Influence of dent corn genetic backgrounds on QTL detection for plant-height traits and their relationships in high-oil maize

被引：19

作者：

Wei, M. ^{[1
]}

Fu, J. ^{[1
]}

Li, X. ^{[1
]}

Wang, Y. ^{[1
]}

Li, Y. ^{[1
]}

机构：

[1] Henan Agr Univ, Coll Agr, Zhengzhou, Peoples R China

来源：

JOURNAL OF APPLIED GENETICS | 2009年 / 50卷 / 03期

关键词：

Zea mays; genetic background; multiple-trait joint QTL mapping; QTL inconsistency; SSR markers; KERNEL CHEMICAL-COMPOSITION; EAR HEIGHT; HYBRID PROGENY; GRAIN-YIELD; LOCI; POPULATIONS; TESTERS; WEIGHT; IDENTIFICATION; ACCUMULATION;

D O I：

10.1007/BF03195676

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

QTL mapping for plant-height traits has not been hitherto reported in high-oil maize. A high-oil maize inbred 'GY220' was crossed with two dent maize inbreds ('8984' and '8622') to generate two connected F-2:3 populations. Four plant-height traits were evaluated in 284 and 265 F-2:3 families. Single-trait QTL mapping and multiple-trait-joint QTL mapping was used to detect QTLs for the traits and the genetic relationship between plant height (PH) and two other plant-height traits. A total of 28 QTLs and 12 pairs of digenic interactions among detected QTLs for four traits were detected in the two F-2:3 families. Only one marker was shared between the two populations. Joint analysis of PH with ear height (EH) and PH with top height (TH) detected 32 additional QTLs. Our results showed that QTL detection for PH was dependent on the genetic background of dent corn inbreds. Multiple-trait-joint QTL analysis Could increase the number of detected QTLs.

引用

页码：225 / 234

页数：10

共 57 条

[1] High-resolution mapping and isolation of a yeast artificial chromosome contig containing fw2.2: A major fruit weight quantitative trait locus in tomato [J].