Studies on Genetic Variability, Heritability and Genetic Advance in Pumpkin (Cucurbita moschata Duch ex Poir.)

Srikanth, M.; Bharad, S.G.; Thulasiram, L. B.; Potdukhe, N. R.

doi:10.20546/ijcmas.2017.606.166

Cited by 6 publications

(6 citation statements)

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“…Similarly, in the present experiment, the characters resembling vitamin A, cavity length, carbohydrates, 100 seed weight, fruit yield per plant, the number of fruit per plant, total fruit yield, polar circumference, equatorial circumference, the number of seed per fruit, flesh thickness, average fruit weight, days to first staminate flower anthesis, and vine length, high heritability with high genetic advance or genetic gain indicated that these characters are beneath additive gene effects and hence these characters are more dependable for effective selection (Panse, 1957). These results were in conformity with Kumar et al (2017), Srikanth et al (2017), Mahmud et al (2016). High heritability joined with a moderate genetic gain was recorded for the number of primary branches/plant, node bearing first staminate flower, total soluble solids, and days to first fruit harvest reported with Kumar et al (2017).…”

Section: Resultssupporting

confidence: 93%

“…Variability among all the genotypes for these characters for making further improvement by selection. These outcomes were in conformity with Sultana et al (2015), Kumar et al (2011), Srikanth et al (2017; Shrikant et al (2017) and Kumar et al (2017). However, the moderate GCV was recorded in case of total soluble solids, vine length equatorial circumference, node bearing first staminate flower and polar circumference.…”

Section: Resultssupporting

confidence: 84%

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Characterization of pumpkin (Cucurbita moschata Duch. Ex. Poir.) germplasm through genetic variability, heritability and genetic advance

2021

EJPB

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Twenty five pumpkin germplasm from the north eastern region were evaluated for twenty traits for the genetic variability, heritability and genetic advance. The results revealed that analysis of variance showed that there was a highly significant variation for all of the considered characters. In the present investigation, PCV was recorded higher than the GCV for all the characters indicating the considerable modifying effect of environment in the expression of all characters studied. The highest PCV and GCV was observed for vitamin A (PCV=86.27%, GCV=86.23%) followed by cavity length (PCV=35.52%, GCV=34.24%) and 100 seed weight (PCV=30.04%, GCV=29.37%). The maximum estimate of heritability (in the broad sense) recorded for vitamin A (100%) followed by cavity length (98%), carbohydrates (98%), 100 seed weight (96%) and fruit yield per plant (95%). The highest genetic advance as per cent of mean was observed for the characters vitamin A followed by cavity length, 100 seed weight and fruit yield per plant. Therefore, keeping the above point of view the genotypes could be select for the further breeding programme.

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Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 84%

Characterization of pumpkin (Cucurbita moschata Duch. Ex. Poir.) germplasm through genetic variability, heritability and genetic advance

2021

EJPB

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“…Lower heritability values for internode length and mean FFT were observed by Srikanth, Bharad, Thulasiram, and Potduke (2017) using 23 pumpkin genotypes. In contrast, close heritability values for NF and FFT were found in a study of pumpkin lines (Bezerra Neto et al., 2006) and for total seed mass in seven pumpkin genotypes (Blank et al, 2013).…”

Section: Resultsmentioning

confidence: 70%

Multitrait selection of pumpkin genotypes aimed at reducing the growth habit and improving seed production

et al. 2021

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Pumpkin (Cucurbita moschata Duchesne) has high food importance due to the high nutritional value of its fruit and seeds. Its seed oil is composed of ∼70% unsaturated fatty acids, and its production can be improved by increasing the number of plants per area. Pumpkin plants with reduced growth habits can be grown in shorter spacing and produce smaller fruits, but have a greater quantity of fruits per area. This study aimed to select from F2, BC1:1, and BC1:2 populations pumpkin genotypes with shorter internodes and higher seed productivity for oil production using the factor analysis and ideotype design (FAI‐BLUP) selection index. An augmented block design (ABD) was used with four replications. The traditional model of ABD analysis was compared with the spatial model to verify the presence of errors in the local and global trends in the experimental area. There was a significant difference for all traits evaluated in both the ABD and spatial models. Based on the Akaike information criterion, the model with the best fit for all characteristics was the ABD, which was efficient in guaranteeing the independence of the residues and the absence of errors in local and global trends. In general, the characteristics expressed high values of individual heritability and accuracy. Three common factors explained the seven characteristics studied, presenting a variability of 70.98%. Six of the seven characteristics showed desirable gains of up to 63.85%. The FAI‐BLUP index allowed the selection of superior pumpkin genotypes with a smaller size and higher seed productivity for oil production.

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“…(Parikh et al, 2012;Oliveira et al, 2016). Aruah et al (2010) and Srikanth et al (2017) reported significant variations in most characters, while Fukrei et al (2011) and Mladenovic et al (2014) in all characters in pumpkins.…”

Section: Morphological Variabilitymentioning

confidence: 94%

Multivariate analysis techniques reveal significant morphogenetic variability in pumpkin landraces in Kenya

2018

Int. J. Biosci.

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Documented information on naturalized pumpkin landraces in Kenya to identify useful variability is insufficient.The present study assessed variability using quantitative characters of 155 accessions, with 70 and 85 from Kakamega and Nyeri regions, respectively. The accessions were grown in one farm in a completely randomized design with three replications. Analysis of variance showed significant (P<0.05) variation in all characters.Lowest and highest variables in mean and range were leaf length/width ratio and seed number that were 0.8 and 0.4, and 837 and 4,111, respectively. Eight factors accounted for 79.4% of total variation. The highly variable factors were fruit flesh thickness, length, width and length/width ratio, size, total weight, average weight and number, as well as seed number, 100-seeds weight, length, width, and thickness. Phenotypic coefficients of variation (PCV) were slightly higher or equal to genotypic ones (GCV). High GCV and PCV, heritability and genetic gain resulted for fruit size, total fruit weight, fruits and seeds. Over 70 positive correlations in fruit size, number and seeds with total fruit weight were observed in genotypic and phenotypic variabilities. Maximum positive direct effects on total fruit weight were observed in seeds, fruit average weight, length, and size, while indirect effects were observed in fruit number, flesh thickness, length, peduncle length and days to first flower.Multivariate analysis revealed fruit size, number, total weight, and seeds were characters of great genetic variability, which should be considered as primary components for achieving high yields in pumpkins when screening accessions for selection and improvement.

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Studies on Genetic Variability, Heritability and Genetic Advance in Pumpkin (Cucurbita moschata Duch ex Poir.)

Cited by 6 publications

References 0 publications

Characterization of pumpkin (Cucurbita moschata Duch. Ex. Poir.) germplasm through genetic variability, heritability and genetic advance

Characterization of pumpkin (Cucurbita moschata Duch. Ex. Poir.) germplasm through genetic variability, heritability and genetic advance

Multitrait selection of pumpkin genotypes aimed at reducing the growth habit and improving seed production

Multivariate analysis techniques reveal significant morphogenetic variability in pumpkin landraces in Kenya

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