Determination of genetic divergence in pointed gourd by principal component and non-hierarchical euclidean cluster analysis

Verma, Priyanka; Maurya, S. K.; Yadav, Hridesh; Panchbhaiya, Ankit

doi:10.31018/jans.v9i4.1548

Cited by 3 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, they should be considered in maize improvement program in derived savannah agroecology. Principal component analysis has been successfully used for explaining observed variations in germplasms of Vigna unguiculata (Ansah et al, 2016), Telfairia occidentalis (Chukwdi and Agbo, 2016), Cucumis sativus L. (Ene et al, 2016), pointed gourd (Verma et al, 2017).…”

Section: Principal Component Analysismentioning

confidence: 99%

Environmental impact and genetic expressions of new drought tolerant maize genotypes in derived savannah agro-ecology

et al. 2021

View full text Add to dashboard Cite

DOI: 10.15835/nsb13110691 Reduced water resources in sub-Saharan Africa will not only pose threat to the livelihood of poor resource farmers, but also food security in the region. Drought tolerant (DT) maize varieties hold promise to reducing poor resourced farmers’ vulnerability and improve food security in sub-Saharan Africa. Ten maize genotypes obtained from the International Institute of Tropical Agriculture (IITA), were evaluated in 2015 and 2016 using a randomized complete block design experiment with three replications to estimate their genetic variability and predict their genetic advances in the derived savannah agro-ecology. Growth, phenological and yield data were collected from 10 middle row plants. Genetic advance, genotypic, phenotypic and environmental coefficients of variations and their variances were estimated. Principal component and hierarchical cluster analyses were also performed. The dendrogram showed that at 80% dissimilarity point, the genotypes were grouped into clusters A, B and C in both years. The first two principal components explained 91.8% and 93.3% of the total variation in 2015 and 2016, respectively. Number of grains cob-1, plant height and number of days to physiological maturity were consistent in explaining the variations observed in the maize population. Heritability estimates in broad sense ranged from 1.35% for number of leaves to 87.43% for grain yield per hectare. The genetic parameters studied showed significant variations among the growth, phenological and yield data collected that warrants selection and maize improvement program using the DT maize inbred lines in derived savannah agro-ecology.

show abstract

Section: Principal Component Analysismentioning

confidence: 99%

Environmental impact and genetic expressions of new drought tolerant maize genotypes in derived savannah agro-ecology

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Days to first female flowering, days to first male flowering, days to first fruit harvest and number of fruits per plant were exhibited the oppositional narrow from the graph (Fig 2) that PC1 exhibited the greatest variation compared to the other eleven PCs; consequently, the selection of lines for characters under PC1 may be desired. Verma et al (2017) also reported a similar curve line in pointed gourd accessions.…”

Section: Pca Analysismentioning

confidence: 57%

Unraveling the Relationship between Fruit Yield and Yield Related Components in Snake Gourd Genotypes using Multivariate Analysis

Fathima¹,

Pugalendhi²,

Saraswathi³

et al. 2023

ASD

View full text Add to dashboard Cite

Background: Snake gourd is a monoecious crop that prefers cross pollination. Snake gourd has a lot of potential for genetic improvement. A large variation can be produced when genetically diverse and geographically distant lines are combined. To examine the genetic diversity and connection between essential agronomic features in snake gourd, multivariate methods such as principal component analysis and cluster analysis were used. This study will use multivariate analysis to determine the genetic diversity and link between critical agronomic aspects of snake gourd. Methods: A total of sixteen genotypes and two varieties of snake gourd genotypes were subjected to boxplot, principal component analysis and cluster analysis based on eleven quantitative traits. Boxplot analysis, Principal component analysis and cluster analysis were performed using R version of 4.2.1. Result: Boxplot analysis depicted the frequency distribution of eleven quantitative traits among 18 snake gourd accessions. The overall variation was split into eleven principal components, out of which five major principal components contributed for variability of snake gourd genotypes by exhibiting 90.05 per cent of variability. The squared cosine variables inferred that the traits viz., days to first male flowering, days to first female flowering and days to first harvest contributed more for variability in the first component. The ward D2 method of hierarchical clustering cluster the 16 genotypes and 2 varieties in two clusters based on cluster sum of squares.

show abstract

“…The remaining four (4) genotypes were equally distributed among the remaining four clusters. Verma et al (2017) in an experiment on pointed gourd categorized into seven clusters as per the D 2 value of thirty nine genotypes of pointed gourd. The present study indicated that the locational distribution of different genotypes were not related to genetic variation as the genotypes collected from same location were grouped into different distinct cluster.…”

Section: Resultsmentioning

confidence: 99%

Variation of fruit morphology and genetic divergence of indigenous pointed gourd

Islam,

Datta,

Das

et al. 2024

Bangladesh J. Bot.

View full text Add to dashboard Cite

Thirty one indigenous pointed gourd genotypes were studied in Terai region of West Bengal, India to observe variation of fruit morphology and genetic divergence using Mahalanobis D2 statistics and principal component analysis. The field experiment was designed in RBD with three replications at Uttar Banga Krishi Viswavidyalaya, West Bengal, India during the year 2018-19and 2019-20. All the genotypes were arranged into eight divergent clusters in which cluster I included maximum number followed by cluster II. The highest contribution towards genetic diversity was shown for node at the first female flower (37.85%) followed bychlorophyll a content of leaf (16.77%) and seeds per fruit (12.04%). Principal component-1 had maximum variability (43.83%) with positive loading for the characters like node at the first female flower (0.298), appearance of first female flower (0.265), days to fruit maturity (0.194) and internodal length (0.137). Based on the inter and intra cluster distance cross combinations in between lines PCP-17 and PCP-19, PCP-17 and PCP-9, PCP-17 and PCP-28, PCP-19 and PCP-11, PCP-14 and PCP-9 and PCP-23 and PCP-10 may be utilized in future improvement programme of pointed gourd. Bangladesh J. Bot. 53(1): 193-201, 2024 (March)

show abstract

Determination of genetic divergence in pointed gourd by principal component and non-hierarchical euclidean cluster analysis

Cited by 3 publications

References 12 publications

Environmental impact and genetic expressions of new drought tolerant maize genotypes in derived savannah agro-ecology

Environmental impact and genetic expressions of new drought tolerant maize genotypes in derived savannah agro-ecology

Unraveling the Relationship between Fruit Yield and Yield Related Components in Snake Gourd Genotypes using Multivariate Analysis

Variation of fruit morphology and genetic divergence of indigenous pointed gourd

Contact Info

Product

Resources

About