Heritable basis for some genotype-environment stability statistics: Inferences from QTL analysis of heading date in two-rowed barley
Heritable basis for some genotype-environment stability statistics: Inferences from QTL analysis of heading date in two-rowed barley
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DOI：
10.1016/j.fcr.2005.07.006
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发表时间：
2006-04-30
影响因子：
5.8
通讯作者：
Moody, DB
中科院分区：
文献类型：
--
作者：
Emebiri, LC;Moody, DB
通过数量性状位点（qtl）分析，探讨了植物育种中一些稳定性统计的遗传基础。定位群体包括180个双倍单倍体系，来自澳大利亚（VB9524）和北美（ND1 1231-12）两栏大麦系的杂交。利用211点遗传连锁图谱，我们在群体中鉴定出6个分离抽穗日期的qtl。这些映射到主要早期基因（Ppd-H1和Ppd-H2）的大致位置，以及狭义上的几个早期基因（早期本身）。通过将QTL位置与计算出的稳定性统计数据进行比对，利用QTL位置的共定位来推断遗传基础。所考虑的稳定性统计是Wricke的[Wricke， G., 1962]。用优步方法研究长石的地质特征。[j]张晓东，张晓东，张晓东，等。生态心理学的研究进展[j] .科学通报，2009,(2):1 - 8。比较品种的稳定性参数。林志强，林志强，林志强，1988.回归系数（SLOPE）与回归偏差（MSDEV）的关系[j] .作物科学，6,36-40。品种x定位数据对品种性能的优势度量。可以。[j]品种优势测度（P-i）和前两个主成分轴得分（IPCA1和IPCA2）。基于全基因组LOD阈值为3.0，我们发现MSDEV的遗传控制证据很少。然而，Wi被认为是受遗传控制的，因为它与Ppd-H1基因所在的2H染色体上的一个位点有显著的连锁（峰值LOD = 4.85）。对于SLOPE和IPCA1，与三个非连锁位点的连锁表明了遗传控制的有力证据。其中2个发生在OD染色体2HS和5HL区域，接近Ppd-H1和ep5hl的大致位置，抽穗日期QTL显示出显著的QTL与E互作（P < 0.001）。对于P-i，全基因组的LOD谱与抽穗日期qtl相匹配，在鉴定出qtl的所有区域都有最高的LOD分数。稳定性参数qtl与抽穗日期qtl的共定位模式表明，在该群体中，G x E相互作用可能在很大程度上受等位基因敏感性控制。(c) 2005 Elsevier B.V.版权所有
The genetic basis for some stability statistics used in plant breeding was investigated in this study by quantitative trait loci (QTLs) analysis. The mapping population comprised 180 doubled haploid lines from a cross between Australian (VB9524) and North American (ND1 1231-12) two-rowed barley lines. Using a 211-point genetic linkage map, we identified six QTLs segregating for heading date in the population. These mapped to the approximate position of the major earliness genes (Ppd-H1 and Ppd-H2), and several genes for earliness in a narrow sense (earliness per se). By aligning the QTL positions with those for calculated stability statistics, we used the co-location of QTL positions to infer genetic basis. The stability statistics considered were Wricke's [Wricke, G., 1962. Uber eine Methode zur Erfassung der oekologischen Streubreite in Feldversuchen. Zeitschr f Pflanzenz 47, 92-96] Ecovalence (W-i), Eberhart and Russell's [Eberhart, S.A., Russell, W.A., 1966. Stability parameters for comparing varieties. Crop Sci. 6, 36-40] regression coefficient (SLOPE) and deviation from regression (MSDEV), Lin and Binns' [Lin, C.S., Binns, M.R., 1988. A superiority measure of cultivar performance for cultivar x location data. Can. J. Plant Sci. 68, 193-198] cultivar superiority measure (P-i) and the first two principal component axis scores (IPCA1 and IPCA2) from the additive main effect and multiplicative interaction (AMMI) model.Based on a genome-wide LOD threshold of 3.0, we found little evidence for genetic control of MSDEV. However, Wi was considered to be under genetic control, due to a significant linkage (peak LOD = 4.85) to a locus on chromosome 2H where the Ppd-H1 gene is located. For SLOPE and IPCA1, strong evidence of genetic control was indicated by linkage to three unlinked loci. Two of these occurred at regions OD chromosomes 2HS and 5HL, close to the approximate locations of Ppd-H1 and eps5HL, and where heading date QTLs showed significant (P < 0.001) QTL x E interactions. For P-i, the genome-wide LOD profile matched that for heading date QTLs, with peak LOD scores at all regions where the QTLs were identified. The pattern of co-localisation of QTLs for stability parameters with those for heading date suggests that, in this population, G x E interactions might be largely controlled by allelic sensitivity. (c) 2005 Elsevier B.V. All rights reserved.