Abstract
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 language | English |
---|---|
Number of pages | 15 |
Journal | Gene Conserve |
Volume | 13 |
Issue number | 52 |
Publication status | Published - Sept 2014 |
Externally published | Yes |
Keywords
- cytogenetic
- Gossypium
- hybridization