Evaluation of Some Characteristics of Collected Pomegranate Germplasm from Kerman Province in Iran

Document Type : Research Paper

Authors

1 Assistant Professor, Seed and Plant Improvement Institute, Agricultural Research, Education and Extension Organization, Karaj, Iran.

2 Assistant Professor, Agricultural and Natural Resources Research and Education Center of Yazd province, Agricultural Research, Education and Extension Organization, Yazd, Iran.

Abstract

To study genetic diversity in pomegranate germplasm collected from Kerman province, 94 accessions from the pomegranate collection of the National Plant Genetic Bank of Iran in Yazd were evaluated. For this purpose, 21 qualitative attributes were evaluated using the international descriptor for pomegranate. Analysis of Shannon index showed that shape of fruit base, seed color and vigour of tree had the highest, and color of one-year-old shoot, growth habit and bearing habit had the lowest diversity. Variation of Shannon index in each type of sweet, sweet-sour and sour genotypes followed similar pattern. Dendorgram of the cluster analysis divided sweet, sweet-sour and sour genotypes into five, seven, and eight groups, respectively. The results of boxplot study based on genotype origins indicated higher variation in the genetic distances of Ravar, Baft and Rafsanjan areas with other regions. The origins of the genotypes were divided into five groups using dendrogram. Ravar, Rafsanjan and Baft formed one group. Jiroft and Shahdad also belonged to a common group, and Sharababak and Bam, in a separate group. Sirjan and Chatroud regions stood individually in dendrogram. Results of cluster analysis by K-means method, using the principal components, showed that based on the Bayesian information criterion (BIC), the maximum genetic differentiation obtained at K = 10. The characteristics of each of the ten groups were studied. The results of this research in the field of genetic differentiation and germplasm grouping will be useful in future studies to identify genotypes and to select accssions with high levels of differentiation.

Keywords

References

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Seed and Plant Journal
Volume 35, Issue 1
May 2019
Pages 47-72

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