Investigation of genetic variation and Cluster analysis in different Haloxylon genotypes

Document Type : Research Paper

Authors

1 Qom Agricultural and Natural Resources Research Center, Qom, Iran

2 Research Institute of Forests and Rangelands, P.O.Box: 13185-116, Tehran, Iran.

Abstract

Genetic potential and variation of 30 Haloxylon genotypes from four arid zone of Iran have been evaluated in 1998-2003. Experiment were done in Hossein-Abad station in Qom area. Considering Randomized Complete Block Design with three replication. Meausered traits of each genotype in five yeares were as following: plant height, stem diameter, diameter of longer and smaller canopy cover. Variance analysis and compound analysis were done. Correlation coefficient of plant height in 5 year with plant height and diameter of stem in the years ago was positive and significant (p³0.05). Factor component analysis determined.
Twenty–one factors that first five of them were eginvalue more than one so entering in factor analysis. Factors: “diameter of canopy cover” and “pest damages” recognized by factor analysis. Cluster analysis divided genotypes to five groups: first group was almost from Yazd and second group was one genotype from Yazd and two genotype of Sistan. In this group, the trials plant height, stem diameter and canopy diameter were higher of other groups. 3th and 4th group include several genotypes from different zones. 5th group almost from Semnan.

Keywords

References

جیحونی، ا.، 1354. بررسی چگونگی کشت و توسعه انواع تاغ در استان کرمان، پایان‌نامه کارشناسی ارشد جنگل، دانشگاه تهران.
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4-Shamsotdinov. Z., 1989. Ecological and evolutionary basis for breeding arid–land. Selektsiyai Semenovodstov, 5: 22-26.
5- Zhang, y. and Hou, W.H., 1988. Ecological and physiological Characteristics of Haloxylon. Chinese Journal. of Arid land Research.
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