当前位置: X-MOL 学术Plant Genome › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Stability Analysis of Kernel Quality Traits in Exotic-Derived Doubled Haploid Maize Lines.
The Plant Genome ( IF 4.219 ) Pub Date : 2019-03-01 , DOI: 10.3835/plantgenome2017.12.0114
Adam Vanous 1 , Candice Gardner 2 , Michael Blanco 2 , Adam Martin‐Schwarze 3 , Jinyu Wang 1 , Xianran Li 1 , Alexander E. Lipka 4 , Sherry Flint‐Garcia 5 , Martin Bohn 6 , Jode Edwards 2 , Thomas Lübberstedt 1
Affiliation  

Variation in kernel composition across maize (Zea mays L.) germplasm is affected by a combination of the plant's genotype, the environment in which it is grown, and the interaction between these two elements. Adapting exotic germplasm to the US Corn Belt is highly dependent on the plant's genotype, the environment where it is grown, and the interaction between these components. Phenotypic plasticity is ill‐defined when specific exotic germplasm is moved over large latitudinal distances and for the adapted variants being created. Reduced plasticity (or stability) is desired for the adapted variants, as it allows for a more rapid implementation into breeding programs throughout the Corn Belt. Here, doubled haploid lines derived from exotic maize and adapted through backcrossing exotic germplasm to elite adapted lines were used in conjunction with genome‐wide association studies to explore stability in four kernel composition traits. Genotypes demonstrated a response to environments that paralleled the mean response of all genotypes used across all traits, with protein content and kernel density exhibiting the highest levels of Type II stability. Genes such as opaque10, empty pericarp 16, and floury 1 were identified as potential candidates within quantitative trait locus regions. The findings within this study aid in validating previously identified genomic regions and identified novel genomic regions affecting kernel quality traits.

中文翻译:

外源衍生双倍单倍体玉米品系籽粒品质性状的稳定性分析。

变化在整个玉米内核组成(玉米L.)种质受植物基因型,其生长环境以及这两个要素之间相互作用的综合影响。使外来种质适应美国玉米带高度依赖于植物的基因型,其生长环境以及这些成分之间的相互作用。当特定的外来种质在较大的纬度距离上移动并产生适应的变体时,表型可塑性是不确定的。对于适应的变体,希望降低可塑性(或稳定性),因为这样可以更快地在整个玉米带的育种程序中实施。这里,将来自外来玉米的双倍单倍体系与通过将外来种质回交至适应优良的品系进行了结合,并与全基因组关联研究结合使用,探索了四个籽粒组成性状的稳定性。基因型表现出对环境的响应,该环境与所有性状所使用的所有基因型的平均响应相平行,蛋白质含量和籽粒密度显示出最高水平的II型稳定性。基因例如不透明10空果皮16面粉1被确定为定量性状基因座区域内的潜在候选对象。这项研究中的发现有助于验证先前确定的基因组区域和确定影响籽粒品质性状的新颖基因组区域。
更新日期:2019-03-01
down
wechat
bug