Title of article
CHROMOSOME PAIRING AND HETEROZYGOTE TRANSLOCATION IN OLTAN COTTON CULTIVAR AND ITS CROSSING PROGENIES
Author/Authors
SHEIDAI، M نويسنده 1Biology Department, Shahid Beheshti University, Evin, Tehran, I. R. of Iran , , GOLESTANIPOOR، A نويسنده 2Biology Department, Sistan & Baloochestan University, Zabole, I. R. of Iran , , JORJANI، E نويسنده 2Biology Department, Sistan & Baloochestan University, Zabole, I. R. of Iran ,
Issue Information
دوفصلنامه با شماره پیاپی 0 سال 2006
Pages
7
From page
103
To page
109
Abstract
A cytogenetic study was performed on 11 tetraploid cotton cultivars (Gossypium hirsutum L.)
including the Oltan cultivar and its crossing progenies. The chromosome pairing and chiasma frequency, as
well as meiotic abnormalities were compared among the genotypes studied. Heterozygote translocations with
alternate orientation were observed between some of the chromosomes of the A genome and those of D
genome in some of the cultivars, which may bring about new genetic rearrangement to be used in breeding
programs. Meiotic abnormalities including formation of laggard chromosome, stickiness, as well as
disorganized chromosomes occurred in some of the cultivars, which may cause pollen sterility. Bchromosomes
were observed in some of the cultivars. The cultivars studied differed significantly in their
cytogenetic characteristics, partly indicating their genomic differences, which may be used in cotton breeding.
Journal title
Iranian Journal of Science and Technology Transaction A: Science
Serial Year
2006
Journal title
Iranian Journal of Science and Technology Transaction A: Science
Record number
1968175
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