Genetic Divergence Study in Different Rice (Oryza sativa L.) Genotypes under Irrigated and Drought Stress Condition

Thirty rice genotypes were evaluated to study genetic divergence under irrigated and drought stress conditions in randomized block design at Bagusala farm, M. S. Swaminathan School of Agriculture, CUTM, Odisha, during summer 2019. The main objective this experiment was identify reproductive phase tolerant through the effect on yield, yield attributing biochemical traits performance selected using Mahalanobis D2 statistics. Set 30 grouped five nine clusters situation. Under cluster-Ⅰ largest cluster with 22 followed by cluster-Ⅱ includes 5 cluster-Ⅲ, IV V each consisted only one genotype. condition, into different clusters, involving 20 having 3 whereas, IV, Ⅴ, Ⅵ, Ⅶ, Ⅷ Ⅸ recorded single maximum intra distances found cluster- Ⅱ (27111.9) (17587.7). Whereas, case had distance (21110.9) fallowed (17957.8). inter-cluster between Ⅴ (62310.8) cluster-Ⅳ (57656.0). In inter -Ⅱ Ⅶ (69865.5) (67848.9), (65239.2). irrigate highest manifestation towards exhibited chlorophyll plant 1000 grain weight, proline, number spikelets, carbohydrates, phenols, panicle length, flavonoids, filled grains, height tillers. stress, percentage contribution observed for Proline height, chlorophyll, 1000grain length tillers, while other trait like root did not contribute total divergence. Ⅰ, Ⅲ, namely MTU1010, MTU1075, MTU1224, RNR2465 Manipur black tolerance conditions. These can be used as donor parents development lines crop improvement programme.