EVALUATION OF EARLY MATURE ELITE RICE (Oryza sativa L.) HYBRIDS FOR YIELD AND YIELD COMPONENT TRAITS SUITED TO EASTERN PLAIN ZONE OF UTTAR PRADESH

RAJA SHEKAR REDDY GUNTAKA¹*, B. ANKIT KUMAR², K. SAIKRISHNA³, B. JALANDHAR RAM⁴, G. SURESH BABU^5
1Department of Genetics and Plant Breeding, Naini Agricultural Institute, Sam Higginbottom University of Agriculture Technology and Sciences, Prayagraj, 211007, India
²Department of Genetics and Plant Breeding, Naini Agricultural Institute, Sam Higginbottom University of Agriculture Technology and Sciences, Prayagraj, 211007, India
³Department of Genetics and Plant Breeding, Naini Agricultural Institute, Sam Higginbottom University of Agriculture Technology and Sciences, Prayagraj, 211007, India
⁴Department of Genetics and Plant Breeding, Naini Agricultural Institute, Sam Higginbottom University of Agriculture Technology and Sciences, Prayagraj, 211007, India
⁵Department of Genetics and Plant Breeding, Naini Agricultural Institute, Sam Higginbottom University of Agriculture Technology and Sciences, Prayagraj, 211007, India
* Corresponding Author : rajashekarreddyguntaka@gmail.com

Received : 03-12-2020     Accepted : 26-12-2020     Published : 30-12-2020
Volume : 12     Issue : 24       Pages : 10513 - 10516
Int J Agr Sci 12.24 (2020):10513-10516

Keywords : Genetic variability, Phenotypic coefficient of variation, Genotypic coefficient of variation, Genetic advance, Heritability, Correlation and Path analysis
Academic Editor : Dr Vipul N Kapadia, Dr Narendra Swaroop
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Department of Genetics and Plant Breeding, Naini Agricultural Institute, Sam Higginbottom University of Agriculture Technology and Sciences, Prayagraj, 211007, India
Author Contribution : All authors equally contributed

The investigation was accomplished using 19rice hybrids to assess genetic variability, correlation among yield attributing traits and also indirect and direct effects on yield. Analysis of variance revealed that all hybrids showed considerable variation which helps in identification of promising lines for future breeding programme. High level of estimates of PCV and GCV was documented for grain yield/plant, spikelets/ panicle, panicles/m2. High heritability was recorded for test weight, panicles/m2 and plant height. Genetic advance as percent mean was highest for plant height, flag lef length, panicles per hill, spikelets per panicle, panciles per square meter, biological yield, test weight and grain yield per plant. High levels of estimates for heritability along with genetic advance as percent of mean were documented in test weight, panicles/m2 and grain yield/plant. Correlation revealed that grain yield/plant showed positive significant affiliation for majority of the characters excluding spikelets/ panicle, flag leaf width and number of tillers/hill at phenotypic and genotypic levels. Days to maturity, plant height, days to 50% flowering, biological yield had positive direct effect on yield at phenotypic and genotypic level which indicates direct resolution of these traits that would lead for augmentation of grain yield in rice. The investigation concluded that IHRT-E- 3016, IHRT-E- 3006 and IHRT-E-3009 were identified as best hybrids for grain yield

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