv . oryzae ( Xoo ). Subsequently, we intended to identify the possible candidate resistant ( R ) genes responsible for the resistant reaction using six STS markers correspond to Xa4 , xa5 , Xa7 , xa13 , Xa21 and Xa23 genes and finally, we evaluated morphological and molecular diversity of the potential bacterial blight resistant germplasm using quantitative traits and ISSR markers. Based on pathogenicity test, a single germplasm was found as highly resistant while, 33 germplasm were resistant and 40 were moderately resistant. Further molecular study on these 74 germplasm divulged that 41 germplasm carried Xa4 gene, 15 carried xa5 gene, 62 carried Xa7 gene, 33 carried xa13 gene, and 19 carried Xa23 gene. Only a single germplasm consisted of Xa21 gene. Interestingly, we found a wide range of gene combinations ranged from 2 to 4 genes among the germplasm resistant to bacterial blight and G3 genotype (Acc. No. 4216; highly resistant) having Xa4 , Xa7 , xa13 , Xa21 and G43 genotype (Acc. No. 1523; resistant) having Xa4 , xa5 , xa13 and Xa23 gene combination being the most effective against all the Xoo strains. Nonetheless, UPGMA dendrogram and heatmap analysis based on quantitative traits identified two important clusters viz. cluster-III and cluster-VIII with multiple desired traits However, genetic similarity based on ISSR marker data pointed out 3 germplasm, namely, G20 (Acc. No. 4004; contained Xa4, Xa7, xa13 genes), G17 (Acc. No. 3981; contained Xa7, xa13 genes) and G6 (Acc. No. 991; contained Xa4, Xa7, xa13, Xa23 genes) having comparatively lower genetic similarity (0.30, 0.37 and 0.38, respectively) with elite variety BRRI dhan28. Notably, Mantle test of molecular and morphological data indicated that there was a positive correlation (r = 0.113) between them.  The outcome of this study would enrich and diversify the rice gene pool and would be useful for the development of durable bacterial blight resistant varieties.

Genetic variation and division ofPinus sylvestris provenances by ISSR markers

2005 ◽  
Vol 16 (3) ◽  
pp. 216-218 ◽  
Author(s):  
Li Hui-yu ◽  
Jiang Jing ◽  
Liu Gui-feng ◽  
Ma Xu-jun ◽  
Dong Jing-xiang ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Issr Markers

scholarly journals HSP90 affects the expression of genetic variation and developmental stability in quantitative traits

2008 ◽  
Vol 105 (8) ◽  
pp. 2963-2968 ◽  
Author(s):  
T. A. Sangster ◽  
N. Salathia ◽  
S. Undurraga ◽  
R. Milo ◽  
K. Schellenberg ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Quantitative Traits ◽  
Developmental Stability

scholarly journals Genetic enhancement of phosphorus starvation tolerance through marker assisted introgression of OsPSTOL1 gene in rice genotypes harbouring bacterial blight and blast resistance

PLoS ONE ◽  
2018 ◽  
Vol 13 (9) ◽  
pp. e0204144 ◽  
Author(s):  
Kannan Chithrameenal ◽  
Ganesh Alagarasan ◽  
Muthurajan Raveendran ◽  
Sabariappan Robin ◽  
Suresh Meena ◽  
...  
Keyword(s):  
Bacterial Blight ◽  
Blast Resistance ◽  
Genetic Enhancement ◽  
Phosphorus Starvation ◽  
Starvation Tolerance ◽  
Rice Genotypes
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