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STUDY ON CHROMOSOMAL STRUCTURAL HETEROZYGOSITY IN PAEONIA EMODI, AN ENDANGERED SPECIES

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dc.contributor.author WANG, SHI-QUAN
dc.date.accessioned 2023-01-10T05:27:37Z
dc.date.available 2023-01-10T05:27:37Z
dc.date.issued 2013-06-01
dc.identifier.citation Wang, S. Q. (2013). Study on chromosomal structural heterozygosity in Paeonia emodi, an endangered species. Pak. J. Bot, 45(3), 713-718. en_US
dc.identifier.issn 2070-3368
dc.identifier.uri http://142.54.178.187:9060/xmlui/handle/123456789/15859
dc.description.abstract Chromosomal meiotic behavior in pollen mother cells (PMCs) of Paeonia emodi, an endangered species, was investigated in natural population represented by nine individuals. The results showed that: (1) Mean chromosome configuration was 2n = 10 = 0.20 I + 4.90 II at metaphase. Most of the chromosomes were ring bivalents, but some were rod bivalents or univalents. The existence of rod bivalent and univalent indicated the differentiation between the homologous chromosomes, most probably due to chromosomal structural heterozygosity. (2) All individuals studied were chromosomal structural heterozygotes, i.e., inversion, as indicated by bridge and/or fragment. (3) There were some variations among individuals in size of fragments, which indicated that different inversions existed in this species, i.e., paracentric inversion polymorphisms. Chromosomal structural heterozygosity is a common phenomenon in Paeonia. Further research is necessary to probe into the reasons that structural heterozygosity exists widely, and whether there is relationship between heterozygosity and ecological adaptation in this species. en_US
dc.language.iso en en_US
dc.publisher Karachi: Pakistan Botanical Society en_US
dc.title STUDY ON CHROMOSOMAL STRUCTURAL HETEROZYGOSITY IN PAEONIA EMODI, AN ENDANGERED SPECIES en_US
dc.type Article en_US


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