Morphological variations and relationship among onion germplasm for quantitative and qualitative traits at trans-Himalaya Ladakh, India

Arya, Jagdish Singh; Singh, Narendra; Arya, Priyanka; Kant, Anil

doi:10.21475/ajcs.17.11.03.pne369

Cited by 22 publications

(24 citation statements)

References 9 publications

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“…The results of presented studies are also in accordance with the studies of Sudha et al (2019). Arya et al (2017) also studied different morphological and bulb traits for diversity analysis through principal component analysis and found that maximum traits were highly positive contributor towards total variation studied in onion. Present results for genetic correlation of single bulb weight or bulb yield per plant to bulb diameter and bulb yield per plot are supported by the results of Raghuwanshi et al (2016); Saini and Maurya (2014) and Awale et al (2011).…”

Section: Discussionsupporting

confidence: 87%

“…It has also been regarded as an efficient tool of varietal classification (Tsukazaki et al, 2010). Arya et al (2017) studied diverse onion genotypes for morphological and bulb traits and found great diversity. They indicated that genotypes, from different clusters which are important for bulb and its yield contributing traits, can be used for future breeding program.…”

Section: Discussionmentioning

confidence: 99%

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Assessment of Genetic Divergence and Its Utilization in Hybrid Development in Cultivated Onion (Allium Cepa L.)

2020

THE JAPS

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Exploration of genetic variation may help to select diverse parents for open pollinated variety and hybrid development program in onion (Allium cepa L.). Thirty-five onion genotypes were analyzed by two-way cluster analysis and principal component analysis (PCA) on the basis of phenotypic traits. These genotypes were grouped in five different clusters. PCA provided information for variation in genotypes on the basis of studied traits. Ten genotypes were selected from five diverse clusters and hybridized in a line × tester mating fashion. Twenty-four F1 combinations were developed and raised along-with parents for assessment of hybrid vigor, commercial heterosis and genetic correlation. Data was analyzed for morphological and biochemical traits. Maximum commercial heterosis (heterosis computed over commercial standard/check variety) for bulb yield per plot was observed in combination MKS-SGB × MKS-GBP-01, MKS-57404 × Super Sarhad and MKS-SGB × Mustang (55.77%, 36.70% and 32.90%), respectively. Maximum better parent heterosis for bulb yield per plot was in combinations MKS-SGB × MKS-GBP-01 (31.01%), followed by MKS-TEG × Mustang, MKS-57404 × Super Sarhad and MKS-SGB × Mustang (13.76%, 12.49% and 11.79%), respectively. Genetic correlation coefficient showed that bulb yield per plot showed highly significant and positive association with single bulb weight, bulb diameter, significant positive association with leaf density (number of leaves per plant), leaf width (diameter) and significant but negative association with total soluble solids. Yield per plot showed a negative association with days to maturity. Present study revealed that cluster analysis and PCA can play an important role in effective parent selection without compromising genetic diversity for development of potential hybrids for commercial exploitation.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Assessment of Genetic Divergence and Its Utilization in Hybrid Development in Cultivated Onion (Allium Cepa L.)

2020

THE JAPS

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“…Genotype CITH-O-11, had P: E ratio 1, whereas CITH-O-4, CITH-O-32 and CITH-O-13 have < 1 P: Eratio and remaining genotypes were having >1 P: E ratio. Arya et al (2017). The observed variability found among the onion genotypes might be related to genetic makeup of genotype as per Kandil et al (2010).…”

Section: Resultsmentioning

confidence: 92%

“…Arya et al (2017) and Singh et al Bi-plot for 1 st and 2 nd PC for genotypes of onion in relation horticultural traits…”

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confidence: 99%

Assessment of Genetic Divergence in Long Day Onion (Allium cepa L.) through Principal Component and Single Linkage Cluster Analysis

R¹,

Ahamed²,

Srivastava³

et al. 2020

J Hortic Sci

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To assess the nature and magnitude of genetic diversity in long day onion germplasm by using the principal component analysis and single linkage cluster analysis an experiment was carried out with 34 onion genotypes. High coefficient of variation with wide range in traits indicated an appreciable variability in germplasm. Genotypes were classified into seven principal components having Eigen value > 1, cumulatively accounted for 83.87% of total variability. Principal Component - I contributed for 24.73% of total variation for followed by principal component-II (15.27%). PC-I had high positive loading for bulb weight (0.401), marketable yield (0.338), total bulb yield (0.401) and PC-II had high positive loading for plant height (0.412), PC-III for high T.S.S. (0.276) PC -IV for A grade bulbs (0.436), PC-V for polar diameter of bulbs (0.514), PC-IV negatively loaded with purple blotch (-0.461) and PC-VII for narrow neck thickness (-0 .515). Plotting PC-I aganist PC-II differenciated CITH-O-13, CITH-O-4, CITH-O-22, CITH-O-19, CITH-O-9, CITH-O-6 and CITH-O2 as most divergent genotype.On the basis of single linkage cluster means cluster-I was most importent for average bulb weight, minimum bolters, high marketble bulb percentage high marketable and total bulb yield whereas cluster -II was important for maximum nuber of leaves/plant and minimum neck thicknes. Highest inter-cluster distance was observed between cluter II and Cluster-I(873.5% ).Most divergent genotypes with high inter cluter distance could be the most appropriate parents for crop impovement in onion.

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“…The essential nature of assessment on morphological variation and taxonomic relationships using qualitative and quantitative characters for crop improvement through selection and breeding program has been noted by Arya et al (2017). The application of cluster analysis in the study of morphological diversity in relation to selection strategy and breeding program has been pointed out by Mallor et al (2011).…”

Section: Discussionmentioning

confidence: 99%

Short Communication: Morphology and taxonomic relationships of shallot (Allium cepa L. group aggregatum) cultivars from Indonesia

Fitriana

Susandarini

2019

Biodiversitas

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Abstract. Fitriana N, Susandarini R. 2019. Short Communication: Morphology and taxonomic relationships of shallot (Allium cepa L. group aggregatum) cultivars from Indonesia. Biodiversitas 20: 2809-2814. Shallot is an important vegetable crop commodity in Indonesia, and its ranks third in terms of cultivation area after chili (Capsicum annuum L.) and cabbage (Brassica oleracea L.). There are a number of superior cultivars of this species that have been studied in terms of their morpho-agronomic traits, but their morphological variability and its implication to taxonomic relationships have not been studied in depth. This study aimed at documenting morphological variability and taxonomic relationships of 12 superior shallot cultivars using numerical taxonomic approaches. Sixteen morphological characters from leaves and bulbs were used in cluster analysis and principal component analysis. The results revealed that twelve shallot cultivars from Indonesia showed significant variability in leaf and bulb morphology, particularly in quantitative characteristics as indicated from ANOVA. The grouping of cultivars and their taxonomic relationships generated from cluster analysis and principal component analysis revealed the role of bulb morphology as determining characteristics in the grouping of cultivars. This study suggested the importance of bulb morphology in the characterization of shallot cultivars.

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Morphological variations and relationship among onion germplasm for quantitative and qualitative traits at trans-Himalaya Ladakh, India

Cited by 22 publications

References 9 publications

Assessment of Genetic Divergence and Its Utilization in Hybrid Development in Cultivated Onion (Allium Cepa L.)

Assessment of Genetic Divergence and Its Utilization in Hybrid Development in Cultivated Onion (Allium Cepa L.)

Assessment of Genetic Divergence in Long Day Onion (Allium cepa L.) through Principal Component and Single Linkage Cluster Analysis

Short Communication: Morphology and taxonomic relationships of shallot (Allium cepa L. group aggregatum) cultivars from Indonesia

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