Inheritance of blast resistance and its allelic relationship with five major R genes in a rice landrace "Vanasurya"

Inheritance of blast resistance and its allelic relationship with five major R genes in a rice landrace "Vanasurya"

A rice landrace "Vanasurya" was identified to be blast resistant after multilocation evaluation under uniform blast nursery (UBN). The F2population derived from the cross between Vanasurya x susceptible rice cultivar, CO 39 showed a segregation of 3R:1S, which revealed that the resistance...

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Veröffentlicht in:Indian phytopathology 2014-01, Vol.67 (4)
Hauptverfasser: Rajashekara, H, Ellur, Ranjith K, Khanna, Apurva, Nagarajan, M, Krishnan, S Gopala, Singh, A K, Sharma, P, Sharma, T R, Singh, U D
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container_issue 4
container_start_page
container_title Indian phytopathology
container_volume 67
creator Rajashekara, H
Ellur, Ranjith K
Khanna, Apurva
Nagarajan, M
Krishnan, S Gopala
Singh, A K
Sharma, P
Sharma, T R
Singh, U D
description A rice landrace "Vanasurya" was identified to be blast resistant after multilocation evaluation under uniform blast nursery (UBN). The F2population derived from the cross between Vanasurya x susceptible rice cultivar, CO 39 showed a segregation of 3R:1S, which revealed that the resistance to blast disease is governed by a single dominant gene. Test of allelic relationship of blast resistance in the landrace, Vanasurya with known major blast resistance genes, viz. Pi1, Pi9, Pita, Piz5 and Pi54 by crossing it with the monogenic blast differentials showed that blast resistance gene in Vanasurya was allelic to Pita whereas it was non-allelic to other genes tested. This was further confirmed through molecular marker analysis with a gene based marker YL155/87 for Pita.
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title Inheritance of blast resistance and its allelic relationship with five major R genes in a rice landrace "Vanasurya"
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