GENETIC DIVERSITY OF SWEET POTATO REVEALED BY DESCRIPTORS MULTICATEGORICAL BINARIES | ||||
| Journal of Agricultural Chemistry and Biotechnology | ||||
| Article 4, Volume 5, Issue 2, February 2014, Page 87-100 PDF (668.99 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jacb.2014.49872 | ||||
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| Author | ||||
| A. Y.A. M. Elsayed | ||||
| Breeding Res. Dept. Of Vegetable Crops, Hort. Res. Inst., Egypt. Postdoctoral at UFVJM Uni., Brazil between 2011 - 2013. | ||||
| Abstract | ||||
| This work aimed to study the genetic diversity of a collection of sweet potato that was collected from different regions of Brasil. Furthermore, to identify duplicate clones, as well as, identify useful sources of germplasm as a pre - breeding process. The work was conducted in the Department of Horticulture, Federal University of Jequitinhonha and Mucuri (UFVJM), Diamantina-MG during 2012 and 2013. Randomized complete block design was the experimental design used in this study comprised of 77 clones and 4 replications. Twenty four morphological descriptors multi-categorical binaries were applied in the characterization. The cluster analysis of Tocher and Hierarchical was used in the clones grouping. By the dissimilarity matrix between multi-categorical variables, the clones were divided into nine groups demonstrating great variability. The cluster methods Tocher and Hierarchical agreed with the first group formed, where remained the assembled clones in both methods with an increment of five clones in Hierarchical method. The clones varied in skin and flesh colors like white, cream, orange, pink, purple-red and dark purple. It was not possible to observe duplicate clones by the analysis of genetic similarity. The clones UFVJM-17, UFVJM-27, UFVJM-31 and UFVJM-42 were more similar with minimum similarity of 0.8. A high degree of variability was detected in the total tuber yield, between 47.13 to 4.26 tonne/hectare. It can be concluded that the existence of genetic variability among the clones conserved at Germplasm Bank of UFVJM can be used as a gene sources for developmental of high - quality value in sweet potato clones. | ||||
| Keywords | ||||
| Characterization; germplasm; Genetic variability; Ipomoea batatas | ||||
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