Stability for different characters in variable environments in Lentil (Lens culinaris Medik.)
12 Sep 2016-Electronic Journal of Plant Breeding (EJPB, ISPB, CPBG - Tamil Nadu Agricultural University)-Vol. 7, Iss: 2, pp 235-252
TL;DR: Correlation among stability estimate revealed that there were high significant correlations between seed yield and pods per plant and these findings can be very useful in lentil breeding programme related to heat tolerance.
Abstract: Present research work was undertaken to estimate the genotype and environment interactions of 48 lentil genotypes across different environments, to identify the suitable genotypes for heat tolerance in lentil. Stability and adaptation through different stability parameters and performance traits of 48 lentil genotypes were studied. Genotypes IC201655 and IC201786 showed high seed yield and pods/plant stability. The genotype Asha recorded general adaptation showing above population mean for seed yield/plant, 100 seed weight and harvest index. Genotype Howrah local 2 recorded such trend for seed yield and harvest index. Howrah local 2 also recorded days to maturity close to population mean. Genotype North 24 Parganas local recorded such trend for harvest index and 100 seed weight (above population mean) and days to maturity (below population mean). Genotype IC201710 would likely to perform well under favourable situation for seed yield/plant, pods/plant and harvest index. Correlation among stability estimate revealed that there were high significant correlations between seed yield and pods per plant. Therefore if pods per plant are stable then seed yield will also be stable. These findings can be very useful in lentil breeding programme related to heat tolerance.(based on what?)
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TL;DR: The model, Yij = μ1 + β1Ij + δij, defines stability parameters that may be used to describe the performance of a variety over a series of environments to see whether genetic differences could be detected.
Abstract: The model, Yij = μ1 + β1Ij + δij, defines stability parameters that may be used to describe the performance of a variety over a series of environments. Yij is the variety mean of the ith variety at the jth environment, µ1 is the ith variety mean over all environments, β1 is the regression coefficient that measures the response of the ith variety to varying environments, δij is the deviation from regression of the ith variety at the jth environment, and Ij is the environmental index.
The data from two single-cross diallels and a set of 3-way crosses were examined to see whether genetic differences could be detected. Genetic differences among lines were indicated for the regression of the lines on the environmental index with no evidence of nonadditive gene action. The estimates of the squared deviations from regression for many hybrids were near zero, whereas extremely large estimates were obtained for other hybrids.
3,754 citations
"Stability for different characters ..." refers methods in this paper
...Stability parameters were estimated following the Eberhart and Russell model (1966).Regression coefficient and deviation from regression were used as stability measure....
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TL;DR: Article de synthese sur les methodes d'analyse de la stabilite de caracteres genetiques, notamment le rendement en amelioration des plantes.
Abstract: Article de synthese sur les methodes d'analyse de la stabilite de caracteres genetiques, notamment le rendement en amelioration des plantes
1,009 citations
"Stability for different characters ..." refers background in this paper
...They can be grouped as low stability genotypes as suggested by Becker and Leon, 1988....
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