Molecular dissection of quantitative variation in fiber elongation between <i>Gossypium hirsutum</i> and <i>Gossypium barbadense</i> in reciprocal near-isogenic lines.

ABSTRACT: In reciprocal interspecific near-isogenic lines developed by crossing elite cultivars Acala Maxxa (Gossypium hirsutum) and Pima S6 (G. barbadense) representing the two major domesticated species of cotton, we identified genomic locations underpinning an important fiber quality trait - fiber elongation (ELO). Phenotypic evaluation of these lines in three environments revealed a total of 36 QTLs, including 14 (38.89%) on the D subgenome, from a progenitor that does not produce spinnable fiber. Nearly half (16, 44.4%) of the 36 QTLs identified in the study explained less than 6% of phenotypic variation, and two (EL07.1 and EL25.1) were new, justifying the use of near-isogenic lines for analysis. Significantly larger additive effects of these QTLs in comparison to those reported

SUBMITTER: Adhikari J 

PROVIDER: S-EPMC12479486 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature