International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2016, Volume : 4, Issue : 2
First page : (250) Last page : (255)
Article doi: http://dx.doi.org/10.18782/2320-7051.2245

Estimation of Variability for Grain Yield and Quality Traits in Rice (Oryza sativa L.)

K. Rukmini Devi*, K. Parimala, V. Venkanna, N. Lingaiah, Y. Hari and B. Satish Chandra
Professor Jayashankar Telangana State Agricultural University
Regional Agricultural Research Station, Mulugu Road-506 007,Warangal, Telangana, India
*Corresponding Author E-mail: rukminirars@gmail.com
Received: 19.03.2016  |  Revised: 28.03.2016   |  Accepted: 5.04.2016  

Abstract
Analysis of variance revealed highly significant differences among 27 genotypes for all the yield components and most of the kernel quality traits except hulling percent, volume expansion ratio and water uptake indicating that enough variability is present in the studied material.  The magnitude of difference between PCV and GCV was less for the traits indicating little influence of environment. The higher estimates of PCV and GCV were observed for yield per plant (42.42;42.04) and filled seeds per panicle (34.67;33.19) indicates possibility of genetic improvement through direct selection for these traits, while hulling percent, milling percent, kernel elongation ratio, day to 50% flowering, panicle length, kernel length and kernel width showed low PCV and GCV values indicating the need for creation of variability by hybridization or mutation followed by selection.
High heritability in broad sense and high genetic advance as percent of mean exhibited by the traits, effective tillers (88.8; 30.2), plant height (96.0; 35.3), flag leaf length (84.0 ; 32.8), filled seeds per panicle (96.0;68.7) test weight ( 96.0; 39.1), yield per plant (98.0;68.7) ,head rice recovery (94.0; 27.7) and length/breadth ratio (93.0 ; 20.4) indicating preponderance of additive gene action, which provide good scope for further improvement by selection.

Key words: Genetic Variability, Heritability, Grain Yield, Quality Traits, Rice

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

Cite this article: Rukmini, K.D., Parimala, K., Venkanna, V., Lingaiah, N., Hari, Y. and Chandra, B.S., Estimation of  Variability  for  Grain  Yield and Quality  Traits in Rice (Oryza sativa L.), Int. J. Pure App. Biosci.4(2): 250-255 (2016). doi: http://dx.doi.org/10.18782/2320-7051.2245