The Negative Correlation between Fiber Color and Quality Traits Revealed by QTL Analysis.
The Negative Correlation between Fiber Color and Quality Traits Revealed by QTL Analysis.
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DOI：
10.1371/journal.pone.0129490
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Du X
中科院分区：
文献类型：
--
作者：
Feng H;Guo L;Wang G;Sun J;Pan Z;He S;Zhu H;Sun J;Du X
自然存在的彩色棉由于存在产量低、纤维品质差、颜色单一等遗传因素，其品质远不完善。这些因素对彩棉育种和创新提出了挑战。为了寻找新的纤维颜色数量性状位点（QTL），了解色棉纤维颜色与品质的相关性，利用棕纤维棉宗128和白纤维棉2个品系的杂交获得了1个RIL和2个F2群体，并在4种环境下进行了分析。检测到两个稳定的主要qtl (qFC-7-1、qFC-7-1)，占多代和多环境表型变异的16.01% ~ 59.85%。同时，在5、14、21和24号染色体上也发现了一些较小的qtl，这些qtl仅在F2群体中存在低表型变异（<5%），而在RILs群体中没有。特别是，在7号染色体（a基因组）的侧标记NAU1043和NAU3654之间，在多种环境下发现了纤维颜色和质量的多效应位点。其中，qFC-7-1、qFC-7-1对后代的纤维颜色有积极作用和改善作用。与纤维品质相关的qtl （qFL-7-1、qFU-7-1、qFF-7-1、qFE-7-1和qFS-7-1）对表型变异的贡献率为2.19% ~ 8.78%。该纤维颜色与品质的多效位点可能揭示了上述两类性状之间的负相关关系，为棉花的遗传改良铺平了道路。
Naturally existing colored cotton was far from perfection due to having genetic factors for lower yield, poor fiber quality and monotonous color. These factors posed a challenge to colored cotton breeding and innovation. To identify novel quantitative trait loci (QTL) for fiber color along with understanding of correlation between fiber color and quality in colored cotton, a RIL and two F2 populations were generated from crosses among Zong128 (Brown fiber cotton) and two white fiber cotton lines which were then analyzed in four environments. Two stable and major QTLs (qLC-7-1, qFC-7-1) for fiber lint and fuzz color were detected accounting for 16.01%-59.85% of the phenotypic variation across multiple generations and environments. Meanwhile, some minor QTLs were also identified on chromosomes 5, 14, 21 and 24 providing low phenotypic variation (<5%) from only F2 populations, not from the RILs population. Especially, a multiple-effect locus for fiber color and quality has been detected between flanking markers NAU1043 and NAU3654 on chromosome 7 (A genome) over multiple environments. Of which, qLC-7-1, qFC-7-1 were responsible for positive effects and improved fiber color in offsprings. Meanwhile, the QTLs (qFL-7-1, qFU-7-1, qFF-7-1, qFE-7-1, and qFS-7-1) for fiber quality had negative effects and explained 2.19%-8.78% of the phenotypic variation. This multiple-effect locus for fiber color and quality may reveal the negative correlation between the two types of above traits, so paving the way towards cotton genetic improvement.
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DOI：
10.3724/sp.j.1006.2008.01199
发表时间：
2008-01-01
期刊：
Acta Agronomica Sinica
影响因子：
--
作者：
Chen Li, Chen Li;Zhang ZhengSheng, Zhang ZhengSheng;Ma, J.
通讯作者：
Ma, J.
影响因子：
2.1
作者：
Paterson, A. H.;Brubaker, C. L.;Wendel, J. F.
通讯作者：
Wendel, J. F.
影响因子：
5.4
作者：
Draye, X;Chee, P;Paterson, AH
通讯作者：
Paterson, AH
影响因子：
1.9
作者：
Ahuja, S. L.;Dhayal, L. S.;Monga, D.
通讯作者：
Monga, D.
影响因子：
5.4
作者：
Han, ZG;Wang, CB;Zhang, TZ
通讯作者：
Zhang, TZ