Paper Information

Journal:   JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES   OCTOBER-NOVEMBER 2007 , Volume 14 , Number 4; Page(s) 171 To 183.
 
Paper: 

ANATOMICAL AND MORPHOLOGICAL VARIATION OF BROMUS TOMENTELLUS POPULATIONS IN IRAN

 
 
Author(s):  KARIMI Z.*, ARIAVAND A.
 
* DEPT. OF BIOLOGY, GORGAN UNIVERSITY OF AGRICULTURAL SCIENCES AND NATURAL RESOURSES, GORGAN, IRAN
 
Abstract: 

Bromus tomentellus Boiss. from Poaceae is an important species which is common various habitats and geographically distributed widely in Iran. Seed collected from different area of the country, were grown under greenhouse conditions and a through comparative study on the morphology, anatomy of the raised plants  conducted during all stages of vegetative and reproductive growth. Morphological study indicated significant intra-species variation in number, length and width of the leaf, number, length and width of spikelet, spikelet/ inflorescens, floret number and length and width in spikelet, length and width of inflorescens, length of culm and inflorescens/culm. Anatomical studies showed significant differences within species when comparing: lamina overall total shape, number of lamina vascular system, keel form, number of rows and types of stomata, density of trichomes and also presence of silica bodies in epidermal layer. Cluster analysis was performed based on the results obtained using UPGMA method and the relevant dendrogram was constructed. The dendrogram showed two main clusters and each cluster contained samples belong to the corresponding ecological areas. It was concluded that it is probably possible to identify different ecotypes of the species based on the geographical distribution.

 
Keyword(s): BROMUS TOMENTELLUS, MORPHOLOGICAL AND ANATOMICAL STUDY, UPGMA
 
References: 
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