Character association of seed yield and its components in some lentil (Lens culinaris Medik.) genotypes under normal and late sown condition
20 Dec 2017-Legume Research (Agricultural Research Communication Center)-Vol. 41, Iss: 5, pp 693-701
TL;DR: It was revealed that pods per plant showed consistently positive direct effect on seed yield/plant for both sowing conditions, so this character may be considered for yield improvement.
Abstract: Character association in forty eight genotypes of lentil was studied for nine different agro-morphological characters in normal and late sown conditions. Normal sown condition was taken into consideration as optimum environment and late sown as heat stressed environment. The correlation study revealed consistent positive significant character association (at genotypic and phenotypic levels) of pods per plant with seed yield per plant in both sowing conditions. So this character may be considered for yield improvement. From path coefficient analysis study it was revealed that pods per plant showed consistently positive direct effect on seed yield/plant for both sowing conditions.
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31 Jan 2010
TL;DR: The genetic parameters, character association and path coefficient analysis between yield and yield contributing characters of 25 lentil genotypes were studied during 2007 - 2008 at Kisan (PG) College, Simbhaoil.
Abstract: The genetic parameters, character association and path coefficient analysis between yield and yield contributing characters of 25 lentil genotypes were studied during 2007 - 2008 at Kisan (PG) College, Simbhaoil. The genotypes exhibited a wide range of variability for all the traits studied. High heritability accompained by moderate to high GCV and genetic gain were observed for number of pods plant-1, number of branches plant-1, 100 seed weight, seed yield plant-1 and harvest index. Correlation studies indicated that number of pods plant-1, biological yield and harvest index were positively and significantly correlated with seed yield at both phenotypic and genotypic levels. Path coefficient analysis showed that harvest index, biological yield and number of pods plant-1 showed maximum and positive direct effect on seed yield.
Key words: Correlation, path coefficient analysis, genetic variability, lentil.
38 citations
"Character association of seed yield..." refers background in this paper
...Positive direct effect of pods per plant on seed yield was also observed by Sarwar et al., (2013), Mekonnen et al.,(2014), Sharma et al., (2014),Tyagi and Khan(2010)....
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TL;DR: This chapter describes an efficient Agrobacterium-mediated genetic transformation of lentil by use of cotyledonary node explants, an optimized wounding method, and vacuum infiltration that allowed 2.3 % transformation efficiency and stable transgene expression and transmission which were tracked through three generations.
Abstract: This chapter describes an efficient Agrobacterium-mediated genetic transformation of lentil by use of cotyledonary node explants, an optimized wounding method, and vacuum infiltration. Transformation protocol was followed by direct regeneration of transgenic shoots and micrografting of the shoots on root stocks to obtain whole-plant regeneration. The most efficient transgene expression on the axil region was obtained when the Agrobacterium KYRT1 strain was used. Gradually increasing selection pressure and repeated removal of regenerated shoots between selection steps increased the number of transgene-expressing shoots greatly. This protocol allowed 2.3 % transformation efficiency and stable transgene expression and transmission which were tracked through three generations.
17 citations
TL;DR: Genetic diversity, correlation, direct and indirect effect, and variability in the Ethiopian lentil germplasm were evaluated at two locations, Sinana and Agarfa, in the 2012/13 cropping season to obtain information on genetic diversity and variability.
Abstract: Genetic diversity is essential for genetic improvement of given crops. If the information on genetic diversity is not enough to utilize, the available variability genetic diversity study should be crucial. Accordingly, twelve lentil germplasms were evaluated at two locations, Sinana and Agarfa, South eastern Ethiopia in the 2012/13 cropping season to obtain information on genetic diversity and variability in the Ethiopian lentil germplasm. At Sinana, the genotypic correlation revealed that number of pod per plant had positive and highly significant association with seed yield, whereas hundred seed weight, days to maturity, number of seeds/plant and plant height had positive but non-significant association with seed yield per plot. However, negative association was observed for stand percentage. At Agarfa, positive and highly significant association was observed between number of pods/plant and seed yield, whereas plant height and number of seeds/pod had negative and highly significant association with seed yield at the genotypic level. The genotypic path analysis at Sinana showed that number of pods/plant and seeds/pod had very high and positive direct effect on seed yield, whereas days to maturity and plant height had negative direct effect on seed yield. At Agarfa, positive direct effect on seed yield was observed in days to maturity and stand percentage; whereas negative direct effect on seed yield was observed in plant height and hundred seed weight at genotypic level.
Key words: Genetic diversity, correlation, direct and indirect effect.
15 citations
01 Jan 2008
TL;DR: Number of primary branches, hundred seed weight, harvest index and biological yield showed positive direct effect along with positive genotypic correlation with seed yield and it was concluded that the traits like hundred seedWeight, Harvest index and Biological yield can be exploited for the improvement of seed yield in lentil.
Abstract: The study was conducted at Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad during the year 2006-2007. Fifteen lentil lines/varieties were evaluated to exploit yield components to the maximum extent and to formulate selection criteria for the improvement of seed yield. Significant genetic variation was observed for all the traits. All the traits under study had high heritability values except number of primary branches. Higher values of heritability coupled with genetic advance were observed for seed yield (98.30%, 128.20%), harvest index (97.10%, 79.40%), biological yield (94.30%, 56.10%) and hundred seed weight (88.30%, 50.80%) which indicates the role of additive genes to control these traits. Hundred seed weight (0.67, 0.65), harvest index (0.94, 0.93) and biological yield (0.81, 0.80) had positive and highly significant correlation with seed yield at both genotypic and phenotypic levels. Number of primary branches, hundred seed weight, harvest index and biological yield showed positive direct effect along with positive genotypic correlation with seed yield. Finally, it was concluded that the traits like hundred seed weight, harvest index and biological yield can be exploited for the improvement of seed yield in lentil.
13 citations
01 Jan 2013
TL;DR: Results indicated that traits like biomass yield, harvest index, pod length, seeds per pod and pods per plant having the highest positive direct effects and highly significant genotypic correlation with seed yield, could be used to improve seed yield in lentil.
Abstract: Lentil, Lens culinaris Medik, germplasm comprising 230 genotypes was evaluated at Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan during the year 2009-10 to identify traits related to high seed yield. Data on different morphological characters like days to mature, plant height, pods per plant, pod length, seeds per pod, biomass yield and seed yield were recorded and analyzed for different genetic parameters, correlation and path analysis. In general genotypic coefficients of variability were lower than their corresponding phenotypic coefficients of variability. The highest heritability estimate (h 2 = 0.97) combined with genetic advance (7.4%) was observed for days to mature. Seed yield and biomass had comparatively greater values of heritability (34.00-38.80%) and genetic advance (20-23%). Biomass had the highest positive direct effects (0.8753) followed by harvest index (0.2973). Biomass also showed the highest value of genotypic correlation (rg = 0.93) while moderate value of genotypic correlation (rg = 0.49) was observed for harvest index. In addition, higher positive direct effects were obtained in pod length, seeds per pod and pods per plant combined with highly significant genotypic correlation with seed yield. These results indicated that traits like biomass yield, harvest index, pod length, seeds per pod and pods per plant having the highest positive direct effects and highly significant genotypic correlation with seed yield, could be used to improve seed yield in lentil. Moreover, plant type with greater canopy volume, longer maturity period and more plant height could be desirable for evolution of high yielding lentil varieties.
8 citations