Biometrical studies of yield and related traits in advance breeding lines of bush type vegetable cowpea [Vigna unguiculata (L.) Walp.]

2017 ◽  
Author(s):  
Hira Lal ◽  
B. Rajasekhar Reddy ◽  
Vishwa Nath
Keyword(s):  
Genetic Divergence ◽  
Strong Positive Correlation ◽  
Effect Analysis ◽  
Breeding Lines ◽  
Pod Yield ◽  
Horticultural Traits ◽  
Peduncle Length ◽  
Pod Length ◽  
Positive Effect ◽  
Number Of Seeds

Sixty-six bush type advance breeding lines of vegetable cowpea developed at ICAR - Indian Institute of Vegetable Research (ICAR-IIVR), Varanasi were evaluated for different horticultural traits for genetic variability, character association, cause-effect analysis and genetic diversity among the genotypes through D2 statistics. High values of genotypic and phenotypic coefficient of variations, heritability (h2B) and genetic advance were recorded for pod yield per plant, number of peduncles and pods per plant, peduncle length, number of primary branches per plant, pod length, pod weight and number of seeds per pod. Pod yield per plant showed strong positive correlation with number of peduncles and pods per plant, pod weight, pod length, number of seeds per pod and number of primary branches per plant, while negative correlation with days to 50% flowering at genotypic and phenotypic levels. The maximum direct positive effect on pod yield per plant was found contributed by number of pods per plant followed by pod weight. Based on degree of divergence the genotypes get grouped into seventeen clusters. The top three characters which contributed most towards the genetic divergence were number of peduncles per plant, peduncle length and pod length. The genotypes of cluster VII showed maximum genetic divergence with genotypes of cluster VIII. Further, cluster VII had the high yielding genotypes, while cluster XVII had early flowering genotypes. Thus, crossing between genotypes of these groups may result in high yielding early genotypes.

Genetic variability, character association and genetic divergence in groundnut (Arachis hypogaea L.) accessions

2019 ◽  
Author(s):  
Monisha Mitra ◽  
Saikat Gantait ◽  
Rajib Kundu
Keyword(s):  
Genetic Divergence ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Additive Variance ◽  
Pod Yield ◽  
Kernel Width ◽  
Arachis Hypogaea L ◽  
High Level ◽  
Positive Direct ◽  
Pod Length

Present investigation was conducted in 31 groundnut accessions to assess genetic divergence, characters association involving 13 quantitative characters and path coefficients in order to identify superior accessions exhibiting higher genetic diversity. Number of pods/plant, secondary branches, kernel width, and pod yield displayed a higher level of coefficient of variation both at phenotypic and genotypic level. Genetic advance with higher heritability indicated preponderance of additive variance for pod length, pod yield, and number of pods/plant. Number of secondary branches, kernel width, pod length, and number of pods/plant revealed significant positive correlation with pod yield. Path coefficient analysis revealed exertion of high positive direct effects on pod yield through pod length, kernel width and number of pods/plant. Cluster analysis exhibited substantial diversity among 31 accessions forming 13 clusters. Two clusters [X (two accessions) and XII (one accession)] showed the largest distance, which suggests hybridization between these accessions to achieve high level of heterosis for further exploitation. Five accessions viz., TAG-24, TG-69, ICGV-02005, TG-73 and TG-80 were identified as the most divergent for future use.

Genetic Variability for Pod Yield and Component Traits in Sugar Snaps (Pisum sativum var. saccharatum)

2020 ◽  
Author(s):  
Ajay Chauhan ◽  
Akhilesh Sharma ◽  
Parveen Sharma ◽  
Viveka Katoch ◽  
Sanjay Chadha ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Block Design ◽  
Internodal Length ◽  
Breeding Lines ◽  
Pod Yield ◽  
Horticultural Traits ◽  
Component Traits ◽  
Additive Gene ◽  
High Heritability ◽  
Positive Direct

Background: Edible podded pea is an oriental vegetable crop which shares the cultivation pattern with the garden pea. Fresh tender pods lacking parchment layer are consumed whole like beans. It is a newly introduced crop in India and therefore, it would be imperative to identify the most promising genotypes vis-à-vis traits of interest, those contributing towards maximization of yield. The present investigation was, therefore, planned to assess the genetic parameters of variability for pod yield and related horticultural traits in order to identify the most promising edible pod pea genotypesMethods: Thirty six genotypes comprising of 29 F7 advanced breeding lines and nine lines from different institutes including three checks namely, ‘Arka Apoorva’, ‘Arka Sampoorna’ and ‘Mithi Phali’ were evaluated in randomized complete block design over three replications during winters 2016-2017 at C.S.K. Himachal Pradesh Krishi Vishvavidyalaya, Palampur for pod yield and related horticultural traits.Result: Sufficient genetic variability was observed for all morphological and yield contributing attributes. The magnitude of phenotypic (PCV) and genotypic (GCV) coefficients of variation were high for pod yield while branches per plant, internodal length, harvest duration and pods per plant showed high PCV and moderate GCV. High heritability along with high genetic advance was observed for internodal length, plant height, average pod weight and pod yield per plant indicating the importance of additive gene action. Pod yield per plant revealed positive correlation at both phenotypic and genotypic levels with pods per plant, average pod weight, pod length and pod breadth. Pods per plant and average pod weight at both phenotypic and genotypic levels had maximum positive direct and indirect effects to the total association of component traits suggesting the importance of these traits towards pod yield. 

Effect of laser priming on canola yield and its components under salt stress

2012 ◽  
Vol 26 (1) ◽  
pp. 45-51 ◽  
Author(s):  
S. Mohammadi ◽  
F. Shekari ◽  
R. Fotovat ◽  
A. Darudi
Keyword(s):  
Salt Stress ◽  
Plant Height ◽  
Correlation Coefficients ◽  
Yield Increase ◽  
Effect On Yield ◽  
Lateral Branches ◽  
Pod Length ◽  
Positive Effect ◽  
Pod Number ◽  
Number Of Seeds

Effect of laser priming on canola yield and its components under salt stressThe effect of laser priming at different irradiation times on canola yield and its components under saline conditions were investigated. The results showed that laser priming had a positive effect on yield and its components and caused yield increase under saline conditions. Increase in salt levels had a negative and significant effect on seed yield, number of seeds per pod, number of pod per plant, pod length and plant height. The results showed that 45-min laser priming had the strongest effect on yield and yield components and reduced significantly the adverse effects of salinity. By contrast, laser radiation applied for 60 and 75 min, resulted in a dramatic decrease in yield and its components. Correlation coefficients between the attributes showed that canola yield had a positive and significant correlation with plant height, number of seeds, pod per main branch and lateral branches, length of pod and number of lateral branches. Effects of laser and salinity were significant on lateral branch pod length but not on main branch pods.

Seed and yield parameters as influenced by season and plant growth regulators in dolichos bean [Lablab purpureus L. (Sweet)]

2019 ◽  
Author(s):  
S. Sajjan Ashok ◽  
Pramoda . ◽  
T.A. Malabasari ◽  
T.R. Shashidhar
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Seed Yield ◽  
Growth Regulators ◽  
Field Experiments ◽  
Foliar Spray ◽  
Rabi Season ◽  
Pod Yield ◽  
Pod Length ◽  
Number Of Seeds

Field experiments were conducted in the Department of Seed Science and Technology, University of Agricultural Sciences, Dharwad, Karnataka during 2016-17. The field experiment consisted of 18 treatment combinations involving two seasons viz., kharif 2016 and rabi 2016-17 and plant growth regulators viz., G1: Control, G2 : GA3 @ 50 ppm, G3 : NAA @ 40 ppm, G4 : Cycocel @ 100 ppm, G5 : Mepiquat chloride @ 50 ppm, G6 : Nitrobenzene @ 200 ppm, G7: TIBA @ 50 ppm, G8 : Brassinosteroids @ 200 ppm, G9 : GA3 @ 5 ppm + IAA @ 5 ppm and experiment was laid out in Factorial RBD with three replications. The more number of pods per plant (117.19), number of seeds per pod (4.25), dry pod yield per plant (118.53 g), dry pod yield per plot (2.07 kg), seed yield per plant (114.48 g), pod length (5.66 cm), seed yield per plot (2.32 kg), seed yield per hectare (1,281 kg) was recorded in rabi season than kharif. Among the plant growth regulators more number of pods per plant (120.44), number of seeds per pod (4.44), dry pod yield per plant (120.17 g), dry pod yield per plot (2.21 kg), seed yield per plant (117.60 g), seed yield per plot (2.55 kg), seed yield per hectare (1,360 kg) and pod length (6.04 cm) was recorded in NAA @ 40 ppm, followed by nitrobenzene @ 200 ppm, (119.78, 4.35, 119.54, 2.11, 116.76, 2.42, 1,299 kg and 5.93 cm, respectively). The interaction effect was found to be non-significant for majority of the characters studied. However, foliar spray of NAA @ 40 ppm during rabi season recorded higher crop growth, seed yield and quality parameters as compared to control.

scholarly journals Correlation and path coefficient analysis of seed yield and yield components of French bean (Phaseolus vulgaris L.) genotypes in sub-tropical region.

2020 ◽  
Author(s):  
S. Kalauni
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Seed Weight ◽  
French Bean ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Pod Yield ◽  
Pod Length ◽  
100 Seed Weight ◽  
Number Of Seeds

Abstract This research aims to determine the relationship between yield and yield components of French bean using multivariate statistical techniques. The study was conducted at Horticulture Research Station, Dailekh, Nepal for consecutive three year of 2016-2018. In this study, six French bean genotypes were used. The following measurements and observations were made: germination (%), pod length (cm), pod diameter (mm), individual pod weight and number of seeds pod-1, number of dry pods plant-1, dry pod yield plant-1 and dry pod yield (t/ha), 100 seed weight (g) and seed yield (t/ha). Highly significant and positive correlation was recorded between seed yield and individual pod weight (r=0.659***), number of seed pod-1 (r=0.548**) and pod length (0.459*). Conversely, pod diameter showed a negative and non-significant (-0.025) correlation on seed yield. Based on simple regression analysis, linear regression of individual pod weight, number of seed pod-1 and pod length leads to an increase in the seed yield (t/ha) by 0.188, 0.285 and 0.103 units respectively. From the path coefficient analysis maximum positive direct effect on seed yield was recorded by number of seeds pod-1 (0.767) followed by 100 seed weight (0.530) and individual pod weight (0.429). Also, stepwise multiple linear regression analysis revealed that three traits including individual pod weight, 100 seed weight and number of dry pod plant-1 with R2 = 68.22% showed their overall contribution towards seed yield. The rest of the variance (R2 = 31.78%) was contributed by the variables that were not included in the study. Results concerning four statistical methods showed that individual pod weight appeared to be most effective contributor of seed yield followed by the number of seed pod-1, 100 seed weight, and pod length. Therefore, attention should be paid to these characters in any breeding program during the selection criteria for improving the seed yield.

scholarly journals Estimation Of Genetic Divergence In Lablab Bean (Lablab purpureus L.) Genotypes

2013 ◽  
Vol 38 (1) ◽  
pp. 105-114 ◽  
Author(s):  
M Salim ◽  
S Hossain ◽  
S Alam ◽  
JA Rashid ◽  
S Islam
Keyword(s):  
Seed Yield ◽  
Genetic Divergence ◽  
Seed Weight ◽  
Lablab Purpureus ◽  
Plant Seed ◽  
Pod Yield ◽  
Cluster Group ◽  
Cluster Data ◽  
100 Seed Weight ◽  
Number Of Seeds

An experiment for diversity analysis with 66 genotypes of lablab bean (Lablab purpureus L.) was conducted at Department of Genetics and Plant Breeding, Bangladesh Agricultural University (BAU) during 2009-2010. Data were collected from all experimental plants on the following characters: days to first flowering, days to 50% flowering, days to first pod setting, no. of pods per plant, wt. of 20 pods (g), pod yield per plant (g), pod length (cm), number of seeds per pod, number of seeds per plant, 100-seed weight (g), and seed yield per plant (g). As per multivariate analysis, the genotypes were grouped into seven clusters. The highest number of genotypes 15 was included in cluster V followed by cluster II, which contained 13 genotypes. Cluster III, I, VI, IV contained 12, 11, 6, and 5 genotypes, respectively. The cluster VII which included 4 genotypes was the smallest among the 7 clusters. It is important to note that the highest amount of genetic divergence within the cluster group was noticed in the cluster VII having only 4 genotypes. The inter-cluster distances (D2) were higher than the intra-cluster distances. The inter-cluster D2 values varied from 2059.094 to 19302.6. The distances between the cluster VII and V; VII and VI; VII and II and VII and I were comparatively high than the other inter-cluster distances. The genotypes of these clusters were thus more diversified for yield and yield contributing characters. The intracluster distance (8502.795) observed in cluster VII revealed maximum diversity among themselves. While the least variation (625.372) was noticed between genotypes of the cluster II signifying the closeness of the genotypes included in this cluster. Data on the contribution of individual characters towards divergence suggested that no. of pods per plant contributed maximum (34.033%) to the genetic divergence followed by pod yield per plant and 100-seed weight. The genotypes of the cluster VII produced highest pods per plant and those of the cluster II produced lowest pod yield per plant. Seed yield per plant was found to be highest in cluster VII and lowest in cluster II. Results of the study suggested that selection for these traits in climbing genotypes might be effective. By strategically using this diversity, the breeder can develop high yielding varieties of lablab bean. Bangladesh J. Agril. Res. 38(1): 105-114, March 2013 DOI: http://dx.doi.org/10.3329/bjar.v38i1.15195

scholarly journals Influence of Sulphur and Boron on Growth and Yield of Garden Pea (Pisum sativum L.)

2021 ◽  
pp. 1-13
Author(s):  
Shovan Krishna Das ◽  
Khaleda Khatun ◽  
Tahmina Mostarin ◽  
Mutasim Fuad Shuvo ◽  
Kanij Fatima ◽  
...  
Keyword(s):  
Plant Height ◽  
Growth And Yield ◽  
Treatment Combination ◽  
Garden Pea ◽  
Pod Yield ◽  
Pisum Sativum L ◽  
Two Factors ◽  
Green Pea ◽  
Pod Length ◽  
Number Of Seeds

An experiment was conducted at the Horticulture Farm of Sher-e-Bangla Agricultural University, Dhaka during the period from October, 2018 to March, 2019 to study the influence of sulphur and boron on growth and yield of garden pea. The experiment comprised of two factors. Factor A: Levels of Sulphur (4 levels); S0: 0 kg S/ha (Control), S1: 10 kg S/ha, S2: 20 kg S/ha, S3: 30 kg S/ha and Factor B: Levels of Boron (4 levels); B0: 0 kg B/ha (Control), B1: 1 kg B/ha, B2: 2 kg B/ha, B3: 3 kg B/ha. This experiment was laid out in Randomized Complete Blocked Design (RCBD) with three replications. Sulphur and Boron application influenced significantly on most of the parameters. In case of sulphur, maximum plant height (50.84 cm), number of pods per plant (14.00), pod length (8.95 cm), number of seeds per pod (5.56) and green pod yield (10.76 t/ha) were recorded from S3 treatment. In case of boron application, maximum plant height (49.17 cm), number of pods per plant (13.48), pod length (8.66 cm), number of seeds per pod (5.41) and green pod yield (10.14 t/ha) were found in B2 treatment. Among the treatment combination, S3B2 treatment gave the highest green pod yield (12.19 t/ha) and the lowest (5.38 t/ha) was obtained from S0B0 treatment. So, garden pea sown at 30 kg S/ha with 2 kg B/ha for suitable green pea production in Dhaka region.

scholarly journals Variability and Genetic Divergence in Vegetable Cowpea Germplasm of Goa

2020 ◽  
Vol 15 (1) ◽  
pp. 45-51
Author(s):  
Thangam M ◽  
Ramachandrudu K ◽  
Ashok Kumar J ◽  
Safeena S A ◽  
Priya Devi S
Keyword(s):  
Significant Contribution ◽  
Warm Season ◽  
High Variability ◽  
Pod Yield ◽  
Wide Variability ◽  
Pole Type ◽  
Leguminous Crops ◽  
Pod Length ◽  
Weight Number ◽  
Number Of Seeds

Vegetable cowpea or Yard long bean [Vigna unguiculata var. sesquipedalis L. (Walp)] is a warm season leguminous crops grown especially for vegetable purpose along the west coast of India. In Goa, pole type varieties are preferred over bushy types as they offer multiple harvests with comparatively longer pods. There is wide variability found for different morphological and other traits in the local types cultivated in the state of Goa. Exploration of genetic variability in the available germplasm is a prerequisite for initiation of any successful breeding programme. Twenty nine genotypes of vegetable cowpea including three improved varieties collected from different parts of Goa state were evaluated for twelve quantitative characters including yield. High variability was observed for pod yield/plant, number of pods/plant and pod length. The high variability for pod yield per plant is apparent as the pod yield ranged from 315.25 to 2070.45 g/plant with an average of 827.48 g per plant. Pod yield depends on number of pods per plant, pod length and pod weight. Number of pods per plant ranged from 36.65 to 147.80. Pod weight depends on pod length, number of seeds per pod and hundred seeds weight. Wide variation was observed for all these characters in the present study. The GCV value was maximum for pod yield per plant (g) followed by pod weight (g) and number of pods per plant. Low values of GCV were observed for days to first flowering, days to first harvest and number of seeds per pod. In the present study, the twenty nine genotypes could be grouped into fourteen clusters based on genetic distance. High coefficient of variation was observed for pod yield per plant, pod weight, number of pods per plant and pod length indicating their significant contribution in determining the inter cluster distances.

Studies on genetic parameters, correlation and path coefficient analysis in er2 introgressed garden pea genotypes

2019 ◽  
Author(s):  
Aziz Ur Rahman ◽  
Viveka Katoch ◽  
Rajeev Rathour ◽  
Shweta Sharma ◽  
S. S. Rana ◽  
...  
Keyword(s):  
Coefficient Of Variation ◽  
Positive Association ◽  
Path Coefficient ◽  
Garden Pea ◽  
Large Variability ◽  
Pod Yield ◽  
Horticultural Traits ◽  
High Heritability ◽  
Positive Direct ◽  
Number Of Seeds

The present investigation was undertaken to estimate the genetic variability, correlation and path coefficient in seven er2 (powdery mildew resistant gene) introgressed lines along with four standard checks in garden pea for different horticultural traits. The analysis of variance showed large variability among all the genotypes studied. The magnitude of phenotypic coefficient of variation was higher than the genotypic coefficient of variation for all the traits. High heritability estimates coupled with high genetic gain were recorded for number of seeds per pod, number of primary branches per plant and pod yield per plant indicating that these traits are governed by additive genes and selection in early generation may be effective. Number of seeds per pod had significant and strong positive association with pod yield per plant both at genotypic and phenotypic levels and number of primary branches per plant at genotypic levels indicating that selection can be made on the basis of these characters for improving yield. Results of path analysis revealed that days to 50 per cent flowering, number of pods per plant and shelling percentage had maximum positive direct effect on pod yield per plant. Hence, these characters can be considered as the most important traits for selecting high yielding genotypes in pea improvement programme.

Estimation of genetic divergence in garden pea (Pisum sativum var. hortense L.) germplasm to facilitate the selection of potential parents for hybridization programme

2015 ◽  
Author(s):  
Rakesh Kumar ◽  
Manish Kumar
Keyword(s):  
Genetic Divergence ◽  
Soluble Solids ◽  
Garden Pea ◽  
Total Sugars ◽  
Pod Yield ◽  
Cluster Distance ◽  
Breeding Schemes ◽  
Pod Length ◽  
Hybridization Programme ◽  
Selection Of

Genetic divergence in the 54 genotypes of pea was worked-out using Mahalanobis’s D<sup>2</sup> statistics to identify the potential parents to be involved in the hybridization programme so that superior segregants can be selected in the segregating generations. On the basis of performance of various traits, 54 genotypes of pea were grouped into four clusters and maximum number of genotypes was accommodated in cluster II. The average intra-cluster distance was found maximum in cluster II and minimum in cluster III. Inter-cluster distance was maximum between cluster II and III indicating that hybridization between genotypes from cluster II and III can be utilized for getting the superior recombinants in segregating generations. Furthermore, on the basis of cluster means for various traits studied, cluster II was found superior for number of pods per plant, pod length, number of seeds per pod, shelling percentage, pod yield, total sugars and total soluble solids, whereas cluster III was found superior for plant height and total phenols. Hence, hybridization between parents from cluster II and cluster III for these characters may produce new recombinants with desired traits in the segregating generations which can be further purified by various plant breeding schemes.

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