Identification of Transgressive Segregants and Variability Studies in Segregating Generations of Four Crosses in Chickpea

2021 ◽  
Author(s):  
P. Sundaram ◽  
S. Samineni ◽  
S.B. Sajja ◽  
S.P. Singh ◽  
P. Joshi ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Genetic Advance ◽  
The Past ◽  
Breeding Programmes ◽  
Additive Gene ◽  
Transgressive Segregants ◽  
Efficiency Of Selection ◽  
100 Seed Weight ◽  
Number Of Seeds ◽  
Made In

Background: An impressive progress has been made in development and promotion of extra-large kabuli chickpea varieties in India during the past decade. As a result, India has become from importer to exporter of kabuli chickpea. The breeding programmes need to continue efforts on enhancing genetic gain in breeding kabuli chickpea varieties through increasing genetic variability and precision and efficiency of selection. This study was aimed at evaluating early segregating generations of chickpea to assess genetic variability for various important traits. Methods: Four large-seeded kabuli chickpea genotypes (JGK 2, KAK 2, KRIPA and ICC 17109); were crossed with a common small-seeded kabuli genotype (ICC 16644). F1, F2 and F3 along with parents were evaluated under normal field conditions and observations were recorded on various phenological, morphological and yield traits. Data was analysed to estimate genetic variability, heritability and genetic advance in the segregating populations.Result: Considerably high variability was observed in F2 and F3 populations of all the crosses. Heritability estimates in broad sense were high coupled with high genetic advance as per cent of mean for days to first flower, days to pod initiation, number of pods per plant, number of seeds per plant and 100-seed weight which indicated the presence of additive gene action for these traits. Large number of transgressive segregants was identified for number of seeds per plant followed by number of pods per plant and yield per plant. The most promising transgressive segregants could be used in future breeding programme. 

Combining Ability and Heterosis Studies in Blackgram [Vigna mungo (L.) Hepper]

2021 ◽  
Author(s):  
Pulak Debbarma ◽  
Ravi Kant ◽  
Surendra Bahadur Mishra ◽  
Lal Ji Bharti ◽  
Vinay Rojaria ◽  
...  
Keyword(s):  
Seed Yield ◽  
Combining Ability ◽  
Plant Seed ◽  
Breeding Programmes ◽  
Biological Yield ◽  
Additive Gene ◽  
Plant Hybrid ◽  
Standard Heterosis ◽  
100 Seed Weight ◽  
Made In

Background: Blackgram is one of the important pulse crops. To improve the yield levels in this crop, studies on combining ability and heterosis are a method to select suitable parents based on their general and specific combing ability and heterotic effects for use in further breeding programmes. Methods: The present investigation was conducted during Kharif 2019. The crosses were made in line × tester mating fashion during the summer season of 2019 for obtaining 15 (Fifteen) crosses. Fifteen hybrids and their parents (3 lines and 5 testers), including one check, were grown and eleven traits were recorded to estimate general and specific combining ability in the modified line × tester method. Result: In the present investigation the predominance of non-additive gene effect in the expression of plant height, no. of clusters per plant, no. of pods per cluster, no. of pods per plant, seed yield per plant, biological yield per plant, 100 seed weight and harvest index was found. Among parents, KUP 18-346 and KUP 18-350, Pant U-31 were found to be good general combiner for seed yield and some other characters. Hybrids viz., KUP 18-350 × Pant U-31, KUP 18-345 × T-9 and KUP 18-345 × Uttara were found promising combinations for seed yield per plant. Hybrid, KUP 18-350 × Pant U-31 recorded significant standard heterosis, heterobeltiosis and average heterosis for most of the important characters.

scholarly journals Comparison of Genetic Parameters among Selfed Lines and Random Mated Population A (PDM 53 x PDM 4441) and Population B (HKI 1105 x HKI 323) and Identification of Transgressive Segregants

2021 ◽  
pp. 159-177
Author(s):  
Asha T ◽  
Sanjeev K. Deshpande ◽  
B. D. Biradar ◽  
Mahabaleshwar G Hegde
Keyword(s):  
Genetic Variability ◽  
Genetic Parameters ◽  
Allelic Frequency ◽  
Corn Yield ◽  
Genetic Advance ◽  
Male And Female ◽  
Transgressive Segregant ◽  
Breeding Programmes ◽  
High Heritability ◽  
Transgressive Segregants

The present study was conducted to compare the genetic variability parameters among selfed lines of population A (PDM 53 x PDM 4441) and population B (HKI 1105 x HKI 323) and also random mated population A (PDM 53 x PDM 4441) and random mated population B (HKI 1105 x HKI 323) using original inbred parents and three commercial checks, HM-4 (National check), CPB 468 and TENDER (Private check). High heritability coupled with high genetic advance was observed for number of cobs per plant, husked cob weight, dehusked cob weight, baby corn yield with and without husk per plant among selfed populations and a similar trend was observed in random mated populations except for ear length and days to 50 % silking. In total the variability observed was more in random mated populations than selfed lines because allelic frequency differences occur in random mated populations and the pool of gametes originating from male and female is different when compared to the pollen source in selfed populations. The frequency of transgressive segregants were more in random mated Population A (PDM 53 x PDM 4441) and the most promising transgressive segregant identified can be used in the further breeding programmes.

scholarly journals Genetic variability and trait relationship in cherry tomato (Solanum lycopersicum L. var. cerasiforme (Dunnal) A. Gray)

2013 ◽  
Vol 41 (2) ◽  
pp. 163-167 ◽  
Author(s):  
MS Islam ◽  
HC Mohanta ◽  
MR Ismail ◽  
MY Rafii ◽  
MA Malek
Keyword(s):  
Genetic Variability ◽  
Solanum Lycopersicum ◽  
Fruit Weight ◽  
Fruit Yield ◽  
High Yield ◽  
Genetic Advance ◽  
Cherry Tomato ◽  
Solanum Lycopersicum L ◽  
Wide Range ◽  
Additive Gene

Nine traits of 11 cherry tomato (Solanum lycopersicum L.) var. cerasiforme (Dunal) A. Gray) inbred lines exhibited a wide range of genetic variability. High geno- and phenotypic coefficients of variation were obtained for individual fruit weight (68.16 and 74.23%, respectively) followed by number of fruits/plant (58.8 and 68.34%, respectively). High estimates of heritability, genetic advance and genotypic coefficient of variation for the traits of individual fruit weight, number of fruits and clusters/plant were controlled by additive gene action indicating the possibility of selection to improve these characters. Fruit yield/plant showed low heritability along with low genetic advance and did not show significant and positive correlation with the remaining characters. It indicates that improvement of high yield through selection is difficult, rather hybridization can be effective for improving the fruit yield/plant. Among the lines, CH154 produced the highest number of fruits/plant (291) and highest fruit yield (1.89 kg/plant and 63.4 t/ha) and can be selected for cultivation under Bangladesh condition. DOI: http://dx.doi.org/10.3329/bjb.v41i2.13443 Bangladesh J. Bot. 41(2): 163-167, 2012 (December)

scholarly journals Heterosis and gene action in okra

2008 ◽  
Vol 32 (3) ◽  
pp. 421-432 ◽  
Author(s):  
Nandan Mehta ◽  
BS Asati ◽  
SR Mamidwar
Keyword(s):  
Plant Height ◽  
Seed Weight ◽  
Gene Action ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Additive Gene Action ◽  
Fruit Length ◽  
Additive Gene ◽  
100 Seed Weight ◽  
Number Of Seeds

Forty two hybrids generated by crossing three testers with fourteen lines were studied along with parents for studying heterosis and gene action for days to first flowering, days to 50 percent flowering, fruit weight, fruit length, plant height, number of seeds per fruit, 100-seed weight and fruit yield per plant during rainy season and summer season of 2002-03 at Department of Horticulture, Indira Gandhi Agricultural University, Raipur, Chhattisgarh, India. The most heterotic combinations were VRO-6 x Parbhani Kranti, VRO-4 x Parbhani Kranti, Daftari-1 x Arka Abhaya and Kaveri Selection x Ankur Abhaya for fruit yield per ptant. The sca variances for days to fruit flower, days to 50 percent flowering, fruit weight, fruit length, plant height, number of seeds per fruit and 100-seed weight were higher than so gca variance so there is a preponderance of non-additive gene action. The gca variances was greater than sca variances for fruit yield per plant indicating preponderance of additive gene action for this trait. Overall, the results discussed above are quite indicative of the fact that hybrid okra has great potentialities of maximizing fruit yield in Chhattisgarh plains.DOI: http://dx.doi.org/10.3329/bjar.v32i3.544Bangladesh J. Agril. Res. 32(3) : 421-432, September 2007

scholarly journals Genetic variability, correlation, path analysis and construction of selection index in mulberry silkworm, Bombyx mori L. I. Genetic variability

2012 ◽  
Vol 30 ◽  
pp. 33-36
Author(s):  
Md Ariful Hasan ◽  
Sawdagar Mahfuzar Rahman ◽  
Md Kamrul Ahsan
Keyword(s):  
Genetic Variability ◽  
Selection Index ◽  
Genetic Advance ◽  
Filament Length ◽  
Egg Hatching ◽  
Shell Weight ◽  
Gene Effects ◽  
Additive Gene ◽  
High Heritability ◽  
Mulberry Silkworm

The genotypic variability and heritability for nine quantitative characters in 65 varieties of silkworm, B. mori L. have been investigated. Variation among genotypes were highly significant (p<0.001) for all the characters indicating the existence of a real difference among the genotypes which are suitable for breeding purposes. The highest heritability was obtained for shell weight followed by filament size (FS), filament length (FL), expected cocoon yield out of 100 dfls (ECY), surviving percentage of larvae (SPL), cocoon weight (CW), egg hatching percentage (EHP) and mature larval weight (MLW). Comparatively high heritability accompanied by a genetic advance was recorded for FL and total number of eggs laid per female (TEL) indicating the importance of additive gene effects of these characters, but shell weight, cocoon weight and filament size showed high heritability and low genetic advance indicating the involvement of non-additive gene systems in the inheritance of these characters. So selection on the basis of these characters, with relatively more emphasis upon filament length and total number of eggs laid per female to obtain high yielding varieties of B. mori is suggested. DOI: http://dx.doi.org/10.3329/ujzru.v30i0.10744 Univ. j. zool. Rajshahi Univ. Vol. 30, 2011 pp.33-36

scholarly journals Genetic variability analysis for various yield attributing traits in rice genotypes

2017 ◽  
Vol 15 (1) ◽  
pp. 15-19
Author(s):  
MM Rashid ◽  
M Nuruzzaman ◽  
L Hassan ◽  
SN Begum
Keyword(s):  
Genetic Variability ◽  
Coefficient Of Variation ◽  
Block Design ◽  
Direct Selection ◽  
Genetic Advance ◽  
Randomized Complete Block Design ◽  
Additive Gene ◽  
High Heritability ◽  
Rice Genotypes ◽  
Selection For

An experiment was conducted using a randomized complete block design to estimate genetic variability of ten rice genotypes. Analysis of variance for yield and yield contributing traits showed significant (p<0.01) variation among the genotypes. Results of genetic analyses showed a higher phenotypic coefficient of variation compared to their corresponding genotypic coefficient of variation for all the traits measured, which indicates that the traits were influenced by environment. The magnitude of difference between phenotypic coefficient of variance (PCV) and genotypic coefficient of variance (GCV) was less for the traits indicating little influence of environment. The higher estimates of PCV and GCV were observed for number of filled grains panicle–1 (27.53; 26.84), number of unfilled grains panicle–1 (26.76;25.28) and plant height (23.14; 23.00) indicates possibility of genetic improvement through direct selection for these traits, while days to 50% flowering, days to maturity, panicle length, number of effective tillers plant–1, fertility (%), 1000 Seed weight and yield panicle–1 showed low PCV and GCV values indicating the need for creation of variability by hybridization or mutation followed by selection. High heritability values (>60%) along with high genetic advance and genetic advance as percentage of mean were found for all the traits indicating prevalence of additive gene action, which provides good scope for further improvement by selection.J. Bangladesh Agril. Univ. 15(1): 15-19, January 2017

scholarly journals Genetic, Heritability and Genetic Advance of Progenies Derived from Hybridization of Vanda ‘Adrienne’ × Ascocenda ‘Peggy Foo’ with Vanda malinii × Vanda denisoniana Benson & Rchb.f. in vivo

2019 ◽  
Vol 11 (2) ◽  
pp. 233-240
Author(s):  
Minangsari DEWANTI ◽  
Suskandari KARTIKANINGRUM ◽  
Mega WEGADARA ◽  
Budi WINARTO
Keyword(s):  
Genetic Variability ◽  
Phenotypic Variability ◽  
Block Design ◽  
Genetic Advance ◽  
Genetic Heritability ◽  
Randomized Complete Block Design ◽  
Additive Gene ◽  
Number Of Leaves ◽  
Crop Research

Hybridization is the process on interbreeding between individuals of different species or genetically divergent individuals from the same species to produce new progenies with their uniqueness and differences, involving in Vanda. Aim of this research was to explore genotypic and phenotypic variability, heritability and genetic advance of progenies derived from hybridization of Vanda ‘Adrienne’ × Ascocenda ‘Peggy Foo’ with Vanda malinii × Vanda denisoniana Benson & Rchb.f, and to find best characters used for selection. The experiment was conducted at Segunung Experimental Garden of Indonesian Ornamental Crop Research Institute (IOCRI) on altitude of 1100 m above sea level from June 2013 until December 2016. Thirteen genotypes derived from hybridization of V. ‘Adrienne’ × A. ‘Peggy Foo’ with V. malinii × V. denisoniana of 1A, 2A, 21A, 27A, 50A, 52A, 98A, 101A, 102A, 113A, 116A, 120A, and 120B were used in the study. The experiment was arranged in a Randomized Complete Block Design (RCBD) with three replications. Results of the study indicated that range of genetic variability was varied from 1.2-184.7% with wide genetic variability determined on number of leaves per plant (NLP) up to 26.5% with 184.7% for leaf width (LW) and 24.7% for spike length (SL). Moderate heritability of 25.2% for NLP, 21.0% for LW and 25.2% for SL coupled with high genetic advance percent of mean up to 59.7% for NLP, 939.7% for LW and 33% for SL, reflecting the presence and expression of additive gene action of these traits. The results indicated the importance of these three characters best used as selection criteria for Vanda genotypes.

scholarly journals Evaluation of Heritability and Genetic Advance for Morphological Traits of Indian Mustard Germplasms

2020 ◽  
pp. 39-47
Author(s):  
Dinesh Awasthi ◽  
Vimlesh Kumar Tiwari ◽  
V. S. Kandalkar
Keyword(s):  
Seed Yield ◽  
Seed Weight ◽  
Harvest Index ◽  
Indian Mustard ◽  
Heritability Estimate ◽  
Genetic Advance ◽  
Additive Gene ◽  
High Heritability ◽  
Level Of Significance ◽  
Number Of Seeds

Genotypic source of variations were significant for all characters in 168 genotypes including 7 checks of Indian mustard at 5% level of significance. Maximum seed yield per plant (g) and harvest index was recorded in MRNJ-82; whereas, the minimum days to 50% flowering and maturity were recorded in RVM-1 and MRNJ-5 respectively. In genotypes viz; MRNJ-36, RVM-2, MRNJ-59, JM-1, MRNJ-53 and MRNJ-35 had maximum plant height (cm), number of primary branches per plant, number of secondary branches per plant, number of siliqua per plant, number of seeds per siliqua and 1000 seed weight (g). Highest GCV and PCV were recorded for seed yield per plant which indicates for improvement through selection among these genotypes. High heritability along with high genetic advance as percentage of mean has been noticed for seed yield per plant and harvest index indicating less influence of environment and also the presence of additive, dominance and interaction among genes in the expressions of these characters. Low genetic advance along with low heritability estimate were observed for number of primary branches per plant and number of seeds per siliqua. This indicates the involvement of additive and non-additive gene actions in their inheritance.

scholarly journals Variability for agromorphological traits, genetic parameters, correlation and path coefficient analyses in Lentil (Lens culinaris Medik.)

2020 ◽  
pp. 1-7
Author(s):  
Shahida Akter ◽  
Israt Jahan ◽  
Md. Amir Hossain ◽  
Mohammad Anwar Hossain
Keyword(s):  
Seed Yield ◽  
Seed Weight ◽  
Lens Culinaris ◽  
Significant Negative Correlation ◽  
Path Coefficient ◽  
Genetic Advance ◽  
High Heritability ◽  
Positive Direct ◽  
100 Seed Weight ◽  
Number Of Seeds

Understanding phenotypic and genotypic variability of Bangladeshi lentil (Lens culinaris Medik.) in relation to exotic lentil is important in attempting to widen the genetic base of the germplasm in the country. An experiment was conducted using 30 diverse lentil genotypes to study the agromorphological and genetic variability, heritability, expected genetic advance and inter-relationship of ten yield attributing traits. The genotypes showed highly significant (p<0.01) variations for all of the studied traits. These characters also had higher phenotypic co-efficient of variation (PCV) than those of the corresponding genotypic co-efficient of variation (GCV). High heritability (ranged from 66-98%) was found among the traits. Seed yield plant-1 and number of seeds plant-1 showed high heritability accompanied with high genetic advance (as percent mean). Correlation coefficient studies revealed that number of pods plant-1, number of seeds plant-1 and 100-seed weight contributed to highly significant (p<0.01) positive correlation with seed yield plant-1. Days to 50% flowering and days to maturity were showed highly significant negative correlation with seed yield plant-1. Path analysis showed the highest positive direct effects of 100-seed weight followed by the number of secondary branches plant-1 and number of seeds plant-1 on seed yield plant-1. Days to 50% flowering via 100-seed weight contributed the highest negative indirect effect on seed yield plant-1. Maximum negative direct effect of plant height and days to 50% flowering was observed on seed yield plant-1. Results indicated that the exotic accessions could be effective for the improvement of the yield of lentil. 

scholarly journals Genetic Diversity for Yield and Its Component Traits in Chickpea (Cicer arietinum L.)

2021 ◽  
pp. 63-70
Author(s):  
Sanganamoni Srinivas ◽  
Lakmalla Vinay ◽  
Gaibriyal M. Lal
Keyword(s):  
Genetic Diversity ◽  
Present Experiment ◽  
Block Design ◽  
Genetic Advance ◽  
Mean Values ◽  
Cluster Distance ◽  
Component Traits ◽  
Additive Gene ◽  
High Heritability ◽  
Number Of Seeds

The present experiment was carried out to study the 40 chickpea genotypes to evaluate the Genetic diversity among the chickpea genotypes for yield and yield contributing traits and to identify genetically divergent parents for future hybridization. The present experiment was carried out during rabi 2019-2020 in Randomized complete block design with three replications at Sam Higginbottom university of agriculture technology and sciences, Prayagraj, Allahabad, U.P. The data was analyzed for 13 quantitative traits to study genetic variability, heritability, genetic advance, genetic advance as percent of the mean. The magnitude of genotypic coefficient of variation and phenotypic co-efficient recorded highest for a number of seeds for plant (33.31 and 34.24), high heritability associated with high genetic advance was recorded for a number of secondary branches for plant (97.11 and 59.98) suggesting that there was greater role of additive gene action in inheritance. The distribution of 40 genotypes into six clusters was by Tocher’s method at a random with the Maximum number of genotypes were grouped into cluster I which includes 29 genotypes. The highest intra-cluster distance was observed for cluster I (59.53) which comprised of 29 genotypes. The highest inter-cluster distance (407.97) was found between clusters II and VI. Genotypes (IPC-71, IPC 04-52, JG-31416, L-550, IPCK 09-165, ICC-244263, IPC 94-94 and IPC 06-11 to these clusters may be used as parents to create transgressive segregants. Cluster VI recorded maximum mean values for the number of primary branches per plant (3.67), number of secondary branches per plant (6.47), number of pods per plant (117.13), number of seeds per plant (155.53), and seed yield per plant (g) (25.94).

Sign in / Sign up

Export Citation Format

Share Document