ANALYSIS OF GENETIC DIVERSITY IN RETENTION OF QUALITY TRAITS OF RICE UNDER KONKAN COASTAL CONDITIONS (Oryza sativa L.)

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dc.contributor.advisorKunkerkar, R. L.
dc.contributor.authorPARDESHI, PRAJWAL PRADEEPSINGH
dc.contributor.otherDESAI, S.S.
dc.contributor.otherBedse, T. J.
dc.contributor.otherMane, A. V.
dc.date.accessioned2022-12-20T04:19:56Z
dc.date.available2022-12-20T04:19:56Z
dc.date.issued2021-06-30
dc.description.abstractThe present investigation entitled, “Analysis of genetic diversity in retention of quality traits of rice under konkan coastal conditions (Oryza sativa. L) was undertaken to asses genetic variability, correlation, path analysis and genetic diversity in 24 genotypes of rice in Randomized Block Design with three replications at Educational and Research farm, Regional Agricultural Research Station, Karjat, Dist.Raigad, Maharashtra during kharif 2020. The analysis of variance revealed significant variation among the genotypes for all the characters studied. The maximum range of variation was observed for the characters, Number of filled spikelets per per panicle, Number of spikelets per panicle, Water uptake, Plant height, Gel consistency, Days to maturity and Days to 50% flowering. Higher GCV, PCV, heritability and genetic advance as per cent mean were recorded for Test weight, Number of filled spikelets per panicle, Grain yield per plant, Straw yield per plant and Number of filled spikelets per panicle, indicating that simple selection could be practiced for improving these traits. Genotype Karjat-3 demonstrate the maximum Grain yield per plant among all the genotypes. High genotypic coefficient of variation was observed for Number of spikelets per panicle, Test weight, Number of filled spikelets per panicle, Grain yield per plant, Amylose content, L:B ratio, Straw yield per plant, Days to maturity, Gel consistency, Days to 50% flowering and Spikelet fertility. These traits also possess high heritability with high genetic advance hence the selection for these traits was effective. Association analysis indicated that there was positive correlation among Grain yield per plant with Straw yield per plant, Grain breadth and Harvest index while, the Test weight also showed highest highly significant positive correlation with Grain breadth followed by Grain yield per plant, Straw yield per plant and Volume expansion ratio. Test weight had significant positive correlation with Milling percentage followed by Hulling percentage and Harvest index. Selection for these traits can be effectively improve Grain yield. Among the yield components, Genotypic and phenotypic path coefficient analysis showed that Straw yield per plant, Test weight, Grain breadth Harvest Index and Panicle length had the highest positive direct effect on Grain yield per plant where as Grain length and Elongation ratio also found to positively significant for yield. Among these characters, Number of productive tillers per plant possessed both positive association and high direct effects. Hence, selection for this character could bring improvement in yield and yield components. The 24 genotypes were grouped into 5 different clusters on the basis of magnitude of D² values evaluated by Mahalanobis D² analysis. The inter–cluster distance was high between cluster IV and Cluster V, there by indicated wide range of variation among the clusters formed. Hence, the genotypes underlying in these clusters could be selected for breeding programme to obtain potential sergeants. Genotypes OR(CZ)-64, R 2054-147-2-104-1, CR 3663-261- 8-4, R1915-115-1-88-1 and JDP-S-38 was found to be aromatic rice with other desirable trait such as higher Number of tillers per plant and Straw yield per plant. These genotypes can be utilized in breeding programmes in future.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810190685
dc.keywordsAGRI-GENETICS & PLANT BREEDINGen_US
dc.language.isoEnglishen_US
dc.pages184en_US
dc.publisherDr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Dapoli.en_US
dc.subGenetics and Plant Breedingen_US
dc.themeANALYSIS OF GENETIC DIVERSITY IN RETENTION OF QUALITY TRAITS OF RICE UNDER KONKAN COASTAL CONDITIONS (Oryza sativa L.)en_US
dc.these.typeM.Scen_US
dc.titleANALYSIS OF GENETIC DIVERSITY IN RETENTION OF QUALITY TRAITS OF RICE UNDER KONKAN COASTAL CONDITIONS (Oryza sativa L.)en_US
dc.typeThesisen_US
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