Genetic variability, association studies and genetic divergence in Indian fenugreek (Trigonella foenum- graecum L.) varieties

2018 ◽  
Author(s):  
Alka Panwar ◽  
Y.K. K. Sharma ◽  
R. S. Meena ◽  
R. K. Solanki ◽  
O. P. Aishwath ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Seed Yield ◽  
Genetic Divergence ◽  
Association Studies ◽  
Test Weight ◽  
Trigonella Foenum Graecum ◽  
Cluster Distance ◽  
Total Divergence ◽  
Trigonella Foenum Graecum L

Indian fenugreek (Trigonella foenum-graecum L.) varieties were biometrically studied for seed yield and yield contributing traits to assess genetic variability, character association and genetic divergence. Highly significant differences between varieties for all the studied traits were observed. Pooled results illustrated high estimates of PCV along with GCV for number of branches per plant, test weight, number of pods per plant, number of nodules per plant, plant height and seed yield per plant. High heritability along with genetic advance was recorded for plant height and test weight. Association studies showed highly significant positive correlation and high direct effect of test weight, plant height and number of pods per plant on seed yield. Diversity analysis grouped the set of 17 varieties into two clusters and there was lack of parallelism between genetic and geographic diversities. Intra cluster distance was the highest in cluster I than cluster II. Test weight (37.50%) contributed the maximum to total divergence, followed by plant height.

Estimates of genetic variability, divergence, correlation and path coefficient for morphological traits in fenugreek (Trigonella foenum-graecum L.) genotypes

2019 ◽  
Author(s):  
R. S. Meena ◽  
Sharda Choudhary ◽  
A. K. Verma ◽  
N. K. Meena ◽  
Suresh Chand Mali
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Morphological Traits ◽  
Path Coefficient ◽  
Trigonella Foenum Graecum ◽  
Cluster Distance ◽  
Selection For ◽  
Total Divergence ◽  
Trigonella Foenum Graecum L ◽  
Number Of Seeds

Seventeen genotypes of fenugreek (Trigonella foenum-graecum L.) were evaluated at ICAR-NRCSS, Ajmer (Rajasthan) during rabi 2014-15 and 2015-16. The highest GCV and PCV were observed for seed yield per plot followed by test weight and 5 plants seed yield. The highest genetic advance was observed for seed yield per plot followed by 5 plants seed yield and plant height. The highest heritability was estimated for 5 plants seed yield followed by plant height and number of primary branches. The genotypes were grouped into six clusters. Inter cluster distance was maximum between clusters IV and VI followed by III and VI while minimum between clusters II and IV. Whereas, the intra-cluster distance was maximum for Cluster-I. Among the eight characters studied for genetic divergence, 5 plants’ seed yield contributed the maximum accounting for 46.32% of total divergence, followed by number of primary branches (16.9%) and plant height (12.5%). It was concluded that improvement of seed yield in fenugreek can possible through selection for number of pod per plant, number of seeds per pod, plant height and number of primary branches. Molecular studies also supported the same findings.

scholarly journals Association analysis for yield and related traits in fenugreek (Trigonella foenum-graecum L.) under different environmental conditions

2017 ◽  
Vol 9 (2) ◽  
pp. 1176-1181
Author(s):  
Preeti Yadav ◽  
Sumit Deswal ◽  
Avtar Singh
Keyword(s):  
Seed Germination ◽  
Plant Height ◽  
Seed Yield ◽  
Test Weight ◽  
Flowering Plant ◽  
Seed Vigour ◽  
Trigonella Foenum Graecum ◽  
Vigour Index ◽  
Field Emergence ◽  
Trigonella Foenum Graecum L

Sixteen diverse genotypes of fenugreek (Trigonella foenum-graecum L.) were grown in five (E1 to E5) environments which were created by different date of sowing during the rabi seasons at the Vegetable Farm of CCS HAU, Hisar. (29°15ˈN, 75°69ˈE) during 2012-13. Observations were recorded on ten randomly selected plants from each genotypes in each replications for characters viz. field emergence index, days to 50 % flowering, plant height, number of pods per plant, number of branches per plant, number of seeds per pod, pod length, seed yield (q/ha), test weight, seed germination, seed vigour index-I and II. The estimation of genotypic and phenotypic coefficients (GCV and PCV) variation in all the environments was consistently decreasing with the delaying in sowing date for all the character studied except plant height and test weight indicating that the environmental influence was comparatively more pronounced for these characters in expressing the phenotypic performance of different genotypes. Highest GCV and PCV was estimated as 50.36 % and 55.93 %, respectively for seed vigour index-I in E1. High value of heritability estimated for characters seed yield, seed vigour index-II, seed germination and branches per plant (above 70 %) in E1 revealed that these were less influenced by environment and low heritability estimated for days to 50 % flowering in E2, plant height in E2, seeds per pod in E3, field emergence index in E5 indicated high influence of environment. Based on environmental indices, the environment E2 was most favourable for all the characters studied except field emergence index.

Genetic divergence analysis in chickpea germplasm

2018 ◽  
Author(s):  
Renuka Shivwanshi ◽  
Anita Babbar
Keyword(s):  
Seed Yield ◽  
Genetic Divergence ◽  
Seed Weight ◽  
Quantitative Traits ◽  
Mean Values ◽  
Cluster Distance ◽  
Biological Yield ◽  
Per Se ◽  
Total Divergence ◽  
100 Seed Weight

A total of 434 germplasm lines of chickpea were assessed for 13 quantitative traits during rabi 2015-16 at JNKVV, Jabalpur. Genotypes were grouped into fourteen clusters. Clusters II and cluster XIV and cluster XII and cluster XIV, had maximum inter cluster distance. The characters viz.,effective pods per plant followed by biological yield per plant, plant height and 100-seed weight were main contribution to total divergence. Cluster XIV and cluster XIII had highest mean values for maximum number of characters. Based on the result IC 83812, EC 198729, EC 490027, IC 53245, IC 83827and IC 83889 are recommended for hybridization, as these genotypes showed good per se performance for seed yield and belong to the highly diverse clusters.

scholarly journals Assessment of genetic variability, correlation and path association in rice (oryza sativa l.)

1970 ◽  
Vol 18 ◽  
pp. 1-8
Author(s):  
SK Yadav ◽  
BG Suresh ◽  
Praveen Pandey ◽  
Binod Kumar
Keyword(s):  
Genetic Variability ◽  
Grain Yield ◽  
Plant Height ◽  
Seed Yield ◽  
Harvest Index ◽  
Test Weight ◽  
Index Number ◽  
Panicle Length ◽  
Spikelets Per Panicle ◽  
Biological Yield

Context: Direct selection based on crop yields is often a paradox in breeding programmes because yield is a complex polygenically inherited character, influenced by its component traits.   Objectives: The present research work was taken up to assess genetic variability, phenotypic and genotypic associations between various components of grain yield to provide basis for selection and yield improvement in rice.   Materials and Methods: Correlation coefficient and path association are used to find out the degree (strength) and direction of relationship between two or more variable and for fixing up the characters which are having decisive role in influencing the yield. Therefore, a field experiment was carried out to establish the extent of association between yield and yield components and others characters in rice. Analysis of variance revealed that significant amount of genetic variability was present in the entire characters studied.   Results: High heritability coupled with high to moderate genetic advance as % of mean was observed on plant height seed yield per plant, biological yield, harvest index, test weight and number of spikelets per panicle suggesting preponderance of additive gene action in the expression of these characters. The correlation coefficient between seed yield per plant and other quantitative attributing to yield showed that grain yield was significantly and positively associated with harvest index, number of tillers per hill, number of panicle per plant, panicle length, number of spikelet's per panicle and test weight at both genotypic and phenotypic levels. Path coefficient at genotypic level revealed that harvest index, biological yield, number of tillers per hill, panicle length, number of spikelets per panicle, plant height and test weight had direct positive effect on seed yield per hill, indicating these are the main contributors to yield.Conclusion: From the correlation and path study it may be concluded that harvest index, number of tillers per hill, panicle length, and number of spikelet per panicle and test weight are the most important characters that contributed directly to seed yield per hill. Thus a genotype with higher magnitude of these traits could be either selected from existing genotypes or evolved by breeding program for genetic improvement of yield in rice.   Key words: Rice; variability; heritability; agro-morphological traits; correlation; pathDOI: http://dx.doi.org/10.3329/jbs.v18i0.8767 JBS 2010; 18(0): 1-8

Assessment of genetic divergence in diverse maize (Zea mays L.) genotypes

2015 ◽  
Vol 49 (5) ◽  
Author(s):  
Radheshyam Sharma ◽  
S. R. Maloo ◽  
Arunabh Joshi ◽  
Sharda Choudhary
Keyword(s):  
Genetic Diversity ◽  
Zea Mays ◽  
Plant Height ◽  
Genetic Divergence ◽  
Harvest Index ◽  
Test Weight ◽  
Leaf Number ◽  
Land Races ◽  
Different Types ◽  
Cluster Distance

Genetic divergence assessed in twenty diverse genotypes of maize (<italic>Zea mays</italic> L.) using D<sup>2</sup> statistics for eleven characters enabled grouping of all the genotypes in five clusters. Test weight, leaf number, harvest index, days to 50 percent flowering and plant height were the major contributors for genetic diversity among the genotypes. Cluster II was the largest contained 6 genotypes followed by cluster III which possessed 5 genotypes. The cluster I, V and IV possessed 4, 3 and 2 genotypes, respectively. Each cluster has different types of genotypes irrespective to their nature of genetic make up belonging to hybrids, composites and land races. The cluster III exhibited maximum intra-cluster distance (30.92), while maximum inter-cluster distance was noted between cluster I and III (91.55).

Designing Selection Criteria by Using Association Studies and Estimation of Genetic Diversity in Fenugreek (Trigonella foenum-graecum L.) Germplasm

2020 ◽  
Author(s):  
Bhawana . Bhatt ◽  
Manoj . Raghav ◽  
K . Prathapan ◽  
Anita . Singh ◽  
A. S. Jeena ◽  
...  
Keyword(s):  
Seed Yield ◽  
Selection Criteria ◽  
Association Studies ◽  
Block Design ◽  
Plant Genetic Resources ◽  
Randomized Block Design ◽  
Leaf Yield ◽  
Cluster Distance ◽  
Transgressive Segregants ◽  
Trigonella Foenum Graecum L

An investigation consisting of 36 fenugreek genotypes and one check (Pusa Early Bunching) was laid out in Randomized Block Design with three replications at Pantnagar Centre for Plant Genetic Resources (PCPGR) of the G.B.P.U.A and T, Pantnagar, Uttarakhand during rabi season of 2016-17 and 2017-18 and observations were recorded on sixteen different traits. The traits viz., number of pods per plant, thousand seed weight and leaf yield per plant exhibited high direct effects on seed yield per plant along with significant positive correlation indicating that these traits can be used as most important selection criteria for seed yield improvement. The diversity analysis leads to formation of nine different clusters and maximum intra-cluster distance was observed in cluster IV (21.07) while highest inter-cluster distance was recorded between cluster VII and IV (46.07). These clusters actually represent the different heterotic pools and genotypes from diverse pools can be crossed to obtain heterosis and transgressive segregants.

scholarly journals Genetic Divergence (D2) Evaluation in Horsegram [Macrotyloma uniflorum (L) Verdcout] Genotypes

2021 ◽  
Vol 10 (9) ◽  
pp. 291-300
Author(s):  
Rakesh Singh ◽  
J. L. Salam Mahendra
Keyword(s):  
Seed Yield ◽  
Quantitative Traits ◽  
Research Station ◽  
College Of Agriculture ◽  
Mean Values ◽  
Macrotyloma Uniflorum ◽  
Days To Maturity ◽  
Cluster Distance ◽  
Check Variety ◽  
Total Divergence

The experiment was performed at Research cum Instructional Farm, Shaheed Gundadhoor College of Agriculture and Research Station, Kumhrawand, Jagdalpur, Chhattisgarh. A total of 56germplasm lines and 1 check variety of horsegram were assessed for 10 quantitative traits during kharif2018.Genotypes were grouped into eight clusters. Clusters VI had maximum intra cluster distance while inter cluster distance was maximum between cluster VI and cluster VIII. Cluster III and cluster VIII had highest mean values for seed yield per plant characters. The characters viz., pods per plant followed by days to maturity and seed yield per plant were main contribution to total divergence. Based on the result genotypes belonging to clusters II, III and VIII are recommended for hybridization, as these genotypes showed good performance for seed yield and belong to the diverse clusters.

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