Chromosome pairing and genome size analysis in F1 and F2 offspring derived from crossing Gossypium barbadense and G. hirsutum

Zahra Noormohammadi, Momeneh Foroutan, Masoud Sheidai, Omran Alishah

Research output: Contribution to journalArticleResearch


Cultivated cotton species Gossypium hirsutum L. and Gossypium barbadense L. are considered as the highest yield producing cottons, which are cultivated in several regions of Iran. Due to long time selection and cultivation practice, we need to broaden the cotton gene pool by producing new hybrids. Interspecific hybrids ensued after crossing G. hirsutum and G.barbadense. In the present study, cytogenetic charactristics and genome size of parental cotton species (G. hirsutum L. and G. barbadense) and their F1 and F2 hybrid progenies were studied. All cotton genotypes showed 2n = 4x= 52 chromosome number. The genotypes differed significantly in cytogenetic charcaters like number of total intercalary, and terminal chiasmata, mean number of ring chromosomes and quadrivalents (P < 0.05). The genome size of the genotypes varied from 1.345 to 4.37 picograms. This 1 research revealed cytogenetic variability among the cotton offspring and if these are combined with agronomic characteristics, they can be used in cotton breeding.
Original languageEnglish
Number of pages15
JournalGene Conserve
Issue number52
Publication statusPublished - Sept 2014
Externally publishedYes


  • cytogenetic
  • Gossypium
  • hybridization

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