Study Of Kryotype In Three Astragalus Species
2007
Javadi, H., Scientific Member of Agricultural and Natural Resources Research Center of East Azarbaijan Province., | Razban. A., H.,Msc. Agricultural and Natural Resources Research Center of East Azarbaijan Province., | Hessam-zadehe. S.M., Scientific Member of Research Institute of Forests and Rangelands.
Astragalus from family of fabaceae grows extensively in ranglands and mountainous region Iran. Cytogenetic studies are very important for plant improvement. In order to morphology of chromosomes in three species of Astargalus (A. aznabjurtieus, A. cancellatus and A. elegans) microscopic sample was prepared and studied, using their root meristem after fixation, hydrolysis and staining stages. The results showed that all the species were 2n=4X=32. Measurment different traits of karyotype (L, S, L+S, L/S, س¨L+S), S%, TF%, DRL, VRC, A1, A2) showed that the longest chromosome and genom and the shortest chromosome and genom in A.elegans and A. cancellatus species, respectively, A. elegans has more symmetric and is new species, with least A1 and most percent TF and S and formula karyotype related to two other species.
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