Genetic Variation, Heritability and Genetic Advance in Some Promising Rice Hybrids

Eleven rice hybrids including two check varieties were evaluated to approximate their genetic variability, heritability and genetic advance for ten quantitative traits. The analysis of variance illustrated that all the quantitative traits differed significantly indicating that enough variation is presenting the studied materials. Among the desirable quantitative traits number of filled spikelet’s per panicle was found to have highest both phenotypic and genotypic variance followed by total number of spikelet’s per panicle. Almost all the characters showed a little variation between PCV and GCV revealing little influence of the environment on the expression of traits. High phenotypic and genotypic variance coupled with high heritability and high genetic advance was observed for number of filled spikelet’s per panicle, total number of spikelet’s per panicle, plant height and number of unfilled spikelet’s per panicle. Such findings stipulated that these traits were governed by additive gene actions which are fixable and these traits may be accounted for reliable index of selection. The genotypes G3 (IR79156A × EL108R) and G6 (IR79156A × EL253R) were selected as high response superior promising rice hybrids for achievable yield advantage 49% and 23%, respectively over best check varieties. Therefore, the G3 and G6 are proposed to be extensively evaluated for further trial of variety release. SAARC J. Agri., 18(2): 39-49 (2020)

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Genetic evaluation and characterization of jute (Corchorus spp. L) genotypes using DUS

SAARC Journal of Agriculture ◽

10.3329/sja.v10i2.18335 ◽

2014 ◽

Vol 10 (2) ◽

pp. 147-153 ◽

Cited By ~ 1

Author(s):

A Das ◽

D Kumar

Keyword(s):

Plant Height ◽

Seed Weight ◽

Quantitative Traits ◽

Genetic Advance ◽

High Heritability ◽

Qualitative Characters ◽

Fibre Fineness ◽

Almost All ◽

Varietal Characterization

In this study 32 jute (Corchorus spp.) varieties comprised of 18 olitorius and 14 capsularis were evaluated and characterized for five quantitative and 12 qualitative characters as per revised official DUS Test Guidelines of Jute. The experimental materials were grown in a RBD with three replications at Baarrackpore, India during 2009-10. Significant differences among genotypes noted almost for almost all the quantitative traits. PCV and GCV were highest for 1000 seed weight (33.78 and 33.29%) followed by fibre fineness (27.11 and 26.70%). Low variability was recorded in case of plant height. All the five characters exhibited more or less high heritability coupled with high genetic advance as per cent over mean. Out of 12 qualitative characters studied, in C. capsularis 8 traits were monomorphic, 4 traits were dimorphic. However, in C. olitorius no trait was monomorphic, 6 traits were dimorphic and 6 traits were polymorphic among varieties indicating their potential for varietal characterization. DOI: http://dx.doi.org/10.3329/sja.v10i2.18335 SAARC J. Agri., 10(2): 147-153 (2012)

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Genotypic and phenotypic variability in mango (Mangifera indica L.)

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v37i4.14393 ◽

2013 ◽

Vol 37 (4) ◽

pp. 683-690

Author(s):

DAN Majumder ◽

L Hassan ◽

MA Rahim ◽

MM Kabir

Keyword(s):

Fruit Set ◽

Phenotypic Variability ◽

Mangifera Indica ◽

Genetic Advance ◽

Coefficients Of Variation ◽

Shoot Number ◽

Additive Gene ◽

High Heritability ◽

Almost All ◽

Fruit Harvest

Sixty mango genotypes were studied to find out their variability, heritability, and genetic advance. Significant variations were observed in 20 characters. There were also considerable differences between the genotypic and the phenotypic coefficients of variation for almost all the characters which indicated the influence of environment on the expression of these traits. Among the studied characters, GCV and PCV were high for weight of harvested fruits per plant, % fruit harvest per inflorescence, % initial fruit set per inflorescence, number of fruits per plant and number of main branches per inflorescence. All the characters showed considerably high heritability which ranged from 56.21 to 98.24% and the genetic advance (as % of mean) was high for the maximum traits. High heritability coupled with high genetic advance was observed in weight of harvested fruits per plant, % initial fruit set per inflorescence, % of flowering shoot, number of inflorescences per shoot, percent fruit harvest per inflorescence, number of main branches per inflorescence, number of fruits per plant, number of inflorescences per shoot, plant height (cm), and percent perfect flowers which indicated that these characters were less influenced by environment confirming predominance of additive gene action and therefore, selection in favour of these characters would be feasible for yield improvement of mango. DOI: http://dx.doi.org/10.3329/bjar.v37i4.14393 Bangladesh J. Agril. Res. 37(4): 683-690, December 2012

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Genetic Variability and Its Implications on Early Generation Sorghum Lines Selection for Yield, Yield Contributing Traits, and Resistance to Sorghum Midge

International Journal of Agronomy ◽

10.1155/2018/1864797 ◽

2018 ◽

Vol 2018 ◽

pp. 1-10 ◽

Cited By ~ 1

Author(s):

Massaoudou Hamidou ◽

Abdoul Kader M. Souley ◽

Issoufou Kapran ◽

Oumarou Souleymane ◽

Eric Yirenkyi Danquah ◽

...

Keyword(s):

Genetic Variability ◽

Grain Yield ◽

Plant Height ◽

Coefficient Of Variation ◽

Resistant Variety ◽

Genetic Advance ◽

Planting Dates ◽

Sorghum Midge ◽

High Heritability ◽

Panicle Weight

Sorghum is the second most important cereal crop in Niger. The crop is grown in a wide range of ecological environments in the country. However, sorghum grain yield in Niger is limited by both abiotic and biotic constraints. Recombinant inbred lines derived from the cross of a local variety with a midge resistant variety and two local checks were evaluated during the 2015 rainy season across two planting dates in two environments in Niger. The objective was to investigate genetic variability for yield, yield related traits, and resistance to sorghum midge. High phenotypic coefficient of variation (PCV) versus genotypic coefficient of variation (GCV) was observed in both sites and planting dates. Across planting dates at both Konni and Maradi, grain yield, plant height, panicle weight, and midge damage had high heritability coupled with high estimates of genetic advance. At Konni, high genetic advance coupled with high heritability was detected for grain yield, plant height, panicle weight, and resistance to midge. There were similar results at Maradi for grain yield, plant height, and panicle weight. Therefore, selection might be successful for the above characters in their respective environments.

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Genetic variability studies for yield and its contributing traits in okra [Abelmoschus esculentus (L.) Moench]

Journal of Applied and Natural Science ◽

10.31018/jans.v8i3.1014 ◽

2016 ◽

Vol 8 (3) ◽

pp. 1634-1637

Author(s):

Pravin Kumar Sharma ◽

D. P. Mishra ◽

Amit Pandey

Keyword(s):

Genetic Variability ◽

Plant Height ◽

Coefficient Of Variation ◽

Fruit Weight ◽

Abelmoschus Esculentus ◽

Genetic Advance ◽

Wide Range ◽

High Heritability ◽

Range Of Variation ◽

Genotypic Coefficient Of Variation

The experiment comprising 30 okra (Abelmoschus esculentus) genotypes were grown and analysed for yield and its attributing traits at the Department of Vegetable science, Kumarganj, Faizabad during Zaid (2011) period. All the characters studied showed a wide range of variation. The variability for yield among the accessionsevaluated was also remarkable. The magnitude phenotypic coefficient of variation was higher than genotypic coefficient of variation for all traits. Both phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were high for plant height (11.10 and 10.60, respectively). Fruit weight exhibited low value of GCV (2.31) and PCV (4.74) and likely to show less response under selection. High heritability (91.3) with high genetic advance (26.74) was recorded for plant height, whereas, ridges per fruit had high heritability (97.0) with moderate genetic advance (18.45). This study aimed to evaluate okra genotypes for variability with a view to providing information on the development of high yielding genotypes to meet the growing food demand of the populace.

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

University Journal of Zoology Rajshahi University ◽

10.3329/ujzru.v30i0.10744 ◽

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

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Genetic variability analysis for various yield attributing traits in rice genotypes

Journal of the Bangladesh Agricultural University ◽

10.3329/jbau.v15i1.33525 ◽

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 panicle1 (27.53; 26.84), number of unfilled grains panicle1 (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 plant1, fertility (%), 1000 Seed weight and yield panicle1 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

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Genetic variability parameters of yield and quality attributes in vegetable pea (Pisum sativum L.)

Genetika ◽

10.2298/gensr1801153s ◽

2018 ◽

Vol 50 (1) ◽

pp. 153-170

Author(s):

Jaskanwal Singh ◽

R.K. Dhall

Keyword(s):

Genetic Variability ◽

Seed Yield ◽

Genetic Advance ◽

Yield And Quality ◽

Pisum Sativum L ◽

Coefficients Of Variation ◽

Additive Gene ◽

High Heritability ◽

Very High

A field experiment was conducted to study the genetic variability, heritability and genetic advance of 24 morphological traits and three biochemical traits in 47 genotypes of vegetable pea. The analysis of variance showed significant differences among genotypes for all the characters under study. Highest coefficient of variation was observed for number of podding nodes per plant and highest phenotypic and genotypic coefficients of variation were recorded for seed yield per plant followed by number of primary branches per plant and green pod yield per plant. Very high heritability estimates were observed for days to last pod picking (97.63) followed by plant height (97.40), days to first pod picking (96.78) and shelling percentage (95.56) while genetic advance as percentage of mean was found high for seed yield per plant (65.95) and primary branches per plant (58.40). High heritability along with moderate to high genetic advance was predicted in case of pod weight and number of seeds per pod, which indicated the role of additive gene action for the inheritance of these traits and therefore, selection could be used for improving these traits.

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Field Performance and Genetic Analysis in Some Advanced Lines of Mustard (Brassica rapa L.)

The Agriculturists ◽

10.3329/agric.v14i1.29109 ◽

2016 ◽

Vol 14 (1) ◽

pp. 112-121

Author(s):

Md. Arif Hussain ◽

Md. Sarowar Hossain ◽

Md. Shahidur Rashid Bhuiyan ◽

Naheed Zeba ◽

Sayed Mohammad Mohsin

Keyword(s):

Genetic Variability ◽

Brassica Rapa ◽

Field Performance ◽

Genetic Advance ◽

Genotypic Variance ◽

High Heritability ◽

Moderate Difference ◽

Selection For ◽

Thousand Seed Weight ◽

Number Of Seeds

Twenty four genotypes including four check varieties of mustard (Brassica rapaL.) were collected for estimating the genetic variability, heritability, genetic advance of different characters related to the yield and yield components. The experiment was conducted at the Sher-e-Bangla Agricultural University research farm, Dhaka during 2013-2014. Days to 50% flowering and days to 80% maturity showed moderate difference between the phenotypic and genotypic variance whereas, minimum differences were found in number of primary branches plant-1, number of secondary branches plant-1, number of seeds siliqua-1, siliqua length and thousand seed weight and yield plant-1. Number of secondary branches plant-1 showed high heritability coupled with high genetic advance in percentage of mean. On the other hand, days to 50% flowering, no. of siliqua plant-1, yield plant-1 showed high heritability with moderate genetic advance in percentage of mean. Days to 80% maturity, no. of primary branches plant-1, no. of seeds siliqua-1 showed high heritability coupled with low genetic advance in percentage of mean. The study showed that variations in the extent of genetic variability, heritability and genetic advance in traits under study which can facilitate selection for further improvement of important traits of Brassica rapa L.The Agriculturists 2016; 14(1) 112-121

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Analysis of genetic variability, heritability and genetic advance for yield and yield associated traits in some promising advanced lines of rice

Progressive Agriculture ◽

10.3329/pa.v26i1.24511 ◽

2015 ◽

Vol 26 (1) ◽

pp. 26-31 ◽

Cited By ~ 1

Author(s):

MA Islam ◽

SA Raffi ◽

MA Hossain ◽

AK Hasan

Keyword(s):

Genetic Variability ◽

Block Design ◽

Grain Weight ◽

Genetic Advance ◽

Thousand Grain Weight ◽

Randomized Complete Block Design ◽

Days To Maturity ◽

Additive Gene ◽

High Heritability ◽

Grain Width

A field experiment was conducted using twenty three rice genotypes including three check varieties during the period from June to December, 2013, at the Agronomy Field Laboratory, Department of Agronomy, Bangladesh Agricultural University, Mymensingh to study genetic variability, heritability and genetic advance (GA) for yield and yield associated traits in rice. The experiment was laid down in a randomized complete block design with three replications. Plant height, number of filled grains per panicle, days to 50% flowering, thousand grain weight, grain width and grain yield showed relatively high genotypic co-efficient of variation (GCV) and phenotypic co-efficient of variation (PCV) estimates. The PCV were higher than GCV for all eight traits indicating that they all interacted with the environment to some extent. High heritability was obtained for grain width (88.54%), followed by days to 50% flowering (87.61%), thousand grain weight (81.96%), grain length (81.94%), days to maturity (81.81%) and number of filled grains per panicle (78.19%) which indicates high heritable portion of variation. High to medium estimates of heritability and genetic advance were obtained for number of filled grains per panicle (18.97), days to 50% flowering (11.89), days to maturity (12.16) indicating the roles of additive gene action and a good scope of selection using their phenotypic performance. Considering, all of these characters, filled gains per panicle and days to 50% flowering and maturity were important yield related traits and could be used for selection in rice breeding programs.Progressive Agriculture 26:26-31, 2015

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Estimation of Genetic Variability, Heritability and Genetic Advance in Potato (Solanum tuberosum L.) Genotypes for Tuber Yield and Yield Related Traits

Turkish Journal of Agriculture - Food Science and Technology ◽

10.24925/turjaf.v9i12.2124-2130.4301 ◽

2021 ◽

Vol 9 (12) ◽

pp. 2124-2130

Author(s):

Awoke Ali Zeleke ◽

Tiegist Dejene Abebe ◽

Baye Berihun Getahun

Keyword(s):

Genetic Variability ◽

Specific Gravity ◽

Late Blight ◽

Coefficient Of Variation ◽

Quantitative Traits ◽

Tuber Yield ◽

Genetic Advance ◽

High Heritability ◽

Improvement Programs ◽

Genotypic Coefficient Of Variation

Potato is a high potential food security crop in Ethiopia. Genetic variability is the basis of all crop improvement programs. The study was conducted at Adet in 2018 with the objective of assessing the extent and pattern of genetic variability of potato genotypes for yield and yield related traits. A total of 36 potato genotypes were evaluated for 18 quantitative traits in simple lattice design. The analysis of variance revealed that highly significant difference among the tested potato genotypes for all quantitative traits except stem number per hill. The phenotypic coefficient of variation was ranged from 4.56 to 56.01% (for specific gravity and unmarketable tuber yield ha-1 respectively) and the genotypic coefficient of variation was ranged from 2.32 to 40.66% (specific gravity and late blight severity percentage respectively). Days to attain 50% emergence, leaf area index, number of marketable and total tubers per plant, marketable and total tuber yield ha-1, and late blight severity percentage showed high heritability and high genetic advance as percent of mean. Most of the traits had high phenotypic coefficient of variation and genotypic coefficient of variation; and coupled high heritability with high genetic advance as percent of mean. Traits having high heritability and high genetic advance as percent of means is effective for simple selection.

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