scholarly journals Genetic variability, heritability and correlation path analysis in mungbean (Vigna radiata L.wilczek)

2018 ◽  
Vol 43 (3) ◽  
pp. 407-416
Author(s):  
MG Azam ◽  
MA Hossain ◽  
MS Alam ◽  
KS Rahman ◽  
M Hossain
Keyword(s):  
Genetic Variability ◽  
Path Analysis ◽  
Plant Height ◽  
Seed Weight ◽  
Crop Improvement ◽  
Research Centre ◽  
Improvement Program ◽  
Coefficients Of Variation ◽  
Significant Difference ◽  
100 Seed Weight

The success of crop improvement program largely depends on the nature and magnitude of genetic variability, heritability and characters association. This experiment was undertaken to estimate the extent of genetic variability and relation between yield and related characters. Twenty eight mungbean genotypes were grown at Pulses Research Centre, Ishurdi, Pabna during kharif-I 2015 in a randomized complete block design with three replications to estimate the extent of genetic variability and association between yield and yield related traits. Analysis of variance revealed that all the traits showed highly significant difference among genotypes except seeds per pod. Pods per plant, plant height and 100 seed weight showed high genotypic coefficients of variation (GCV) and phenotypic coefficients of variation (PCV). High broadsense heritability coupled with moderate genetic advance as percent of mean was observed for 100 seed weight, days to flower and pods per plant suggesting preponderance of additive gene action for these characters and selection of such traits might be effective for the improvement of grain yield. Seeds per pod, plant height and pods per plant showed positive significant phenotypic and genotypic correlation with yield. The result of path analysis indicated that pods per plant had maximum direct effect on yield followed by plant height and 100 seed weight and they contribute 31% variation in yield.Bangladesh J. Agril. Res. 43(3): 407-416, September 2018

scholarly journals Genetic Variability, Heritability, and Genotypic Correlation of Soybean Agronomic Characters

2021 ◽  
Vol 19 (2) ◽  
pp. 117
Author(s):  
Heru Kuswantoro ◽  
Moch Muchlish Adie ◽  
Pratanti Haksiwi Putri
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
Genetic Parameters ◽  
Genotypic Correlation ◽  
Agronomic Characters ◽  
Days To Maturity ◽  
100 Seed Weight ◽  
Number Of Branches

<p>Genetic parameters are important in genetic improvement and variety development. This study aimed to determine the effective characters that can be applied as selection criterion in soybean breeding using genetic parameters. About 100 soybean genotypes were grown in the Muneng Agricultural Technology Research and Assessment Installation from April to July 2020. The trial was conducted using a randomized complete block design. The results showed that high genetic variability was found on days to maturity, number of branches per plant, number of productive nodes per plant, 100-seed weight, and seed yield. The high heritability was shown by days to maturity, plant height, number of branches per plant, and 100-seed weight. All phenotypic correlations were significant, except for the correlation between seed yield and days to maturity, plant height, number of branches, and number of productive nodes. The seed yield had no genotypic correlation with all agronomic characters observed. The genotypic correlation was only significant for plant height and number of productive nodes, number of branches and number of filled pods, as well as number of productive nodes and 100-seed weight. Therefore, the improvement of seed yield can be conducted through direct selection using the seed yield parameter or indirectly using the 100-seed weight.<br /><br /></p>

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.

Estimation of genetic variability for seed yield and its components in chickpea (Cicer arientinum L.) genotypes

2017 ◽  
Author(s):  
Aybegün Ton ◽  
Adem Emin Anlarsal
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
Yield Component ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Design Data ◽  
Climate Conditions ◽  
100 Seed Weight

The present experiment was conducted to determine magnitude of genetic variability with fifteen kabuli chickpea genotypes in the 2013/2014 and 2014/2015 growing season under Mediterranean climate conditions. In this present study seed yield per plant and yield component were investigated. The experiment was orginazed with three replications in randomized complate blocks design. Data were recorded on plant height, number of branches per plant, height of first podding node, full and total pods number per plant, seeds number per plant, 100-seed weight and seed yield per plant. Analysis of variance for seed yield per plant and its component showed significant differences among all genotypes. Broad-sense heritability ranged from 12.27% (total pod number per plant) to 93.88% (100-seed weight). Moderate and high estimates of broad sense heritability were observed for branches number per plant, harvest index and 100-seed weight. It can be concluded that the seed yield of chickpea can be improved by selecting these characters in breeding chickpea materials.

scholarly journals Estimation Variability, Heritability and Genetic Advance of Mutant Black Rice (M6)

2019 ◽  
Vol 34 (2) ◽  
pp. 170 ◽  
Author(s):  
Ahmad Sofian ◽  
Nandariyah Nandariyah ◽  
Djati Waluyo Djoar ◽  
Sutarno Sutarno
Keyword(s):  
Plant Height ◽  
Seed Weight ◽  
Selection Criteria ◽  
Crop Improvement ◽  
Anthocyanin Content ◽  
Genetic Advance ◽  
Black Rice ◽  
Total Anthocyanin ◽  
Sixth Generation ◽  
Significant Difference

A better understanding of variability in plant populations is crucial for crop improvement which plant breeders can use through selection. This study aimed to determine selection criteria for the sixth generation of black rice through genetic variability, heritability value and genetic advance. This research was conducted from March to July 2018 at Pakahan Village, Jogonalan Sub-district, Klaten Regency, Central Java, using a Randomized Complete Block Design (RCBD). The variables observed were plant height, total number of tillers and productive tillers, panicle length, number of seeds per panicle, panicle intensity index, weight per panicle, 1,000 seed weight, seed weight per plant, flowering age, harvest age, plot yield, yield per hectare, rice color and total anthocyanin content. Variance analysis showed that there was a very significant difference (p &lt;0.01) among the genotypes tested for all observed characters indicating variability. In this study, the phenotypic coefficient of variance (PCV) values was relatively higher than the genotypic coefficient of variance (GCV) for all traits. However, GCV values were close to PCV values in some characters such as plant height, flowering age, harvest age, rice color and anthocyanin content which showed a high contribution of genotypic effects to the phenotypic expression of these characters. The high heritability and high average value of genetic advance were indicated in the parameters of plant height, flowering age, harvest age, rice color and anthocyanin content. The characters of plant height, flowering age, harvest age, rice color and anthocyanin content can be used as sixth-generation black rice selection criteria.

scholarly journals Genetic Variability, Correlation and Path Analysis Studies in Cowpea [Vigna unguiculata (L.) Walp.]

2020 ◽  
Vol 7 (3) ◽  
pp. 123-128
Author(s):  
Santonu Das ◽  
◽  
C. Karak ◽  
S. Roy ◽  
◽  
...  
Keyword(s):  
Genetic Variability ◽  
Grain Yield ◽  
Path Analysis ◽  
Plant Height ◽  
Block Design ◽  
Experimental Studies ◽  
Positive Association ◽  
Grain Weight ◽  
Pod Yield ◽  
Coefficients Of Variation

The present investigation was carried out at Kalyani Simanta District Seed Farm, Kalyani, Nadia under BCKV during Pre-kharif season of 2018-19. Ten genotypes of cowpea were grown in randomized block design with three replications. The genotypes were studied for twelve characters viz, plant height at maturity, number of flower inflorescence-1, number of primary branches plant-1, leaf area, number of pods plant-1, pod weight, number of grains pod-1, pod length, biological yield plant-1, area of primary leaf, hundred grain weight and grain yield plant-1. The experimental studies revealed substantial amount of genetic variability among the genotypes under study. In general, phenotypic coefficients of variation were higher in magnitude than genotypic coefficient of variation. The characters pod yield plant-1 and plant height at maturity showed comparatively higher estimates of genotypic and phenotypic coefficients of variation indicating high level of variability and ample scope for effective improvement. The higher estimates of heritability coupled with high genetic advance as percentage of mean indicated additive gene action for the above characters. Correlation studies revealed strong positive association of pod yield plant-1, hundred grain weight with grain yield plant-1. The path analysis studies indicated that the characters number of pods plant-1 and days to first pod maturity bearing direct positive effect on grain yield, could be the selection criteria for genetic improvement of grain yield plant-1 in cowpea population under study. Thus, the genotypes PL-3, PL-5, Mousumi Laffa are observed as desirable among the population for future use in breeding programme, as these genotypes had good performance for the important quantitative traits.

scholarly journals INTERRELATIONSHIPS AMONG YIELD AND YIELD CONTRIBUTING TRAITS IN CHICKPEA (Cicer arietinum L.)

2015 ◽  
Vol 28 (2) ◽  
pp. 39-46
Author(s):  
Sajid Fiaz ◽  
Muhammad Aslam
Keyword(s):  
Genetic Variability ◽  
Grain Yield ◽  
Plant Height ◽  
Coefficient Of Variation ◽  
Seed Weight ◽  
Path Coefficient ◽  
Plant Weight ◽  
Total Plant ◽  
Heritability Estimates ◽  
100 Seed Weight

Twenty chickpea genotypes including four varieties were evaluated for the existence of genetic variability and to know the interrelationship among yield traits under study during 2013-2014, at University of Agriculture, Faisalabad. The experiment was carried out in a randomized complete block (RCB) design with three replications. Data were recorded on number of days taken to flowering, number of primary branches plant-1, number of secondary branches plant -1, plant height, number of days taken to maturity, number of pods plant -1, numbers of seed pods-1, total plant weight, Number of grains plant-1, 100- seed weight and grain yield plant-1. The obtained data were analyzed for genetic variability parameters, correlation and path coefficient analysis.  The height broad sense heritability estimates were obtained for 100-seed weight (0.977), plant height (0.971), total plant weight (0.971) and number of primary branches plant-1.  Genetic advance was higher for plant height (9.054), total plant weight (9.054), number of pods plant-1 (6.414) and 100-seed weight (2.941). The phenotypic coefficient of variation (PCV) was invariably slightly higher than their corresponding genetic coefficient of variation (GCV) due to influence of environment on character expression. Heritability estimates were higher for all characters except number of days taken to maturity and number of grains per plant, which exhibited moderate heritability. Hundred seed weight, plant height, total plant weight and primary branches per plant would be the suitable selection criteria to accomplish better grain yield in chickpea.

Analysis of Genetic Variability parameters for Seed Yield and its attributing Traits of desi Chickpea (Cicer arietinum L.) under different Environments in West Bengal

2018 ◽  
Vol 5 (02) ◽  
Author(s):  
AVINALAPPA HOTTI ◽  
RAGHUNATH SADHUKHAN
Keyword(s):  
Genetic Variability ◽  
Seed Yield ◽  
Seed Weight ◽  
Harvest Index ◽  
Crop Improvement ◽  
Economic Traits ◽  
Gene Effects ◽  
Late Planting ◽  
Additive Gene ◽  
100 Seed Weight

Twenty two promising Desi chickpea genotypes were grown in RBD with two replications under normal and late sown high temperature conditions with objective to estimate genetic variability for seed yield and its attributing traits to identify potential genotypes for heat tolerance. The maximum genotypic and phenotypic coefficients of variability (GCV and PCV) were observed for number of seeds per pod, 100-seed weight and seed yield per plant under both environments, whereas number of primary branches per plant recorded minimum in late planting conditions. The high heritability coupled with high genetic advance as per cent of mean (GAM) was observed for all traits except days to maturity, plant height and number of pods per plant under both environments but the harvest index recorded moderate heritability coupled with low GAM in late planting conditions. This implies the presence of more additive gene effects for potential crop improvement. On the basis of mean performance for important economic traits under both environments, the genotypes ICCV 92944, Annigeri-1, JG-6, RSG-888, RSG-945 and ICCV-10 were identified as best performer for the number of pods per plant, 100-seed weight, seed yield per plant and harvest index, as well as these genotypes were identified as heat tolerant for the respective traits. The genotype ICCV 10 had stable for yield and yield related traits over both environments, therefore it could be tested over locations for stability verification and for further use in breeding program.

scholarly journals Genetic Variability and Path Analysis Studies in Barley (Hordeum vulgare L.)

2019 ◽  
Vol 7 (2) ◽  
pp. 243-247
Author(s):  
Mohammad Quamrul Islam Matin ◽  
Mohammad Amiruzzaman ◽  
Md. Motasim Billah ◽  
Most. Bilkis Banu ◽  
Nazmun Naher ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Path Analysis ◽  
Plant Height ◽  
Seed Weight ◽  
Block Design ◽  
Spike Length ◽  
Direct Selection ◽  
Hordeum Vulgare L ◽  
Days To Heading ◽  
Positive Direct

The present study was carried out to investigate the correlation coefficient, path analysis and genetic variability among some barley varieties for nine characters in a Randomize Block Design (RBD) with three replications in three environments of Bangladesh. High genotypic coefficient of variation (GCV) was obtained from grain/ spike (29.89 %), yield/ plant (28.72%) and effective tiller/plant (21.86 %) and spike length (13.56 %). The characters with high GCV indicated high potential for selection. The highest heritability (Hb) was observed for 1000 seed weight (95.09) followed by yield/ plant (93.98), grain/ spike (92.09) and spike length (69.93), days to heading (72.65) but the lowest Hb was identified for effective tiller/plant (22.41) followed by the plant height (34.21). Those traits with higher heritability may be considered for selection. Grain/ spike had the highest positive direct effect (5.65) on yield followed by 1000 seed weight (4.65), spike length (1.26), yield/ plant (0.66), days to heading (0.55) and days to maturity (0.34). These parameters were identified as direct selection. Direct negative effect on yield was shown by plant height (-0.32) and effective tiller/plant (-0.74). This was an indication of indirect selection. Int. J. Appl. Sci. Biotechnol. Vol 7(2): 243-247

scholarly journals Chemo-induced pod and seed mutants in mungbean (Vigna Radiata L. Wilczek)

2018 ◽  
Vol 15 (2) ◽  
pp. 57-67 ◽  
Author(s):  
MR Wani ◽  
AR Dar ◽  
A Tak ◽  
I Amin ◽  
NH Shah ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Seed Weight ◽  
Nutritive Value ◽  
Crop Improvement ◽  
Yield Potential ◽  
Positive Trend ◽  
Ethylmethane Sulphonate ◽  
Pod Length ◽  
100 Seed Weight ◽  
Number Of Seeds

Mungbean is one of the most important pulse crops due to its nutritive value and maintaining soil fertility through biological nitrogen fixation. Genetic variability is one of the pre-requisite for crop improvement. The present investigation was aimed at to enhance the genetic variability for three quantitative traits viz. pod length, number of seeds per pod and 100-seed weight in M2 and M3 generations of mungbean following mutagenesis with ethylmethane sulphonate (EMS), hydrazine hydrate (HZ) and sodium azide (SA). Mean pod length did not differ significantly in most of the mutagenic treatments in M2. However, significant improvement for the trait was exhibited with lower and moderate concentrations in M3 generation. The mean number of seeds per pod and 100-seed weight increased with lower and moderate concentrations of the mutagens in M2, whereas M3 generation showed a complete positive trend of shift. Long pod and bold seeded mutants may be exploited to increase the number of seeds per pod and seed size leading to increased yield potential. The genotypic coefficient of variation, heritability and genetic advance increased manifold in the treated population for all these traits suggesting that mutagen induced variability has the substantial scope to improve the mungbean crop.SAARC J. Agri., 15(2): 57-67 (2017)

scholarly journals Genetic Variability in Chickpea (Cicer arietinum L.) under Heat Stress Condition

2020 ◽  
pp. 1-10
Author(s):  
Sanjay Kumar ◽  
B. G. Suresh ◽  
Anand Kumar ◽  
G. R. Lavanya
Keyword(s):  
Genetic Variability ◽  
Grain Yield ◽  
Plant Height ◽  
Coefficient Of Variation ◽  
Seed Weight ◽  
Canopy Temperature ◽  
Path Coefficient ◽  
Biological Yield ◽  
High Heritability ◽  
100 Seed Weight

The present experiment was carried out at field experimentation centre of the Genetics and Plant Breeding, Naini Agricultural Institute, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj (Uttar Pradesh) to study genetic variability, correlation and path analysis in fifty germplasm of chickpea during rabi, 2017-18. The maximum phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were noticed for 100-seed weight, biological yield per plant, grain yield per plant and number of primary branches per plant. High heritability were recorded by 100 seed weight, biological yield per plant, primary branches per plant, grain yield per plant, effective pods per plant, total number of pods per plant, secondary branches per plant, plant height, days to 50% flowering and days to maturity. High heritability coupled with high genetic advance as percent of mean was observed for 100 seed weight, biological yield per plant, primary branches per plant, grain yield per plant, effective pods per plant, total number of pods per plant, secondary branches per plant and plant height which suggested that these characters can be considered as favorable attributes for the improvement through selection. Path coefficient analysis for grain yield per plant revealed that biological yield, harvest index, secondary branches, canopy temperature at vegetative stage, effective pods per plant had given the highest contribution on yield per plant. So the utmost importance should be given to these characters during the selection for yield improvement in late sown chickpea.

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