QTL analysis of popping fold and the consistency of QTLs under two environments in popcorn.

QTL analysis of popping fold and the consistency of QTLs under two environments in popcorn. Research Abstract Details 

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QTL analysis of popping fold and the consistency of QTLs under two environments in popcorn. Abstract Text:

Yu-Ling Li,Yong-Bin Dong,Su-Zhen Niu,

Popping fold (PF) is the most important quality trait in popcorn. In this study, a total of 259 F2:3 families, derived from the cross between a dent corn inbred Dan232 and a popcorn inbred N04, were evaluated for their popping folds in replicated experiments under two environments. Of 613 simple sequence repeat (SSR) primer pairs screened, 183 pairs were selected to construct a genetic linkage map with the genetic distance of 1,762.2 cM (centimorgan) and on average 9.63 cM every marker. Quantative trait loci (QTL) were identified, and their genetic effects were estimated using CIM (composite interval mapping) method. The interactions among QTLs detected were calculated using MIM (multiple interval mapping) method. In all, 22 QTLs were detected, and only 5 of them were common under two environments. Contribution to phenotypic variation of a single QTL varied from 3.07% to 12.84%, and total contributions of all QTLs under two environments were 66.46% and 51.90%, respectively. Three QTLs (qPF-6-1, qPF-8-1 and qPF-1-3) with more than 10% contributions were observed. The additive effects were larger than dominant effects for most QTLs. The amount of QTLs showing additive, partially dominant, dominant and over-dominant effects were 4, 5, 0, 2 in spring sowing and 2, 5, 2, 2 in summer sowing, respectively. There were only 2.60% pairs of QTLs or maker intervals expressing AA, DA or DD interactions.

QTL analysis of popping fold and the consistency of QTLs under two environments in popcorn. Publishing Authors By Initials

YL Li,YB Dong,SZ Niu,

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QTL analysis of popping fold and the consistency of QTLs under two environments in popcorn. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Yi chuan xue bao = Acta genetica Sinica

VOLUME: 33

Page Numbers: 724-32

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ISSN: 0379-4172

DAY: 30

MONTH: Aug

YEAR: 2006

QTL analysis of popping fold and the consistency of QTLs under two environments in popcorn. Information

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LANGUAGE: eng

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Grant and Affiliation Information for QTL analysis of popping fold and the consistency of QTLs under two environments in popcorn.

AFFILIATION: College of Agronomy, Henan Agricultural University, Zhengzhou, China. yuling_li@126.com

Country: China

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MEDLINETA: Yi Chuan Xue Bao

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