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Improvement of blast resistance of the popular high-yielding, medium slender-grain type, bacterial blight resistant rice variety, Improved Samba Mahsuri by marker-assisted breeding

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Title Improvement of blast resistance of the popular high-yielding, medium slender-grain type, bacterial blight resistant rice variety, Improved Samba Mahsuri by marker-assisted breeding
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Creator G. Rekha, V. Abhilash Kumar, B. C. Viraktamath, K. Pranathi, M. B. V. N. Kousik, B. Laxmi Prasanna, C. Backiyalakshmi, Pragya Sinha, R. K. Ravindra, S. Bhaskar, S. K. Hajira, C. H. Balachiranjeevi, K. Swapnil, R. Rambabu, G. Harika, E. Punniakotti, M. Anila, H. K. Mahadev, T. Dilip Kumar, A. Yugander, K. Chaitra, M. Praveen, K. R. Madhavi, M. S. Prasad, G. S. Laha, C. N. Neeraja, S. M. Balachandran, P. Senguttuvel, R. A. Fiyaz et al
 
Subject Rice Blast Bacterial blight Improved Samba Mahsuri Xa21 xa13 xa5 Pi2 Pi54
 
Description Not Available
Improved Samba Mahsuri (ISM) is a popular, high yielding, bacterial blight resistant rice variety possessing mediumslender
grain type. As ISM is highly susceptible to blast disease of rice, through the present study we have transferred two
major blast resistance genes, Pi2 and Pi54 into the elite variety by marker assisted backcross breeding. The two blast
resistance genes were transferred to ISM through sets of backcrosses. In every backcross generation, PCR based markers,
specific for the blast resistance genes (Pi2 and Pi54) and bacterial blight resistance genes (Xa21, xa13 and xa5) were
utilized for foreground selection, while a set of 144 parental polymorphic SSR markers were used for background selection
and backcrossing was carried out until BC2 generation. A solitary BC2F1 plant possessing Pi2 or Pi54 along with Xa21,
xa13 and xa5 and[90%] recovery of ISM genome was selected from the two sets of backcrosses were crossed and the
intercross F1s (ICF1s) thus obtained were selfed to generate ICF2s. Homozygous ICF2 plants carrying all the five resistance
genes were identified through markers and advanced through selfing till ICF5 generation by adopting pedigree method of
selection. Three best lines at ICF5, possessing excellent resistance against bacterial blight and blast and closely resembling
or superior to ISM in terms of grain quality: yield and agro morphological traits have been identified and advanced for
multi location trials
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Date 2024-04-15T11:13:59Z
2024-04-15T11:13:59Z
2018-03-21
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/82088
 
Language English
 
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Publisher Not Available