Assessment of Correlation of Morphological, and Physiological Traits with Seed Yield in Rice (Oryza sativa L.)

Abstract

Thirty-six rice varieties were evaluated at the instructional farm, College of Agriculture, IGKV, Raipur (C.G.) during the years 2021-22 and 2022-23 under the Kharif season. The correlation studies with different morphological, and physiological traits were carried out and suggested that traits e.g. number of tillers, productive tiller, number of leaves, total dry weight, SCMR value of flag leaf, second leaf, third leaf, net assimilation rate, specific leaf weight, light interception, Harvest index, panicle weight plant-1, total grain panicle-1, fertile grains panicle-1, number of primary branches panicle-1, and number of fertile grains on primary branch content were positively correlated at p<0.001 significant level, while Flag leaf length, angle of top three leaves, specific leaf area, sterile grains panicle-1, number of sterile grains on ttprimary branch, and number of sterile grains on the secondary branch were negatively associated with grain yield during both the years. Hence, these traits could be considered as the principal traits. Thus, correlation analysis suggested that these parameters contribute to the seed yield of rice.