Divergent analysis in rice under sodicity

Abstract

In the present investigation, 31 genotypes were subjected to pooled analysis of variance for ten characters. The analysis of variance for stability revealed that the genotypes were significant for all the traits. An attempt was made to assess the mean performance in 31 rice genotypes for 10 quantitative traits. Among the 31 genotypes measured, high mean value for alkali injury score at vegetative stage were recorded by the following genotypes CR 2218-41-2-1-1-S-B-1, PNL-4-35-20-4-1-4,CSR 12-B 19, CST 7-1, these genotypes shows high mean performance for some of the traits viz., alkali injury score at reproductive stage, plant height, no. of tillers per panicle, no. of filled grains per panicle.CSR-36, CSR-2K-262, CR 2815-4-26-1-S-3-1-1, CARI Dhan 4,CSR-12-19 showed high mean value for 1000 seed weight whereas RP-4353-MSC-38-43-6-2-4-3, CR 2815-4-23-8-5-4-2-1, CR 2815-4-26-1-S-3-1-1, TNAU RICE TRY 3 shows greater mean value for spikelet fertility. These genotypes would be used in hybridization programme. Highest mean value for days to 50% flowering recorded in CSR 12-B -23, CR 2218-41-2-1-1-S-B-1, CR 2839-1S-13-1-5-B-1, CSR 27, CST 7-1 whereas NDRK 11-1, RP 4353-MSC-38-43-6-2-4-3,PNL 1-1-1-6-7-1, NDRK 11-7, shows lowest mean value. The genotypes showed medium duration was utilized in breeding programme which was highly preferred by the breeders as well as by the farmers. The highest mean value for plant height were measured by the genotypes CSR-2K-219, NDRK 11-3, CSR (D) 7-0-4, CSR-12-B-18, CSR-12-B-19, CST 7-1. Genotypes such as CR 2840-1-3-3B-S-B, NDRK 11-5, CARI Dhan 4, Amalmana showed intermediate mean value. This reveals that genotypes with height would be favored by the researchers. Hence these genotypes can be exploited for further breeding programme.