Studies on genetic variability and character association for yield and yield related traits in french bean (Phaseolus vulgaris L.)

2018 ◽  
Author(s):  
Y. A. Lyngdoh ◽  
Umesh Thapa ◽  
A. Shadap ◽  
Jogendra Singh ◽  
B. S. Tomar
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Environmental Influence ◽  
Heritability Estimate ◽  
French Bean ◽  
Phaseolus Vulgaris L ◽  
Pod Yield ◽  
Number Of Leaves ◽  
Positive Direct ◽  
Pod Length

Eighteen genotypes of french bean were evaluated for genetic variability and correlation studies for pod yield and its attributing characters. Both GCV and PCV corresponded closely for all the characters indicating low environmental influence. Highest GCV and PCV were recorded for seed weight per pod (145.12 % and 144.87%, respectively). The highest heritability estimate was observed for number of pods per plant (99.71 %). Pod yield per plant was significantly and positively correlated with number of pods per plant, flower per inflorescence, pod set per inflorescence, plant height and number of leaves per plant. Six characters viz., number of pods per plant (0.917), pod girth (0.791), plant height (0.765), flowers per inflorescence (0.529), pod length (0.284) and days to first flowering (0.134) had high and positive direct effect on pod yield. Therefore, plant height, flower per inflorescence and number of pods per plant emerged as the three most important characters influencing pod yield and selection based on these characters may improve the pod yield.

Study of genetic variability, character association, path analysis and selection parameters for heterotic recombinant inbred lines of garden peas (Pisum sativum var. Hortense L.) under mid-hill conditions of Himachal Pradesh, India

2015 ◽  
Author(s):  
Viveka Katoch ◽  
Prem Singh ◽  
Mayanglambam Bilashini Devi ◽  
Akhilesh Sharma ◽  
G. D. Sharma ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Path Analysis ◽  
Plant Height ◽  
Yield Potential ◽  
Genetic Advance ◽  
Recombinant Inbreds ◽  
Pod Yield ◽  
Positive Direct ◽  
L 14 ◽  
Pod Length

The present investigations involving forty five diverse pea recombinant inbreds and three standard checks were carried out for two successive years during 2011-2012 and 2012-13. The objective of the study was to ascertain genetic variability, heritability, genetic advance, correlation and path coefficient among yield and other horticultural and quality traits and identification of superior recombinants for their utilization in crop improvement programme. Wide range of variability was observed for most of the characters under study. The magnitude of phenotypic coefficient of variation (PCV) was higher than the genotypic coefficient of variability (GCV) for all the traits. High phenotypic and genotypic coefficient of variations were recorded for protein content, ascorbic acid, plant height and pod yield per plant for both the years. Pod yield per plant and plant height exhibited high heritability associated with high genetic advance in the respective years indicating the additive gene action for their expression and are likely to respond better to selection. Pod yield showed a positive and significant correlation with number of pods per plant, pod length and number of seeds per pod both the years. Path analysis revealed that number of pods per plant and pod length have highest positive direct effect both the years and thus it may be treated as selection criteria for isolating higher yielding genotypes in garden peas. In heterosis study, some of the recombinant inbreds were found superior over standard checks which include L-14 and L-13 for pod yield/plant, number of pod/plant and earliness. These findings can be further utilized to develop and enhance the yield potential of garden pea.

Studies on genetic variability and character association in Indian bean [Lablab purpureus (L.) Sweet]

2016 ◽  
Author(s):  
Jitendra Choudhary ◽  
S. S. Kushwah ◽  
O. P. Singh ◽  
I. S. Naruka
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Seed Yield ◽  
Heritability Estimate ◽  
Lablab Purpureus ◽  
Plant Seed ◽  
Pod Yield ◽  
Moisture Percentage ◽  
Pericarp Thickness ◽  
Pod Length

Sixty four genotypes of Indian bean [Lablab purpureus (L.) Sweet] were evaluated for genetic variability and correlation coefficient analysis for green pod yield and its contributing characters. The analysis of variance revealed significant differences among the genotypes for all the traits. Plant height, seed yield per plant, seed yield q/ha, green pod yield per plant, green pod yield q/ha, pod width, weight of 10 pod, number of green pod per plant, pericarp thickness and days to first flowering exhibited high GCV and PCV values indicating large amount of variation. The highest heritability estimate was observed for days to last picking (99.60 %). In the present study highest value of EGA was observed for the seed yield per plant (194.78%) followed by the green pod yield per plant (175.87%). Green pod yield per plant exhibited positive and significant correlation with green pod yield q/ha, seed yield q/ha, plant height at 60 days, days to first flowering, days to first picking, days to last picking, weight of 10 pod, weight of 100 seed, number of green pod per plant, pod length, pericarp thickness, moisture percentage and seed yield per plant at both genotypic and phenotypic levels.

Genetic variability determination in garden pea (Pisum sativum L sub sp. hortense Asch. and Graebn.) by using the multivariate analysis

2017 ◽  
Author(s):  
S.R. Singh ◽  
N. Ahmed ◽  
D. B. Singh ◽  
K. K. Srivastva ◽  
R. K. Singhand Abid Mir
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Principal Component ◽  
Single Linkage ◽  
Pod Yield ◽  
Yield And Quality ◽  
Single Linkage Cluster ◽  
Positive Traits ◽  
Linkage Cluster ◽  
Pod Length

A total of 32 genotypes collected from different geographical areas evaluated at one site to determine the genetic variability. Considerable diversity was found in different traits of horticultural importance. Principal component analysis showed more than 84 % of total multivariate variation for important traits in different genotypes. Pod yield, pod length,10 pods weight and pods per plant were found to be major traits contributing towards principal component-I. Similarly, seeds per pod, secondary branches/plant, pod length were main positive contributing traits towards second component. Ten pod weight, pod width were positively contributing component towards principal component third. Pods per plant and shelling percentage were main traits contributing to principal component-IV, where as plant height, pod length and pod width were major positively contributing traits towards principal component -V. PS-1100, Meethi Phali, PB-87 and FC-1 were most divergent genotypes. On the basis of cluster mean of single linkage cluster analysis, Custer-I was best for number of primary branches and shelling percentage, Cluster -II for plant height,10 pods weight and pod yield per plant, cluster-III for number of pods /plants and cluster IV for pod length. Selection of genotypes from divergent clusters and components having more than one positive traits for hybridization programme may lead to improvement in yield and quality of pea.

Assessment of genetic variability and inter-character association in the germplasm of cowpea (Vigna Unguiculata L. Walp) in hot arid climate

2018 ◽  
Author(s):  
Om Vir Singh ◽  
Neelam Shekhawat ◽  
Kartar Singh ◽  
R. Gowthami
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Seed Yield ◽  
Vigna Unguiculata ◽  
Seed Weight ◽  
Number Of Clusters ◽  
Positive Direct ◽  
Pod Length ◽  
100 Seed Weight ◽  
Number Of Branches

Studies on genetic variability, correlation and path coefficient analysis were carried out with 38 accessions of cowpea (Vigna unguiculata L. Walp.) evaluated in two environments i. e. kharif 2013 (E1) and kharif 2014 (E2) at Research field of NBPGR, Regional Station Jodhpur, India. Analysis of variance revealed significant differences among the genotypes for all the traits. Genotypic coefficient of variation was highest for number of clusters per plant followed by number of pods per plant in both the environments. High broad sense heritability along with high genetic advance for seed yield per plant, 100 seed weight, pod length, number of pods per plant, peduncle length, number of clusters per plant, number of branches per plant and plant height indicated the presence of additive gene effects for these traits in cowpea. In both the environments seed yield per plant was positively correlated with 100 seed weight, pod length, number of pods per plant, number of clusters per plant, number of branches per plant and plant height. The highest positive direct effect registered by number of branches per plant followed by number of clusters per plant in E1 environment and by number of branches per plant followed by plant height in E2 environment. The traits like 100 seed weight, plant height, number of pods per plant number of clusters per plant and number of branches per plant were identified as selection criteria for obtaining good parental lines in cowpea breeding programmes.

Nature and magnitude of genetic variability and diversity analysis of Indian turmeric accessions using agro-morphological descriptors

2016 ◽  
Vol 96 (3) ◽  
pp. 371-381 ◽  
Author(s):  
Vijay Bahadur ◽  
Vijay Yeshudas ◽  
Om Prakash Meena
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Block Design ◽  
Positive Association ◽  
Breeding Programs ◽  
Analysis Techniques ◽  
Randomized Complete Block Design ◽  
Cluster Distance ◽  
Number Of Leaves ◽  
Positive Direct

Turmeric, a vegetatively propagated crop, may have restricted variability from which to breed new cultivars. Understanding the genetic variability of a species is crucial for the progress of a genetic breeding program and requires characterization and evaluation of accessions. The objectives of this study were to determine extent of variability, relationships between different agro-morphological traits, and diversity among 25 different accessions of turmeric. The present experiment was conducted at the Vegetable Research Farm, Department of Horticulture, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad, India during 2008–2009 and 2009–2010. Accessions were arranged in a randomized complete block design with three replications. Significant mean square of accessions for all the traits studied indicates the existence of sufficient genetic variability among the studied accessions. The rhizome yield exhibited highly significant and positive association with plant height, number of leaves plant−1, number of tillers plant−1, weight of rhizomes plant−1, length of primary rhizome, and dry matter recovery. The highest positive direct effect on rhizome yield was exerted by plant height. Multivariate analysis techniques allowed an effective study of genetic divergence and the grouping of the 25 accessions into six clusters. The highest inter-cluster distance was observed between cluster II and IV, accessions from these clusters can be used as potential parents for future breeding programs.

Inter-characters association studies for morphological, yield and yield attributes in the germplasm of french bean (Phaseolus vulgaris L.)in Tarai region of Uttarakhand, India

2017 ◽  
Author(s):  
Dhirendra Kumar Singh ◽  
Ankit Panchbhaiya ◽  
S. K. Jain
Keyword(s):  
Association Studies ◽  
French Bean ◽  
Path Coefficient ◽  
Positive Contribution ◽  
Path Coefficient Analysis ◽  
Phaseolus Vulgaris L ◽  
Cluster Number ◽  
Yield Attributes ◽  
Pod Yield ◽  
Pod Length

The 74 french bean genotypes were evaluated for twenty two quantitative traits to study the character association and path analysis during Jan- May, 2014. Pod yield was highly significant and positive correlated with days to 50% flowering, seed yield per plant, plant height, number of pods per plant, number of pod clusters per plant, number of pods per cluster, number of seeds per pod, pod length and weight of single pod. Path coefficient analysis revealed that single pod weight and number of pods per plant had the highest positive contribution towards the pod yield.

scholarly journals Genetic Characterization for Quantitative and Qualitative Traits and Its Relationship in Faba Bean (Vicia Faba L.)

2019 ◽  
Author(s):  
Sanket Kumar ◽  
Santanu Layek ◽  
Anamika Upadhyay ◽  
M.K. Pandit ◽  
Rajib Nath ◽  
...  
Keyword(s):  
Plant Height ◽  
Faba Bean ◽  
Genetic Characterization ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Pod Yield ◽  
Vicia Faba L ◽  
Breeding Programmes ◽  
Positive Direct ◽  
Pod Length

An experiment comprising of twenty four diverse Faba bean genotypes were evaluated for genetic variability, correlation and path coefficient analysis for pod yield and its contributing traits. Phenotypic and genotypic coefficient of variation were highest for pod yield per plant (PCV= 55.87% and GCV= 53.90%). Pod yield per plant was significantly and positively correlated with plant height, number of primary branches, pod length, pod width, pod weight and number of pods per plant at genotypic level. Number of pods per plant showed the highest positive direct effect (0.845) on pod yield per plant. Days to fifty percent flowering, days to first pod picking, plant height, number of primary branches, pod width and number of pods per plant appeared as most important characters and could be considered during selection in Faba bean breeding programmes

scholarly journals Assessment of Genetic Variability and Correlation of Yield Related Traits in Chickpea (Cicer arietinum L.)

2021 ◽  
pp. 181-188
Author(s):  
Veeramalla Rohith Guptha ◽  
Gabrial M. Lal ◽  
Jakkam Mahipal Reddy ◽  
P. Venkata Bala Bramhanjaneyulu ◽  
C. Kalyan Sagar ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Path Analysis ◽  
Plant Height ◽  
Seed Yield ◽  
Block Design ◽  
Heritability Estimate ◽  
Selection Strategy ◽  
Plant Seed ◽  
Positive Direct ◽  
Number Of Seeds

The present investigation was undertaken with 21 genotypes of Chickpea, (including one check) during Rabi 2020-21 in a randomized block design with three replications at field experimentation centre of Department of Genetics and Plant Breeding. Sam Higginbottom University of Agriculture, Technology and Sciences. The data were recorded for 13 characters to study genetic variability, correlation and path analysis. Analysis of variance among 21 genotypes showed highly significant differences for all the characters indicated the presence of substantial amount of genetic variability. On the basis of mean performance, the highest seed yield was observed in genotype NBEG-1121 and RVS-5949. The estimates of GCV and PCV were moderate for plant height, number of primary branches. Low GCV and PCV was recorded for days to 50% flowering. The difference between PCV and GCV was very low for all 13 yield contributing characters. This indicates that the influence of environment factor was low on these characters. High heritability estimate was recorded for number of seeds per plant, number of secondary branches per plant. A high magnitude of genetic advance expressed as a percent of mean was observed in respect of number of seeds per plant, number of secondary branches per plant. Seed yield per plant exhibited positive and highly significant correlations with days to 50% Flowering, no of secondary branches at both genotypic and phenotypic level. The positive non-significant correlations of seed yield per plant were found with number of secondary branches and days to maturity. Negative non- significant correlation was being observed with the plant height, number of primary branches per plant and number of pods per plant. Path analysis at both genotypic and phenotypic level showed positive direct effects by days to 50% flowering, number of secondary branches per plant. The characters identified above as important components merit due to consideration in the formulation of effective selection strategy in chickpea for developing high yielding varieties.

scholarly journals Genetic interrelationship among quantitative traits and path analysis of some West African okra (Abelmoschus caillei) genotypes

2019 ◽  
Vol 11 (1) ◽  
pp. 3-7 ◽  
Author(s):  
P.M. Jonah ◽  
Y.M. Kwaga
Keyword(s):  
Plant Height ◽  
Significant Positive Correlation ◽  
Diallel Cross ◽  
West African ◽  
Path Coefficient ◽  
Yield Attributes ◽  
Positive Correlation ◽  
Pod Yield ◽  
Number Of Leaves ◽  
Pod Length

Abstract. Thirty-six entries of a half diallel cross were evaluated at the Teaching and Research Farm, Adamawa State University, Mubi in 2012 and 2013 under rain fed conditions. The investigation was conducted to study inter-character correlations and path coefficient analyses of yield related traits in West African okra. Fresh pod yield exhibited highly significant (P≤0.01) positive correlation with pods/plant, pod length, branches/plant, pod diameter and leaves/plant. Pod length recorded a highly significant positive correlation with plant height, pod diameter, number of leaves/plant, branches/plant and pods/plant. Similarly, pod diameter had a highly significant positive correlation with plant height, number of leaves, branches and pods/plant. Furthermore, number of pods/plant and branches/plant recorded highly significant positive correlation among yield related traits except plant height. The path coefficient analysis of fresh pod yield and yield related traits showed that number of pods/plant gave the highest direct contribution and percentage yield contribution of 47.83%, followed by pod diameter which contributed 4.58%. Also the highest combined contribution of 14.43% came from pods/plant and pod diameter. Residual percentage contribution was 30.64% revealing that pod yield attributes in this study explained 69.36%. This investigation suggests that pods/plant and pod diameter can be considered as selection criteria for the improvement of West African okra genotypes.

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