GENETIC DIVERGENCE AND CHARACTER ASSOCIATION IN SCENTED RICE (Oryza sativa L.)

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dc.contributor.advisorSURENDER RAJU, CH.
dc.contributor.authorANJALI, K.
dc.date.accessioned2016-07-28T13:15:35Z
dc.date.available2016-07-28T13:15:35Z
dc.date.issued2009
dc.description.abstractThe investigation conducted with fifty rice genotypes comprising both Basmati and aromatic short grain types revealed significant differences among the genotypes for the yield, its components and grain quality characteristics. High estimates of GCV were observed for productive tillers per plant, filled grains per panicle whereas, the estimates for panicle length, days to 50 percent flowering, kernel breadth and kernel elongation ratio were low. With respect to the remaining traits the estimates were moderate. The yield components, viz., productive tillers per plant and filled grains per panicle which exhibited high heritability coupled with high genetic advance as percent of mean were under the influence of additive gene action. The remaining traits were mostly under the influence of non additive gene effects as they recorded low to moderate estimates of genetic advance. Based on the relative magnitude of D2 values, the genotypes were grouped into eight clusters. Among all the clusters, cluster IV was the largest one with 12 genotypes, whereas cluster VIII had only one genotype (Pusa 1121). The cluster VIII was separated by higher genetic distance from cluster III and II followed by cluster V. Cluster VIII with only one genotype (Pusa 1121) exhibited highest mean value for kernel length, kernel length after cooking and 1000- grain weight. Cluster VII possessed highest mean value for kernel length, L/B ratio and kernel length after cooking due to inclusion of most promising genotypes like Pusa Sugandh-3, Sugandhamathi and Basmati- 386 which are known for good quality traits. Cluster V containing genotypes, viz., Gahansal, Chiitti mutyalu and Godavari Isukalu exhibited good performance for most of the characters and characterised by more number of grains per panicle. Based on the inter cluster distances and other desirable attributes, crossing between Pusa 1121, JGL 15336, RNR 2465, Badsha bhog, NDR 6242, Gahansal and Chitti mutyalu is suggested for further improvement. The study on correlations and path analysis indicated that emphasis should be given for selection of plants possessing higher number of grains per panicle with increased panicle length and optimum plant height so as to maintain higher harvest index to develop high yielding varieties for rainy ( kharif ) season.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/70149
dc.language.isoenen_US
dc.publisherACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY RAJENDRANAGAR, HYDERABADen_US
dc.relation.ispartofseriesD8501;
dc.subGenetics and Plant Breeding
dc.subjectGENETIC, DIVERGENCE, CHARACTER, ASSOCIATION, SCENTED, RICEen_US
dc.these.typeM.Sc
dc.titleGENETIC DIVERGENCE AND CHARACTER ASSOCIATION IN SCENTED RICE (Oryza sativa L.)en_US
dc.typeThesisen_US
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