Premium
Cytomorphological study of Scutellaria platystegia (Lamiaceae) in Iran
Author(s) -
Ranjbar Massoud,
Mahmoudi Chonour
Publication year - 2014
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.201300010
Subject(s) - scutellaria , meiosis , anaphase , bivalent (engine) , biology , lamiaceae , ploidy , chiasma , population , genetics , botany , metaphase , chromosome , centromere , chemistry , medicine , alternative medicine , organic chemistry , environmental health , pathology , traditional chinese medicine , metal , gene
Chromosome number, meiotic behaviour and morphological characters related to habit were studied in 10 populations of Scutellaria platystegia Juz. from S. sect. Lupulinaria native to Iran. All populations are diploid and has the chromosome number 2 n = 2 x = 22, which is consistent with the proposed base number of x = 11. This taxon displayed regular bivalent pairing and chromosome segregation at meiosis. However, some meiotic abnormalities observed included various degrees of fragmented chromosomes, laggards and bridges in anaphase I to telophase II, precocious division of centromeres in metaphase I or II, asynchronous nucleus and cytomixis. We evaluated and determined the population limits within S. platystegia , employing multivariant statistics. We found a striking association between meiotic behaviour and gross morphology. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)