Using different aspects of stability concepts for interpreting genotype by environment interaction of some lentil genotypes (original) (raw)
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Genotype x environment interaction and stability analysis for yield and its components in lentil
Genotype x environment interaction and stability analysis for yield and its components in lentil, 2013
"The objective of this investigation is to determine the performance and stability of 24 lentil (Lens culinaris Medik.) genotypes under a wide range of variable environments. The regression model and ecovalence (Wi) were used to analyze the response of the lentil genotypes to variable environmental conditions for yield and some of its components in six experiments in three seasons under two locations. Results indicated that both environmental conditions (E) and studied genotypic accessions (G) influenced significantly on the performance of yield and yield components. Moreover, the performance of genotypes varied highly significantly from environment to another for all traits, except 100 seed weight as proved by significance of G x E. Therefore, further stability analyses were performed for traits that recorded significant G x E. Four genotypes were stable for pods plant-1 either measured by Wi or S2 d. For this trait, all genotypes were non responsive to environmental conditions except PL81-17 which may behave positively to pod bearing conditions. For seed yield plant-1 only Sinai 1 was significantly unstable measured by Wi and S2 d, respectively. The significance of b's for seed yield feddan-1 proved that only 3 genotypes were responsive to environments. Two of them (XG88-17 and Giza 51) may behave better under good environments and the third (Giza 4) may be recommended under poor ones. It may be concluded in lentil breeding programs, which the performance of genotypes under each location should be evaluated firstly and those reliable ones will be tested for stability across various environmental conditions prior to recommendations."
Stability Parameters in Lentil Genotypes
El-Cezeri Fen ve Mühendislik Dergisi, 2018
Total 20 lentil genotypes were examined for assessment stability in different environments for grain yield in Southeastern Anatolia of Turkey. Genotypes and genotypes x environments interactions were significant for grain yield. The regression coefficient, deviations of the regression coefficients, coefficient of variation, ecovalence and stability variance were computed for genotypes. Genotypes FLIP2011-26L, ILL10975 and Firat 87 with a high stability (b) and high grain yield would be adapted to a wide range of growing conditions in a given production area with above average yield. The stability variance (σ2i) revealed that the lentil genotypes Kafkas, Cagil and FLIP2009-55L had the smallest variance across the environments, while the genotype Firat 87 had the largest stability variance (σ2i).
Genotype x environment interaction and stability analysis in lentil (Lens culinaris Medik.)
International Journal of Environment, Agriculture and Biotechnology, 2016
Genotype x environment interaction was evaluated under eight environments during lentil growing season of 2013/14 and 2014/15 for grain yield and their component characters of twenty one promising genotypes selected from previous trial of lentil. The variances estimated due genotype, environment and genotype x environment interaction were found to be different significantly for all the characters studies indicating distinct nature of genotypes, environments and genotype x environment interactions in phenotypic expression. High estimates of sum of square (SS) for all the traits are expressed by environment. The explained percentage of grain yield by environment, genotype and genotype environment interaction were 54.86, 19.86 and 25.28 respectively. To find out the effects of GEI on grain yield and its attributing characters, the data were subjected to Additive Main effects and Multiplicative Interaction (AMMI) .The results finally indicated that AMMI stability value and AMMI biplot are informative methods to explore stability and adaptation pattern of genotypes in practical plant breeding and in subsequent variety recommendations. In addition, finding mega environments help to identify the most suitable lentil cultivars that can be recommended for areas within the mega-environment in either one or more test locations. The genotype RL39 (1.254 mt ha-1) and LL10071 (1.196 mt ha-1) produced higher grain yield) than all other genotypes over the environments and performed better at most of the places. The genotypes ,F2003-49L, Arun, 39-S-66L, RL-44, and ILL10071 were found to be comparatively stable as their performance were hardly affected by the G x E interaction and thus would perform well across a wide range of environments. These genotypes produced higher grain yield than all checks.
Stability Analysis for Seed Yield in Lentils (Lens Culinaris MEDIK.)
2011
The development of genotypes, which can be adapted to a wide range of diversified environment, is the ultimate goal of plant breeders in a crop improvement program. In this study, linear regression were used to analyze the response to environmental conditions of lentil (Lens culinaris Medik) genotypes taking as independent variable (X) the average yield of all lentil genotypes in four experiences (two locations and two years). Yield stability was assessed by determining the coefficients of variation. Seven lentil genotypes were tested for seed yield in two locations of Southern Romania environmental conditions during 2008 and 2009 growing seasons. On the basis of the regression coefficient g enotypes Idlib-1, Idlib-2, Idlib-3, Hurani and Kurdi had general adaptability to over environments and genotypes Idlib-4 and Oana were suitable for favorable environments. The result of coefficient of variation indicated that the same genotypes were more stable. Among these Idlib-3 genotype was ...
Agronomy
Lentil (Lens culinaris Medik.) is a popular legume crop in the Mediterranean region, widely grown for its nutritious seeds and improving soil fertility. Lentil yield is a critical and challenging trait for crop genetic improvement because it is influenced by various factors that have detrimental effects on seed yields and seed quality traits. This research was carried out in Italy between 2017 and 2019 to identify high-performing stable genotypes presenting multiple desirable traits and to assess the seed quality of 13 lentil accessions in the field. According to the results of the multi-trait stability index (MTSI), (1) only three accessions (Altamura, Easton, and Caltagirone) fared better in various environmental conditions, and (2) the selected accessions had strength toward seed yield (SY), above-ground biomass (AGB), and 1000-seed weight (THS). The genotype × environment interaction (GEI) effects were highly significant for all traits. During the third growing season, most lent...
2021
Lentil is a versatile and profitable pulse crop with high nutritional food and feed values. The objectives of the study were to determine suitable locations for high yield and quality in terms of production and/or breeding, and to identify promising genotypes. For this reason, five lentil genotypes were evaluated in a multi-location network consisting of ten diverse sites for two consecutive growing seasons, for seed yield (SY), other agronomic traits, crude protein (CP), cooking time (CT) and crude protein yield (CPY). A significant diversification and specialization of the locations was identified with regards to SY, CP, CT and CPY. Different locations showed optimal values for each trait. Locations E4 and E3, followed by E10, were “ideal” for SY; locations E1, E3 and E7 were ideal for high CP; and the “ideal” locations for CT were E3 and E5, followed by E2. Therefore, the scope of the cultivation determined the optimum locations for lentil cultivation. The GGE-biplot analysis rev...
Genotype × Environment interaction studies in lentil under Afghanistan environments
2021
Lentil (Lens culinaris Medik. culinaris) is an important pulse crop causative to nutrition and food security of people in Afghanistan. Genotype by environment interaction (GEI) is one of the major factors restraining the efficiency of any breeding program. This study consisted of two lentil yield trials conducted in alpha design with two or three replicates at three locations for two years (2014-2015 and 2015-2016). Genotypic differences were significant (P<0.05) in all the environments. Genotype × location interactions were found significant (P<0.01) in each year for LIEN-LS and LIEN-SS trials. There were significant genotype × year interactions of crossover type. For LIEN-LS genetic materials, Herat and Mazar formed a mega-environment based on responses in 2015 and 2016. High yielding genotypes with specific adaptation to Mazar and Herat environment were LG16 (FLIP2012-21L) in 2015 and LG24 (FLIP2013-3L) in 2016, whereas LG30 (FLIP2013-20L) was identified as high yielding wi...
Genetic competition of lentil genotypes in different environmental condition
2018
An experiment to evaluate performance of newly developed candidate lines of lentil (Lens culinaris) was conducted at Krishi Vigyan Kendra, Saraiya during 2013-14, 2014-15 and 2015-16. Genetic variability and Heritability were evaluated for yield and its attributing traits. The combined analysis of variance indicated that genotype and genotype x environment interaction showed significant mean sum of squares for all the character in the entire environment. The genotype PL-6 was earliest to reach days to 50% flowering. The phenotypic coefficient of variance (PCV) was significantly higher than genotypic coefficient of variance (GCV). High heritability with low genetic advance was observed for most of the traits indicating the presence of additive gene effect for these traits.
Agriculture Journal IJOEAR, 2020
Lentil (Lens culinaris Medik. culinaris) is a cool season food legume contains the high quality of proteins and minerals. Selecting genotypes for high mean yield and yield stability has been a challenge for lentil breeders. The complexities of genotype × environment interaction (GEI) make selection difficult to identify the best performing and most stable genotypes. Therefore, this study was carried out to apply a GGE biplot and AMMI analysis model to evaluate the magnitude of the effect of GE interaction on grain yield of 25 lentil accessions at three environments during the year of 2016 and 2017 seasons in alpha-lattice design (5x5) with three locations and to evaluate relationships between test environments for identification of favorable genotypes for lentil production areas. Combined pooled mean analysis of variance for grain yield tested at three environments over the two subsequent years 2016 and 2017 showed that highly significant differences in genotypes, environment and G x E interaction effect indicating the possibility of selection for stable accessions. The stability of the assessed genotypes using some stability statistics derived from three types of statistical concepts (variance and regression analyses), AMMI (additive main effect and multiplicative interaction) analysis and GGE biplot (genotype main effects and genotype-by-environment interaction effects) models were applied to obtain good understanding of the interrelationship and overlapping among the used stability statistics. Research results showed that lentil accession WBL-77 (1451 kg ha-1) , RL-79(1446 kg ha-1) and PL-4(1429 kg ha-1) were the best performer and well adopted across the environments and over the years. AMMI analysis of variance for lentil grain yield (tha-1) of lentil accessions tested at three environments over the years showed that 80.71% of the total sum of squares was attributed to environmental effects, only 8.38 % to genotypic effects and 10.90% to genotype × environment interaction effects. The partitioning of GGE sum of squares through the GGE biplot analysis showed that PC1and PC2 accounted 74.75%, and 25.24% of GGE sum of squares respectively over the years. Accessions ILL8006, RL-6, Shital, ILL3490 and simal were more close to the center point and indicated that stable across the environments. In another words, the genotypes which have low stability value (ASV) is said to be stable and the breeder chose the stable genotypes along with grain yield above the mean grand yield. In this experiment accessions RL-6(G-2) ranked 1st stability (ASV-0.53) followed by Simal (ASV-2.05), ILL-3490 (ASV-2.42) and Shital (ASV-2.72) and suitable for all environment. Keywords-Stability parameters, lentil, GGE biplot, AMMI-additive main effects and multiplicative interaction; ASV-AMMI stability value.
International Journal of Chemical Studies, 2020
In qualitative assessment of ten lentil genotypes, the physiological performances of seed under storage condition were undertaken that may achieve appropriate seed production with strategic breeding to advance resourceful strains. The statistical design, CRD was followed for those seed traits maintaining the various durations and containers at ambient storage condition. The genotypesWBL77 and PRECOZ showed prominence with wide range of variable expression among genotypes for the characters though an inconsistency was also observed. In storage techniques, the Plastic container specified most encouraging in significant manner by reducing the deterioration rate and the stage M1 (0 months) was noticeably superior in progression of storage. The minimum deviation in GCV and PCV recognized the genetic influence of considerable seed traits that was reinforced by higher value ofheritability (H 2 %) excepting ECvalue. The genetic advance (GA%) indicated the influence of additive gene for all characters excepting seed germination. In correlation matrix, the positive significant among all parameters and negative relationship only with EC were strictly followed indicating usefulness of these characters for good seed. Therefore, the considerable parameters may be considered in strain selection for quality seed production of Lentil.