Studies on Genetic Variability, Heritability and Genetic Advance for  Growth, Yield and Quality Parameters among Orange Flesh Sweet Potato  [Ipomoea batatas (L.) Lam.] Genotypes

Badu, Meenakshi; Ashok, P; Patro, T.S.K.K. Kiran; Sasikala, K.

doi:10.20546/ijcmas.2017.609.233

Cited by 10 publications

(16 citation statements)

References 3 publications

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“…The above findings indicated that the characters with the high and moderate heritability and genetic advance can be considered for direct selection for improvement. These results are in agreement with the results of Engida et al, (2006); Shashikanth et al, (2008); Madawal et al, (2015); Demelie and Aragao (2016) and Badu et al, (2017) in sweet potato.…”

Section: Resultssupporting

confidence: 93%

Assessment of Variability, Correlation and Response to Selection in Four Cultivars of Sweet Potato "Ipomia batata, L." under Alexandria Environmental Condition

Gehan¹

2019

Alexandria Journal of Agricultural Sciences

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The efficiency of two cycles of clonal selection on some economical characters in four different varieties of sweet potato (Abbies, Mabrouka, Beaurogard and local Nigerian variety) were studied. The magnitude of variability, heritability and response to selection, as well as phenotypic correlation coefficients among all possible pairs of the studied characters were measured. This work was carried out at the Experimental Station Farm (at Abies), Faculty of Agriculture, Alex. Univ., Alex. Governorate, Egypt during three summer seasons of 2016-2018. The obtained results illustrated generally that the estimated coefficients of variability and ranges of the studied characters of the four cultivars original populations reflected high and enough variability, which suggested high possibilities of conducting successful and efficient selection. This lead to produce improved cultivar with better performance than its original population. Also, the results demonstrated, in general, that two cycles of clonal selection exhibited high efficiency for improving all studied characters with different rates, compared with the original population. The estimated values of heritability (h 2 bs) for the various studied characters were found to be high for dry matter and very low for root diameter. The highest estimates of genetic advance as percentage of mean were obtained for root number-1 plant 99.7%, root weight plant-1 89.0 %, root length 77% and vine length 69.2%. The results also, revealed that phenotypic clonal selection was ended up with populations that have improved root number plant-1 for Abbies, Mabrouka and beaurogard by 77.87 %, 101.9% and 51.71%, respectively, in respect to the original population. The increment over original population for fruit number plant-1 in Nigerian variety was observed in C 1 population which reached 53%. Meanwhile, the results also demonstrated that Abbies produced the maximum number of tubers plant-1 (5.87 tubers) and the highest root weight plant-1 was observed in Beaurogard (1.67 kg/ plant). Moreover, Abbies variety had the highest values for dry matter, TSS and carotene content and it was statistically different from the remaining three sweet potato varieties. Furthermore, correlation estimates revealed significant associations among the various pairs of the studied characters. These findings appeared to be desirable for achieving the objectives of the selection in the present study. Accordingly, improving roots yield and its components of sweet potato can be achieved through purification of the most important and commercial cultivars to produce improved clones through clonal selection program.

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Section: Resultssupporting

confidence: 93%

Assessment of Variability, Correlation and Response to Selection in Four Cultivars of Sweet Potato "Ipomia batata, L." under Alexandria Environmental Condition

Gehan¹

2019

Alexandria Journal of Agricultural Sciences

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“…The present experimental material exhibited a wide range of variation for high values of genotypic and phenotypic coefficient of variations were recorded for traits viz., number of tuber per vine, weight of tuber, tuber yield per vine, ascorbic acid and total sugar. The findings of these characters were supported by number of root tuber per vine (Badu et al, 2017) in sweet potato, weight of corm (Yadav et al, 2007) in colocasia, tuber yield per plant (Ramachandra and Srinivasa, 2017) in potato. The present research work reveal that phenotypic coefficient of variation is higher than genotypic coefficient of variation for all the characters indicating influence of environment.…”

Section: Variability Parametersmentioning

confidence: 85%

Genetic Variability Analysis in Greater Yam (Dioscorea alata L.) in Southern Rajasthan Conditions

dna¹,

Ameta²,

Kaushik³

2020

Int.J.Curr.Microbiol.App.Sci

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“…Yield component and yield data were transformed with square root (SQRT data + 0.5) before the analyses of variance. The estimation of the genetic parameters included: (a) genotypic coefficient of variation (CVg) and phenotypic coefficient of variation (CVp), (b) heritability (h 2 ) that was categorized as low when h 2 was <20%, moderate when h 2 was 20-50% and high when h 2 was >50% (Singh & Chaudhary, 1977), (c) genetic advance (GA) and the percentage of genetic advance based on average (GAM), as used by Agrawal & Kumar (2017) and Badu, Ashok, Kiran Patro, & Sasikala (2017) at k= selection diferential 5%=2.06, that was categoried as low (<10%), moderate (10-20%) and high (>20%), and (d) genotypic correlation coefficient (r g(xy) ) and phenotypic correlation coefficients (r p(xy) ) with t test for the significance of the correlation test (Singh & Chaudhary, 1977…”

Section: Methodsmentioning

confidence: 99%

Selection Indicators of Yield Components and Yield for Improvement of Local Sweet Potato under Water Stress

et al. 2021

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Genetic diversity is required for crop improvement against environmental stress. Astudy wasconducted to determine characters as selection indicators of water-stress tolerance, and of yield components and yield. The research method involved a one-factor experiment with 21 sweet potato clones, using a Completely Randomized Block design with three replicates. Water stress in this study mean that the bottom of plants was submerged in water at 2 and 3 months of age. Determination of selection indicators was conducted by estimating the coefficients of genetic and phenotypic variations, heritabilities, genetic advance and correlation test result. The characters of number of leaves, individual leaf area, leaf area per plant, leaf area index, stem length, internode length, number of tubers (storage root), individual tuber weight and yieldas selection indicators of water stress tolerance. Selection indicators of yield components consisted of less number of leaves, small leaf size, short stemsand number of branches, whereas selection indicators of yield were small leaf size, number of branches, number of tubers and individual tuber weight. Selection became effective and efficient when the selection indicators were influenced greatly by genetic factors.

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Studies on Genetic Variability, Heritability and Genetic Advance for Growth, Yield and Quality Parameters among Orange Flesh Sweet Potato [Ipomoea batatas (L.) Lam.] Genotypes

Cited by 10 publications

References 3 publications

Assessment of Variability, Correlation and Response to Selection in Four Cultivars of Sweet Potato "Ipomia batata, L." under Alexandria Environmental Condition

Assessment of Variability, Correlation and Response to Selection in Four Cultivars of Sweet Potato "Ipomia batata, L." under Alexandria Environmental Condition

Genetic Variability Analysis in Greater Yam (Dioscorea alata L.) in Southern Rajasthan Conditions

Selection Indicators of Yield Components and Yield for Improvement of Local Sweet Potato under Water Stress

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