Minakshi Rathia1*, Sonali Kar2, R.R. Kanwar3, N.C. Mandavi4, Vinay Dansena5 and
Geetu Thakur6
1,2,3Department of Genetics and Plant Breeding, S.G. College of Agriculture and Research Station, Kumharawand, Jagdalpur, Bastar 494001 (C.G.)
4Department of Entomology S.G. College of Agriculture and Research Station Kumharawand, Jagdalpur, Bastar 494001 (C.G.)
5Department of Floriculture and Landscape, Krantikari Debridhur College of Horticulture and Research Station, Jagdalpur, Bastar 494001 (C.G.)
6Department of Genetics and Plant Breeding, S.G. College of Agriculture and Research Station, Kumharawand, Jagdalpur, Bastar 494001 (C.G.)
Email- rathiaminakshi05@gmail.com
Received-25.09.2024, Revised-13.10.2024, Accepted-21.11.2024
Abstract: Seedling vigour is important agronomical traits and contributer to subsequent tillering quality and yield of rice. Crop stand is dependent on the seedling vigour. For higher grain yield, good crop stand is equally important along with high yield potential. Therefore the present study was carried out to explore the genetic variability and correlation among 11 seedling vigour related traits in 33 rice genotypes including 3 checks viz. Narendra 359, Karma mahsuri and IGKVR 1244, at S.G. College of Agriculture and Research Station, Jagdalpur ( C.G.). High heritability was found for all the 11 seedling vigour traits. Highest seedling vigour-I at 14th day was recorded for Narendra 359 followed by R2699-31-1, R2326-108-1-61-1 and R2737-25-1. High heritability coupled with high GAM was recorded for root/shoot ratio at 7th day, shoot length at 14th day, shoot length at 7th day and root/shoot ratio at 14th day. The findings from the character association analysis revealed that seedling vigour index-I at 14th day showed high positive significant association with characters like germination percentage, shoot length at 14th day, root length at 14th day and seedling height at 14th day. Further, these promising genotypes can be used in future breeding programme.
Keywords: Rice, Seedling vigour, Genetic Variability, Heritability, Correlation analysis
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