Marker-aided selection and validation of various Pi gene combinations for rice blast resistance in elite rice variety ADT 43

Pandian, B A and Joel, J and Nachimuthu, V V and Swaminathan, M and Govintharaj, P and Tannidi, S and Sabariappan, R (2018) Marker-aided selection and validation of various Pi gene combinations for rice blast resistance in elite rice variety ADT 43. Journal of Genetics (TSI), 97 (4). pp. 945-952. ISSN 0022-1333

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Abstract

Rice blast caused by fungal pathogen Pyricularia oryzae has a major impact on reducing yield potential of rice. In this study, homozygous plants were selected using microsatellite markers from the BC3F2 population pyramided with four major genes in elite rice variety ADT 43. Background and selected lines with various blast resistance gene combinations were screened under natural conditions to study the effects of various gene combinations. Upon inspection of lines with different gene combinations, the three-gene pyramided line Pi54+Pi33+Pi1 was found to be highly resistant with the score of 3.3 followed by other three-gene pyramided lines Pi54+Pi2+Pi1 and Pi33+Pi2+Pi1, with the scores of 3.9 and 3.8, respectively. Two-gene pyramided lines Pi54+Pi1, Pi33+Pi1 and Pi2+Pi1 were found to be moderately resistant with a mean score of 4.0 each. In the case of monogenic lines, positive plants for Pi54 performed almost equal to three-gene pyramided lines with a mean score of 3.6. Lines with Pi2 and Pi1 were found to be moderately resistant and moderately susceptible with the mean scores of 4.1 and 4.5, respectively.

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Uncontrolled Keywords: Rice, blast resistance, Pi gene combinations, fungal pathogen, Pyricularia oryzae
Subjects: Others > Rice
Others > Genetics and Genomics
Depositing User: Mr Ramesh K
Date Deposited: 15 Oct 2018 10:00
Last Modified: 15 Oct 2018 10:00
URI: http://oar.icrisat.org/id/eprint/10895
Official URL: http://dx.doi.org/10.1007/s12041-018-0988-7
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: UNSPECIFIED
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