Assessment of variability and tolerance indices for moisture stress in fenugreek (Trigonella foenum-graecum L.)
Loading...
Date
2020
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
College of Horticulture and Forestry, Jhalawar
Abstract
Thirty genotypes of fenugreek were evaluated in normal and limited irrigation conditions during rabi season 2019-20 in RBD with three replications, to estimate the variability, characters association and stress tolerance indices viz., TOL, SSI, STI, MP, GMP, YI, SSPI, and MSTI to screen the genotype for moisture stress tolerance.
The pooled ANOVA revealed significant difference among the environment, genotype and G x E interaction for all the characters under study except days to 50 per cent flowering, days to maturity and seed yield per plant, indicating non-linear response of genotypes to the changes in environments. Individual ANOVA indicated existence of significant variability in genotypes for all the characters in both the environments.
In general, the PCV were found higher than the corresponding GCV for all the characters studied, which indicated effect of environments on the characters expression. In both the environments high estimated of GCV and PCV were observed for seed yield per plant, number of branches per plant and number of pods per plant and proline content. The estimate of broad sense heritability was high for proline content, test weight, seed yield per plant, number of pods per plant and pod length and genetic advance as percentage of mean was high for proline content, seed yield per plant and number of branches per plant in both the environments. High estimate of GCV, PCV, heritability, GA, and genetic advance as percentage of mean were found seed yield per plant, proline content, number of branches per plant and number of pos per plant in both the environments.
The seed yield per plant was found to be positively and significantly associated with number of branches per plant, number of pods per plant, pod length and number of seeds per pod in both the irrigation conditions.
Based upon the mean seed yield and various stress tolerance indices, genotypes RMt-1, Sikar local, Nagour local-1 and MP local-1, were screen tolerant to water deficit conditions and GM-1, RMt-143 and RMt-303 were screen high yield in both irrigation conditions with higher reduction in water deficit condition. Hence, these genotypes may be used in further breeding programmes.