Morphological Diversity in Indigenous Cucumber Genotypes of Bangladesh

1
Md. Nazirul Islam
Md. Nazirul Islam Chief Scientific Officer
2
Iftekhar Ahmed
Iftekhar Ahmed
3
A.K. Azad
A.K. Azad
1 Plant Genetic Resource Centre, Bangladesh Agricultural eseach Institute
2 University of Chittagong

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A study was conducted to assess the genetic diversity of locally collected cucumber germplasm by using morphological markers at the Plant Genetic Resources Centre of the Bangladesh Agricultural Research Institute, Gazipur, Bangladesh during March to August 2017. Quantification of variability for each character was done by using Shannon Weaver Diversity Index (SWDI). Characterization data were further subjected to Principal Component Analysis (PCA). The collection exhibited medium to high variations for both the qualitative and quantitative characters as reflected by mean diversity indices 0.62 and 0.63 respectively. Two phonological characters viz. days to harvest and days to pistilate flower respectively showed the weakest indices 0.26 and 0.32. First four principal components accounted for 80% of the observed variations. Analysis of the factor loading of component characters showed that fruit characters to be the major attributes of variation. Cluster analysis performed on the germplasm gave 3 distinct clusters. Genotypes AMA-406and Ac-207 in cluster I found to be potential for breeding purpose.

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No external funding was declared for this work.

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The authors declare no conflict of interest.

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No ethics committee approval was required for this article type.

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Not applicable for this article.

Md. Nazirul Islam. 2019. \u201cMorphological Diversity in Indigenous Cucumber Genotypes of Bangladesh\u201d. Global Journal of Science Frontier Research - D: Agriculture & Veterinary GJSFR-D Volume 18 (GJSFR Volume 18 Issue D8): .

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GJSFR Volume 18 Issue D8
Pg. 11- 18
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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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GJSFR-D Classification: FOR Code: 300302
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v1.2

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January 25, 2019

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English

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A study was conducted to assess the genetic diversity of locally collected cucumber germplasm by using morphological markers at the Plant Genetic Resources Centre of the Bangladesh Agricultural Research Institute, Gazipur, Bangladesh during March to August 2017. Quantification of variability for each character was done by using Shannon Weaver Diversity Index (SWDI). Characterization data were further subjected to Principal Component Analysis (PCA). The collection exhibited medium to high variations for both the qualitative and quantitative characters as reflected by mean diversity indices 0.62 and 0.63 respectively. Two phonological characters viz. days to harvest and days to pistilate flower respectively showed the weakest indices 0.26 and 0.32. First four principal components accounted for 80% of the observed variations. Analysis of the factor loading of component characters showed that fruit characters to be the major attributes of variation. Cluster analysis performed on the germplasm gave 3 distinct clusters. Genotypes AMA-406and Ac-207 in cluster I found to be potential for breeding purpose.

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Morphological Diversity in Indigenous Cucumber Genotypes of Bangladesh

Md. Nazirul Islam
Md. Nazirul Islam Plant Genetic Resource Centre, Bangladesh Agricultural eseach Institute
Iftekhar Ahmed
Iftekhar Ahmed University of Chittagong
A.K. Azad
A.K. Azad
A.K. Azad
A.K. Azad

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