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

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.

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

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.

scholarly journals GENETIC VARIABILITY, HERITABILITY AND GENETIC ADVANCE IN POINTED GOURD (Trichosanthes dioica Roxb.)

2007 ◽  
Vol 20 (1) ◽  
pp. 47-52
Author(s):  
M. A. Malek ◽  
M. A. Bari Miah ◽  
M. O. Islam ◽  
A. M. M. Mosiul Hoque ◽  
R. Gomes
Keyword(s):  
Genetic Variability ◽  
Coefficient Of Variation ◽  
Fruit Yield ◽  
Broad Sense ◽  
Genetic Advance ◽  
High Heritability ◽  
Trichosanthes Dioica ◽  
Pointed Gourd ◽  
Genotypic Coefficient Of Variation

Genetic variability, heritability in broad sense and expected genetic advance as percent of mean for fruit yield and nine characters were studied in 25 pointed gourd genotypes. Fruits per plant and fruit yield per plant showed maximum variability. Genotypic coefficient of variation was found high for fruit yield and number of fruits per plant. All the characters under study were highly heritable in nature. High heritability coupled with high genetic advance was observed for fruit yield and fruits per plant, which indicated that these characters are more reliable for effective selection.DOI: http://dx.doi.org/10.3329/bjpbg.v20i1.17026

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

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
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.

scholarly journals GENETIC VARIABILITY OF RICE GENOTYPES (Oryza sativa L.)

2011 ◽  
Vol 24 (2) ◽  
pp. 31-35
Author(s):  
P. C. Roy ◽  
M. G. Rasul ◽  
M. A. K. Mian ◽  
M. A. H. Molla
Keyword(s):  
Coefficient Of Variation ◽  
Oryza Sativa L ◽  
Phenotypic Variance ◽  
Genetic Advance ◽  
Environmental Variance ◽  
Additive Gene ◽  
High Heritability ◽  
Rice Genotypes ◽  
Hill Number ◽  
Genotypic Coefficient Of Variation

An attempt was made to study genotypic variance, phenotypic variance, environmental variance, genotypic coefficient of variation (GCV), phenotypic coefficient of variation (PCV), heritability (h2b) and genetic advance (GA) for some rice genotypes during July 2007 to January 2009 at BSMRAU campus, Gazipur 1706. Significant variations were obtained among the genotypes for all the characters studied. Considering genetic parameters high genotypic coefficient of variation (GCV) value was observed for harvest index followed by yield per hill, number of tillers per hill, number of filled grain per panicle, whereas days to maturity showed very low GCV. High heritability with high genetic advance (GA) observed for yield per hill followed by number of tillers per hill, number of filled grains per panicle indicated that these characters were under additive gene control and selection for genetic improvement for these traits might be effective.DOI: http://dx.doi.org/10.3329/bjpbg.v24i2.17004

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 Studies on Genetic Variability Parameter under Artificial Epiphytotic Condition for Leaf Rust in Bread Wheat (Triticum aestivum L.)

2019 ◽  
pp. 1-7
Author(s):  
Ashutosh Kumar ◽  
Yashavantha Kumar Kakanur ◽  
Suma Biradar ◽  
Srinivas A. Desai ◽  
T. N. Satisha ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Grain Yield ◽  
Bread Wheat ◽  
Coefficient Of Variation ◽  
Breeding Programme ◽  
Genetic Advance ◽  
Advanced Backcross ◽  
Slow Rusting ◽  
Component Traits ◽  
High Heritability

Present investigation was conducted to study the genetic variability for grain yield, its component traits and slow rusting component in advanced backcross segregating lines of bread wheat at AICRP on wheat, MARS, UAS, Dharwad, Karnataka during Rabi season of 2015-2016. The study revealed highly significant differences for the yield, its component traits and for slow rusting components, indicating the presence of sufficient genetic variability in these lines which is basis for the effective selection in any breeding programme. High genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) values coupled with high heritability and high genetic advance over mean were recorded for some of the studied traits such as grain yield per plant and no. of productive tillers per plant. Also high PCV and GCV along with high heritability and high genetic advance over mean (GAM) was found for the slow rusting components. The presence of sufficient variability along with high heritability for all these traits indicates that simple phenotypic selection for these traits may be effective for genetic improvement of these traits. Hence based on present findings it can be concluded that practicing selection considering the traits like productive tillers per plant, grain yield per plant along with slow rusting components will be more beneficial for achieving durable type of resistance in future breeding programme.

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

2021 ◽  
Vol 18 (2) ◽  
pp. 39-49
Author(s):  
LF Lipi ◽  
MJ Hasan ◽  
A Akter ◽  
MR Quddus ◽  
PL Biswas ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Genetic Variability ◽  
Plant Height ◽  
Quantitative Traits ◽  
Genetic Advance ◽  
Reliable Index ◽  
Genotypic Variance ◽  
Additive Gene ◽  
High Heritability ◽  
Almost All

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)

scholarly journals Genetic variability, Heritability and Genetic advance studies in Yardlong bean (Vigna unguiculata spp. sesquipedalis) genotypes

2021 ◽  
Vol 23 (2) ◽  
pp. 215-218
Author(s):  
K RAMKUMAR ◽  
Keyword(s):  
Genetic Variability ◽  
Field Experiment ◽  
Vigna Unguiculata ◽  
Coefficient Of Variation ◽  
Genetic Advance ◽  
Pod Yield ◽  
High Heritability ◽  
Yardlong Bean ◽  
The Mean ◽  
Pod Length

A field experiment was carried out at farmer field in Pudukurapettai village, Virudhachalam, Tamilnadu during 2019 to study genetic variability, heritability and genetic advance expressed as per cent of mean for yield and yield attributing characters in thirty three genotypes of yardlong bean. The mean performance recorded on days to first flowering was in the range of (46.78 to 57.33 days), vine length (196.76 to 386.32 cm), days to first picking (57.33 to 67.53 days), pod length (14.18 to 60.08 cm), pod width (1.76 to 3.43 cm), fresh pod weight (171.43 to 995.45 g), number of pods per plant (26.53 to 56.40), number of picking (10.00 to 14.20) and pod yield per plant (171.43 to 995.45 g). The genotypic and phenotypic coefficient of variation showed higher value for pod yield per plant (46.69 % and 46.70 %), fresh pod weight (42.27 and 42.28 %) and pod length (41.66 and 41.66 %). High heritability was observed for the all nine characters. Genetic advance as per cent of mean was higher for pod yield per plant (96.18 %), fresh pod weight (87.08 %), pod length (85.81 %), vine length (36.93 %), pod width (34.16 %) and number of pods per plant (30.04 %).

Study on genetic variability, heritability and genetic advance in Soybean[Glycine max (L.) Merrill]

2017 ◽  
Author(s):  
Ravindra Kumar Jain ◽  
Arunabh Joshi ◽  
Hem Raj Chaudhary ◽  
Abhay Dashora ◽  
Champa Lal Khatik
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Coefficient Of Variation ◽  
Harvest Index ◽  
Block Design ◽  
Crop Improvement ◽  
Test Weight ◽  
Genetic Advance ◽  
High Heritability ◽  
Weight Number

Soybean, an important legume crop, serves as a good source of protein and oil with tremendous ability to fix atmospheric nitrogen for soil improvement. To study the genetic variability, genotypic, phenotypic and environmental coefficient of variation, broad sense heritability and genetic advance in soybean, a field experiment was conducted during Kharif 2013. The experiment, laid out in a randomized block design (RBD) with three replications, comprised of 24 genotypes and observations on 9 traits of soybean were recorded. In this experiment, analysis of variance indicated that significant variation were present among the different genotypes of the soybean for all the traits under study. The highest genotypic (GCV) and phonotypic coefficient of variation (PCV) were exhibited by the test weight, number of pods per plant, harvest index and plant height. The PCV was found higher than GCV which indicates the important role of environment in the expression of the characters. High heritability and high genetic advance were observed in the test weight, number of pods per plant, harvest index and plant height. The combination of the high heritability and high genetic advance provide the clear image of the trait in the selection process for crop improvement programme.

scholarly journals Evaluation of durum wheat (Triticum turgidum) genotypes for genetic variability, heritability, genetic advance and correlation studies

2020 ◽  
Vol 3 (2) ◽  
pp. 150-159
Author(s):  
Geleta Gerema
Keyword(s):  
Genetic Variability ◽  
Grain Yield ◽  
Durum Wheat ◽  
Coefficient Of Variation ◽  
Triticum Turgidum ◽  
Kernel Weight ◽  
Genotypic Differences ◽  
Genetic Advance ◽  
Breeding Programmes ◽  
High Heritability

The present investigation was undertaken to study the genetic variability, heritability and correlation coefficient analysis for 7 metric traits in 12 durum wheat genotypes at western Oromia during 2015-2018. Significant genotypic differences were observed for the majority traits studied, indicates considerable amount of variation among genotypes for each character. The estimates of genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) were high for kernels per spikelet, thousand kernels weight, and number of kernels per spike and grain yield. The remaining traits were ranged from low to moderate estimates. High heritability estimates were recorded for the majority traits studied.  The estimated broad – sense heritability (h2) has ranged from 31.6% for maturity to 80.8% for grain yield. High genetic advance combined with high heritability was recorded for plant height, thousand kernel weight, kernels per spike and grain yield, indicates that most likely selection based on phenotype of genotypes could be effective to improve these characters. Grain yield was positively and significantly correlated with spike length, kernels per spike and thousand kernels weight both at genotypic and phenotypic levels. The strong correlation of grain yield with the mentioned traits showed that grain yield could be indirectly improved through improving these traits. This information might be used in the genetics and breeding programmes for improvement of durum wheat.

Sign in / Sign up

Export Citation Format

Share Document