Association in indica-japonica Derived NPT Lines of Rice and their Implication in Selection Koutu G. K., Shrivastava Arpita*, Singh S. K., Mishra D. K. Department of Plant Breeding and Genetics, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh, 482004 *email: arpita.jnkvv@gmail.com
Online published on 2 January, 2017. Abstract An investigation was carried out using 30 JNPT lines of rice to estimate the character association and path coefficient among the twenty one yield attributing traits which were grown under RBD during the kharif season of 2014. Seed yield plant−1 exhibited positive and significant association with panicle weight plant−1 followed by harvest index, effective tillers plant−1, biological yield plant−1, tillers plant−1, panicle index, days to fifty percent flowering, days to heading, filled spikelets panicle−1, days to maturity, spikelet density and total spikelets panicle−1. The findings revealed that, these characters should given prime consideration in formulation of selection criteria for the genetic improvement in present as well as future breeding materials. Amongst all the independent characters, days to maturity exhibited maximum positive direct effect on seed yield plant−1 followed by tillers plant−1, culm length, panicle weight plant−1, harvest index, biological yield plant−1, panicle index, total spikelets panicle−1, seed length, panicle length, days to heading and filled spikelets panicle−1. These characters reflect true relationship between them and selection can be practiced for for such characters in order to improve the seed yield. Top Keywords Correlation coefficient, JNPT lines, Path coefficient. Top |