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Conversion of partial restorer Swarna into restorer by transferring fertility restorer Rf gene(s) through marker assisted back cross breeding (MABB) in rice

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Title Conversion of partial restorer Swarna into restorer by transferring fertility restorer Rf gene(s) through marker assisted back cross breeding (MABB) in rice
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Creator Revathi P, Singh AK, Sundaram RM, Subba Rao LV and Neeraja CN
 
Subject Swarna
Restoration fertility
Marker assisted backcross breeding.
 
Description Not Available
The major constraints in hybrid rice breeding are availability of limited number of parental lines with specific desirable traits and lower frequency of restorers among elite breeding lines. The popular, high-yielding mega-rice variety Swarna, has been identified to be a partial restorer (as it has only one of major fertility restorer genes, Rf4) and hence cannot be utilized directly in the hybrid rice breeding. To convert the partial restorer to complete restorer, a cross was made between Swarna and a stable restorer KMR3R possessing Rf3 and Rf4 genes and developed BC1F5 and BC2F4 populations by marker-assisted back cross breeding (MABB). The SSR marker DRRM-RF3-10 linked to Rf3 gene located on chromosome 1, clearly distinguished restorers from partial restorers. All the improved lines of Swarna possessing Rf3 and Rf4 genes showed complete fertility restoration in test crosses with higher grain yield heterosis. Few rice hybrids developed by using converted restorers were evaluated in multi location testing under the All India Co-ordinated Rice Improvement Project (AICRIP). The results indicated that new rice hybrids expressed higher heterosis with matching grain quality attributes like Swarna. This study provides significantly novel and relevant restorers to enhance and economize future hybrid rice breeding programs.
Dept. of Biotechnology (Bio-Care), Govt of India grant number No. BT/Bio-CARe/02/268/2010-2011
 
Date 2021-08-04T06:00:08Z
2021-08-04T06:00:08Z
2020-01-24
 
Type Research Paper
 
Identifier Ponnuswamy, R., Singh, A.K., Raman, M.S. et al. Conversion of partial restorer Swarna into restorer by transferring fertility restorer Rf gene(s) through marker assisted back cross breeding (MABB) in rice. Sci Rep 10, 1101 (2020). https://doi.org/10.1038/s41598-020-58019-1
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http://krishi.icar.gov.in/jspui/handle/123456789/52837
 
Language English
 
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