Stability Parameters in 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."
Australian Journal of Crop Science, 2012
Multi-environmental tests were done for variety recommendation in the final stages of breeding programs for awareness of the importance of genotype × environment (GE) interactions. Sixteen genetically improved lentil genotypes and two cultivars were grown in 12 semiarid environments in Iran during 2007 to 2009. Results of combined ANOVA showed there were significant GE interactions and that genotypes varied significantly for seed yield. According to environmental variance and coefficient of variation statistics Type I, genotypes G7, G8 and G11 were the most stable genotypes while based on four parameters, which used GE magnitude, genotypes G5, G13 and G18 were the most stable. Results of the principal component (PC) analysis and correlation analysis of different stability concepts (Type I to Type IV) and seed yield indicated that only the Type II stability method would be useful for simultaneous selection for high yield and stability. The most favorable genotypes for a given environ...
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 ...
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 for different characters in variable environments in Lentil (Lens culinaris Medik.)
Electronic Journal of Plant Breeding, 2016
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?)
Journal of Plant Sciences, 2021
Lentil (Lens culinaris Medik.) as grain legumes it ranks seventh and it is a valuable source of dietary protein. Genotype x environment interaction is the main determinant in identifying genotypes with wider adaptation. A total of seventeen lentil genotypes was used in this study, where the evaluation was made at Sinana and Agarfa for three years 2016-2018. In this study it was revealed that significant variation among the genotypes, locations and genotypes by location interaction for mean grain yield was observed It is also observed in the AMMI analysis significant variation in the first two IPCA components. Accordingly, G1, G6, G13, G14, G16 and G17 gave grain yield above the grand mean. Furthermore, from the stability indicators like AMMI Stability Value: G4, G15 G8, G6, G10, had lower ASV value and showed stabile performance while G7, G11 and G1 had relatively lower ASV and showed moderately stable performance over the testing environments indicating wide adaptation. Furthermore, based on the Genotypes Selection Index (GSI) the most stable genotypes with a high grain yield were G1 and G15. Therefore, we have identified that these two genotypes as candidate genotypes to be verified for possible release in the highlands of bale, Sothern Ethiopia and similar agro-ecologies.
Agronomic Characteristics of Domestic and Abroad Originated Lentil Genotypes
Selcuk Journal of Agricultural and Food Sciences
This research was established under the ecological conditions of Nevşehir in the Central Anatolia Region, whereby lentil agriculture is practiced in Turkey. Research was carried out in order to reveal the important features of indigenous and exotic lentil genotypes which may be the basis for future breeding studies. A total of 220 domestic and foreign originated lentil genotypes and 4 varieties (Pul Mercimek, Yerli Kırmızı, Çağıl, Fırat-87) as standard were grown. Field trial was established on April 10, 2017 according to the Augmented trial design with 5 blocks. According to the results of the research, following ranges were determined; 50% flowering days 46.5-82.00 days, vegetation length 79.85-120.85 days, plant height 17.68-43.99 cm, number of pods per plant 9.21-440.62 pieces, weight of 1000 seed 12.92-78.31 g, seed yield 0.19-35.88 g plant-1 were determined. As a result; the lentil genotypes were found on the morphological and agricultural characteristics of our selected varieties. These superior genotypes can be used as material in breeding studies for future programs.
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.
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...