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Paper Information

Journal:   THE IRANIAN JOURNAL OF BOTANY   2009 , Volume 15 , Number 2 (30); Page(s) 213 To 226.
 
Paper: 

MORPHOLOGICAL AND PALYNOLOGICAL STUDIES IN SOME ACHILLEA L. SPECIES (ASTERACEAE) OF IRAN

 
 
Author(s):  AZANI NASIM, SHEIDAII MASOUD*, ATTAR FARIDEH
 
* SHAHID BEHESHTI UNIVERSITY, GC, FACULTY OF BIOLOGICAL SCIENCES, TEHRAN, IRAN
 
Abstract: 

Morphological and palynological studies were performed in 34 populations of 12 Achillea species belonging to three sections of Santolinoidea, Millefolium and Filipendulinae growing in Iran. Morphological studies were performed on 34 populations of 12 species. In total 33 morphological characters including 13 quantitative and 20 qualitative were scored. ANOVA test showed significant difference for most of quantitative characters among the species and populations studied. UPGMA clustering of the populations and species studied based on merely quantitative morphological characters and also based on both quantitative and qualitative characters separated populations of each species from the others indicating the use of these characters in species delimitation, however no resolved relationship could be obtained and the species from 3 sections stated in Flora Iranica are intermingled. The size of the pollen grains ranged from 22.4-30.0 mn, with similar P/E ratio, trizonocolporate, radially symmetrical, isopolar, spheroidal. The spines are pointed and are dome shaped broad based. The number of spine rows between colpi varies from 3 to 5 among the species. This feature can be determined easily in the polar view by light microscope. The exine thickness varies from 2.4 mn to 4.5 mn among the species and pollen sculpturing is echinate in all. Clustering and ordination of species based on palynological characters also showed mixing of species from 3 sections mentioned in Flora Iranica.

 
Keyword(s): ACHILLEA, MORPHOLOGY, PALYNOLOGY, CLUSTERING, ORDINATION
 
References: 
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