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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2019, Volume : 7, Issue : 5
First page : (237) Last page : (245)
Article doi: : http://dx.doi.org/10.18782/2320-7051.7494

Assessment of Genetic Variability for Qualitative and Quantitative Traits in Local Rice Cultivars of Gudalur Valley of the Nilgiris

D. Kumaresan* and S. Manonmani
Hybrid Rice evaluation Centre, Tamil Nadu Agricultural University,
Gudalur-643 212, The Nilgiris (Dt.)
*Corresponding Author E-mail: dkumaresan1@rediffmail.com
Received: 13.05.2019  |  Revised: 25.06.2019   |  Accepted: 8.07.2019  

 ABSTRACT

In the present study, characterization of 21 local rice genotypes was carried out for  16 DUS characters. The leaf  and leaf sheath anthocyanin coloration was absent in all the genotypes.  A total of eight traits viz., leaf pubescence of blade surface, leaf length of blade, leaf width of blade, flag leaf, panicle awns, panicle presence of secondary branching, panicle secondary branching and panicle exertion were dimorphic. Three traits basal leaf sheath colour, leaf intensity of green colour, culm attitude were found to be trimorphic. Remaining three traits namely flag leaf attitude of blade, panicle curvature of main axis and panicle attitude of branches were found to be tetramorphic. The genotype mundamaranellu was found to be distinct for erect culm, erect flag leaf and presence of awns and these genotypes can be  used as donor for rice breeding program. The cultivars Thondi and mullampunchan (106 days) were found to be early on days to 50% flowering among all the genotypes evaluated. All genotypes exhibited significant differences for eight quantitative traits. The high PCV and GCV was recorded for plant height, number of productive tillers and single plant yield. The highest heritability and high genetic advance as per cent of mean was observed in  plant height, number of panicles per plant, number of productive tillers, 1000grain weight, single plant yield  and these characters could be further  improved by following simple selection procedure.

Keywords: Local cultivar, Characterization, Variability, Morphological  traits, Rice.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Kumaresan, D. & Manonmani, S. (2019). Assessment of Genetic Variability for Qualitative and Quantitative Traits in Local Rice Cultivars of Gudalur Valley of the Nilgiris, Ind. J. Pure App. Biosci.7(5), 237-245. doi: http://dx.doi.org/10.18782/2320-7051.7494