scholarly journals Genetic Analysis on Yield and Yield Components Traits in the Segregating Populations of Blackgram[Vigna mungo (L.) Hepper]

2021 ◽  
Author(s):  
◽  
Manivannan N ◽  
Ganapathy N ◽  
Iyanar K ◽  
Karthikeyan G ◽  
...  
Keyword(s):  
Seed Yield ◽  
Association Studies ◽  
Positive Association ◽  
Research Centre ◽  
Number Of Clusters ◽  
High Magnitude ◽  
Selection Indices ◽  
Coefficient Of Variability ◽  
High Heritability ◽  
Number Of Branches

The magnitude of variability and association among various traits in F2 populations of three crosses viz., MDU 1 x TU68, VBN6 x TU68, and VBN8 x TU68 of blackgram were studied. The experiment was conducted at the National Pulses Research Centre, Vamban, during Rabi 2019. The genotypic coefficient of variability was lower than the values of phenotypic coefficient of variability, which revealed the influence of the environment in deciding the expression of these populations.The traits viz., plant height, number of branches per plant, number of clusters per plant, number of pods per plant, and seed yield per plant has recorded high heritability and high genetic advance as per cent of mean for the majority of the crosses. It indicated that these traits were less influenced by the environment and possessed with high magnitude of genetic variability. Association studies revealed that the traits viz., number of clusters per plant, and number of pods per plant in all the three crosses recorded significant and positive association with seed yield per plant. Hence, based on the present investigation, it can be concluded that the number of clusters per plant and number of pods per plant should be given due importance in framing the selection indices for seed yield improvement in blackgram. However, separate selection indices are required for each population as the association of traits differs among populations.

scholarly journals Assessment of variability and association for seed yield and yield attributing traits among the interspecific derivatives of greengram x blackgram cross

2021 ◽  
Vol 13 (SI) ◽  
pp. 1-8
Author(s):  
S. Ragul ◽  
N. Manivannan ◽  
A. Mahalingam
Keyword(s):  
Seed Yield ◽  
Coefficient Of Variation ◽  
Vigna Radiata ◽  
Association Studies ◽  
Interspecific Cross ◽  
Vigna Mungo ◽  
Genetic Advance ◽  
Number Of Clusters ◽  
High Heritability ◽  
Derivatives Of

The present investigation was carried out with 24 progenies in F4 generation of interspecific cross derivatives of Vigna radiata cv. VBN(Gg)2 x Vigna mungo cv. Mash 114 to study the variability and association among the yield and the yield component traits. A set of 24 F4 progenies from the interspecific cross between greengram (VBN(Gg)2) and blackgram (Mash 114) formed the basic genetic material for the present investigation. Variability studies recorded high Phenotypic Coefficient of Variation (PCV) and Genotypic Coefficient of Variation (GCV) for the traits viz., number of branches/ plant, number of clusters/ plant, number of pods/ plant and seed yield /plant. High heritability (h2) along with high genetic advance as per cent of mean (GAM) were recorded for the traits, plant height, number of clusters/ plant, number of pods/ plant and seed yield/ plant. Association studies revealed that the trait number of pods/ plant alone recorded high direct positive effect on seed yield/ plant. The results indicated that high magnitude of variability was present among the interspecific progenies for these traits. The high heritability and genetic advance might be due to presence of additive gene action. Hence selection based on these traits might be effective for genetic improvement among the interspecific progenies of Vigna radiata x Vigna mungo. The study indicates that the trait, number of pods / plant should be given due importance in selection programme for seed yield improvement in the interspecific progenies of greengram and blackgram.

scholarly journals Discriminant function analysis for opium and seed yield in opium poppy (Papaver somniferum L.)

Genetika ◽  
2008 ◽  
Vol 40 (2) ◽  
pp. 109-120
Author(s):  
H.K. Yadav ◽  
S. Shukla ◽  
S.P. Singh
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Function Analysis ◽  
Positive Association ◽  
Papaver Somniferum ◽  
Yield Component ◽  
Opium Poppy ◽  
Dual Purpose ◽  
Single Character ◽  
Selection Indices

Opium poppy (Papaver somniferum L.) is an important medicinal plant of pharmacopoel uses. Opium latex and its derivatives are used in different medicines as analgesic, narcotic, sedative, sudorific, hyponitic, antispasmodic, ant diarrhea and cough etc. Genetic improvement in opium and seed yield, component breeding is important and selection based on multiple characters is more beneficial in developing desired plant types. Therefore the present study was made on group of 22 strains of opium poppy to find out variability and suitable selection indices for opium and seed yield. Heritability in broad sense was high for capsule weight/plant, plant height, capsule length, stem diameter and opium yield. The discriminant functions based on single character were less efficient while on the basis of combination it was in general more efficient. The comparison of different functions revealed that capsule weight/plant, capsule length, plant height are major yield component and thus practicing selection for attainment of high opium and seed yield lines, maximum weight age could be given to these characters. The positive association of opium yield and seed yield suggested that by adopting suitable component breeding and selection, a dual-purpose variety (opium and seed yield) may be developed.

Variability, character association and path coefficient analysis of green pod yield and its related traits in pea (Pisum sativum L.)

2017 ◽  
Author(s):  
Keshav K. Gautam ◽  
M. M. Syamal ◽  
A. K. Singh ◽  
Nakul Gupta
Keyword(s):  
Plant Height ◽  
Association Studies ◽  
Path Coefficient ◽  
Pod Yield ◽  
Wide Range ◽  
Character Association ◽  
Additive Gene ◽  
High Heritability ◽  
Positive Direct ◽  
Number Of Branches

Genetic variability, character association and path coefficient studies were carried out for yield and yield contributing characters for twenty-four diverse genotype of pea. The results revealed a wide range of phenotypic variation, along with high heritability in pea. Highest pod yield per plant was recorded in VRP-229 followed by VRP-372 and VRP-305. The characters namely, plant height and weight of seeds per pod showed high magnitude, while number of pods per plant, number of branches per plant and pod yield per plant showed moderate magnitude for phenotypic and genotypic coefficient of variation. The heritability and genetic advance were high for days to first pod initiation, plant height and pod yield per plant indicating its additive gene action for their expression. Character association studies revealed that pod yield per plant exhibit positive and highly significant correlation with number of pods per plant, number of branches per plant and days to fifty percent flowering. The path coefficient studies also revealed that maximum positive direct effect was observed through number of pods per plant followed by days to first flowering, single pod weight and pod length towards yield indicated that these characters may be considered as the most reliable selection indices while making selection for high yielding genotypes.

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.

scholarly journals Variability, Correlation and Path Analysis in F2 Progenies of Inter-Varietal Crosses of Brassica Rapa

2015 ◽  
Vol 6 (1) ◽  
pp. 217-220
Author(s):  
S Ara ◽  
S Afroz ◽  
MS Noman ◽  
MSR Bhuiyan ◽  
MIK Zia
Keyword(s):  
Plant Height ◽  
Brassica Rapa ◽  
Seed Yield ◽  
Yield Potential ◽  
Genetic Advance ◽  
High Heritability ◽  
Correlation And Path Analysis ◽  
Positive Direct ◽  
Number Of Branches ◽  
Plant Length

Eight F2 populations generated through inter-varietal crosses, along with three check varieties of Brassica rapa were evaluated to study the variation in different characters, correlation between pairs of different characters and the direct and indirect effect of different characters on seed yield per plant to select the plants with higher yield potential. From the values of mean, range and (CV%) of seed yield and yield contributing characters it was confirmed that there were considerable variation present among all the genotypes used in the experiment. The values of phenotypic variances were higher than the cor responding genotypic variances. Number of branches per plant, length of siliqua, seeds per siliqua, 1000 seed weight and yield per plant showed least difference between phenotypic and genotypic variances. The values of GCV and PCV indicated that there was least variation present among most of the characters studied. The number of branches per plant, days to 50% flowering, days to maturity and length of siliqua had showed high heritability with low genetic advance and genetic advance in percentage of mean. Yield per plant had significant and highest positive correlation with plant height, days to 50% maturity, length of siliqua and seeds per siliqua. The path co-efficient analysis revealed that siliqua per plant had the highest positive direct effect followed by seeds per siliqua, length of siliqua and plant height. Sixteen most promising plants with higher yield were selected for cultivation.DOI: http://dx.doi.org/10.3329/jesnr.v6i1.22068 J. Environ. Sci. & Natural Resources, 6(1): 217-220 2013

Analysis of yield factors in segregating populations and their implications in selection of flax (Linum usitatissimum)

1983 ◽  
Vol 25 (5) ◽  
pp. 495-501 ◽  
Author(s):  
S. K. Rao ◽  
S. P. Singh
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Linum Usitatissimum ◽  
Seed Weight ◽  
Correlation Coefficients ◽  
Positive Association ◽  
Direct Selection ◽  
Linum Usitatissimum L ◽  
Selection Indices ◽  
Efficient Prediction

Correlation coefficients were calculated in all possible combinations between days to maturity, plant height, number of capsules, primary branches, secondary branches, average number of seeds per capsule, 1000-seed weight, and seed yield per plant in 48 F3 populations of flax (Linum usitatissimum L.). None of these attributes had negative association with seed yield. The majority of the yield components had a strong positive association with seed yield and the correlation coefficient of plant height with seed yield was negligible. Multiple regression analysis revealed that the regression equation involving number of secondary branches and number of capsules per plant had efficient prediction power. Path analysis studies also revealed that number of capsules followed by secondary branches and 1000-seed weight were the major components influencing seed yield. Selection indices based on primary branches, secondary branches, number of capsules, 1000-seed weight, and seed yield per plant were 203.83% superior to direct selection for seed yield.

scholarly journals Genetic variability for grain yield and water use efficiency in blackgram genotypes

2017 ◽  
Vol 9 (3) ◽  
pp. 1592-1597
Author(s):  
N. Jyothi Lakshmi ◽  
M. Vanaja ◽  
S. K. Yadav ◽  
Ch. Ram Prasad ◽  
P. Sathish ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Seed Yield ◽  
Total Biomass ◽  
Genetic Advance ◽  
Mean Values ◽  
Coefficient Of Variability ◽  
Cluster Distance ◽  
High Heritability ◽  
Use Efficiency

Transpiration efficiency (TE, g biomass kg-1 water transpired) is the preferred measure for examining po- tential genetic variation in crop water use efficiency (WUE). TE was assessed gravimetrically from sowing to grain harvest in fifteen blackgram accessions, two checks and two local varieties under well-watered conditions during kharif season. TEbiomass varied from 2.87 - 5.27 g kg-1 and TEseed varied from 1.10 - 2.03 g kg-1 among genotypes. High coefficient of variability was observed for seed yield and TEseed.Total biomass, TEbiomass, HI and water transpired recorded medium coefficient of variability. High heritability in broad sense was observed for seed yield, TEseed and total biomass. High genetic advance as percent of mean was observed for seed yield, TEseed, total biomass and TEbiomass. High heritability coupled with high genetic advance as per cent of mean was observed for seed yield, total biomass and TEseed.TEseed is significantly positively correlated with TEbiomass (0.883**), seed yield/ plant (0.805**), HI (0.757**) and biomass (0.572*). TEbiomass, seed yield per plant, total biomass and HI were the important components of TEseed as revealed by correlation studies.D2 analysis partitioned the nineteen genotypes in to five clusters. The maximum inter cluster distance was observed between cluster II and V (24.94) and III and IV (22.6). Genotypes IC436665, IC343952 and Local II (Cluster III) had high mean values for TEbiomass and TEseed along with total biomass and seed yield. These genotypes should be useful in future breeding programs for higher water use efficiency.

scholarly journals Genetic Variability, Association and Path Coefficient Analyses in Segregating Populations of Black Gram (Vigna mungo (L.) Hepper)

2021 ◽  
Vol 108 ◽  
Author(s):  
Sathya P ◽  
◽  
Manivannan N ◽  
Viswanathan P L ◽  
Ganapathy N ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Seed Yield ◽  
Selection Index ◽  
Research Centre ◽  
Path Coefficient ◽  
Cluster Number ◽  
Path Analyses ◽  
High Heritability ◽  
Improvement Programme ◽  
F2 Generation

The experiment was conducted at the National Pulses Research Centre, Vamban, during Kharif 2020. F2 generation of four crosses was utilized in this study. Around 150-200 single plants per cross were used for observation. The traits viz., plant height, number of branches per plant, number of cluster per plant, number of pods per cluster, number of pods per plant, 100 - seed weight and seed yield per plant recorded high PCV, GCV, high heritability along with high genetic advance as per cent of the mean. It indicated that these traits were less influenced by the environment and possessed high genetic variability. Also, these traits had a positive and significant correlation with seed yield in most of the crosses. The trait number pods per plant recorded positive and high direct effects on seed yield. Hence, based on correlation and path analyses, the number of pods per plant can be considered as a selection index for seed yield improvement programme in blackgram. However, population-specific selection indices are preferred as the association of traits varies with the populations

scholarly journals Genetic variability and character association of Bangladeshi popular varieties of mustard (Brassica rapa L.)

2021 ◽  
Vol 44 (2) ◽  
pp. 95-107
Author(s):  
Fahmida Sultana ◽  
Jamilur Rahman ◽  
Md Mahmudul Hasan
Keyword(s):  
Genetic Variability ◽  
Brassica Rapa ◽  
Seed Yield ◽  
Seed Weight ◽  
Positive Association ◽  
Yield Attributes ◽  
High Heritability ◽  
Academy Of Sciences ◽  
Number Of Seeds ◽  
Additive Genes

A study was conducted to estimate genetic variability, correlation and direct and indirect effects of yield attributes on seed yield of fourteen Bangladeshi varieties of Brassica rapa. High heritability coupled with high genetic advance was recorded in a number of secondary branches plant-1, a number of siliqua plant-1 and a number of seeds siliqua-1 indicating the effects of additive genes in controlling the traits. Significant and positive association with seed yield plant-1 were observed in the number of primary branches plant-1, a number of seeds siliqua-1, while a negative association was found in days to maturity. The path analysis revealed that the days to first flowering, number of secondary branches plant-1 and 1000 seed weight were the main contributors to seed yield. The results suggest that days to first flowering, number of primary and secondary branches plant-1 and 1000 seed weight may be considered for selection to improve the seed yield in B. rapa. Journal of Bangladesh Academy of Sciences, Vol. 44, No. 2, 95-107, 2020

Genetic Variability, Correlation and Path Analysis in Fennel (Foeniculumvulgaremill.) Genotypes

2017 ◽  
Vol 4 (04) ◽  
Author(s):  
R. S. MEENA ◽  
LAD DHAKAR
Keyword(s):  
Genetic Variability ◽  
Essential Oil ◽  
Seed Yield ◽  
Test Weight ◽  
Research Centre ◽  
Path Coefficient ◽  
High Heritability ◽  
Correlation And Path Analysis ◽  
Positive Direct ◽  
Very High

To know the extent and pattern of genetic variability exist in fennel (FoeniculumvulgareMill.), a studywere undertaken for at ICAR-National Research Centre on Seed Spices, Ajmer (Rajasthan) India. Analysis of variance wasworked out and it was recorded that most of trait understudy were found significant whereas test weight (g), seed yield per plot (kg) and essential oil were found non-significant. Results revealed that maximum PCV along with GCV were found fornumber of umbels per plant (24.65), seed yield per plot (21.74) and number of secondary branches (20.93). Very high heritability was observed for seed yield per plot (96.1) and number of umbels per plant (94.9). Likewise genetic advance was recorded highest for number of umbels per plant (24.25) and seed yield per plot (0.53). Seed yield was significantly and positively correlated with number of umbellets per umbel (0.329*), test weight (0.371*) and essential oil (0.371*) at genotypic and phenotypic level. Path coefficient analysis exhibit that number of umbels per plant (7.09) had highest positive direct effect on funnel seed yield.

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