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Correlation studies in hybrid rice (Oryza sativa L.)

Four male and three female parents, their twelve hybrids along with three standard checks of rice (Oryza sativa L.) were evaluated during Kharif 2016 to study the nature and extent of correlation among yield and yield attributing characters viz., days to 50 per cent flowering, days to maturity, productive tillers plant-1 , plant height (cm), panicle length (cm), total spikelets panicle-1 , fertile spikelets panicle-1 , spikelet fertility (%), 1000 grain weight (g), grain yield plant-1 (g), straw yield plant-1 (g) and harvest index (%). The results revealed that grain yield plant-1 to be positively and significantly associated with days to 50 per cent flowering (0.988), days to maturity (0.998), productive tillers plant-1 (0.849), panicle length (0.978), total spikelets panicle-1 (0.806), fertile spikelets panicle-1 (0.979) and straw yield plant-1 (0.719) indicating importance of these traits as selection criteria in yield improvement programmes. | Int.J.Curr.Microbiol.App.Sci 2019 8 4 1158-1164 EXCELLENT PUBLISHERS International Journal of Current Microbiology and Applied Sciences ISSN 2319-7706 Volume 8 Number 04 2019 Journal homepage http www.ijcmas.com Original Research Article https doi.org 10.20546 ijcmas.2019.804.133 Correlation Studies in Hybrid Rice Oryza sativa L. B.S. Thorat1 R.L. Kunkerkar2 S.M. Raut3 S.S. Desai1 M.P. Gavai2 M.H. Keluskar2 and J.S. Dhekale4 1 Department Agriculture Botany 2RARS Karjat 3S.R.A JSW-Tpp Mango Project 4Agriculture Economics Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth Dapoli India Corresponding author ABSTRACT Keywords Hybrid Rice Oryza sativa L Yield attributing characters Article Info Accepted 10 March 2019 Available Online 10 April 2019 Four male and three female parents their twelve hybrids along with three standard checks of rice Oryza sativa L. were evaluated during Kharif 2016 to study the nature and extent of correlation among yield and yield attributing characters viz. days to 50 per cent flowering days to maturity productive tillers plant-1 plant height cm panicle length cm total spikelets panicle-1 fertile spikelets panicle-1 spikelet fertility 1000 grain weight g grain yield plant-1 g straw yield plant-1 g and harvest index . The results revealed that grain yield plant-1 to be positively and significantly associated with days to 50 per cent flowering 0.988 days to maturity 0.998 productive tillers plant-1 0.849 panicle length 0.978 total spikelets panicle-1 0.806 fertile spikelets panicle-1 0.979 and straw yield plant-1 0.719 indicating importance of these traits as selection criteria in yield improvement programmes. Introduction Rice Oryza sativa L. is staple food of more than 60 of Indian population. It accounts for about 43 of total food grain production and 46 of total cereal production in the country. Rice occupies pivotal place in Indian Agriculture. In order to meet the domestic demand of the increasing population the present day production of .