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T1 locus in cotton is the candidate gene affecting lint percentage, fiber quality and spiny bollworm (Earias spp.) resistance

Author:
Wan, Qun, Zhang, Zhengsheng, Hu, Meichun, Chen, Li, Liu, Dajun, Chen, Xiao, Wang, Wei, Zheng, Jing
Source:
Euphytica 2007 v.158 no.1-2 pp. 241-247
ISSN:
0014-2336
Subject:
Gossypium hirsutum, cotton, loci, crop yield, crop quality, fiber quality, chromosome mapping, linkage (genetics), inbred lines, plant morphology, quantitative trait loci, microsatellite repeats, genetic markers, Earias, plant pests, insect pests, pest resistance, phenotype
Abstract:
A genetic linkage map of chromosome 6 was constructed by using 270 recombinant inbred lines originated from an upland cotton cross (Yumian 1 × T586) F₂ population. The genetic map included one morphological (T₁) and 18 SSR loci, covering 96.2 cM with an average distance of 5.34 cM between two markers. Based on composite interval mapping (CIM), QTL(s) affecting lint percentage, fiber length, fiber length uniformity, fiber strength and spiny bollworm resistance (Earias spp.) were identified in the t₁ locus region on chromosome 6. The allele(s) originating from T586 of QTLs controlling lint percentage increased the trait phenotypic value while the alleles originating from Yumian 1 of QTLs affecting fiber length, fiber length uniformity, fiber strength and spiny bollworm resistance increased the trait phenotypic value.
Agid:
712813