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首页> 外文会议>Second International Conference on Sustainable Agriculture for Food, Energy and Industry Vol.1 Sep 8-13, 2002 Beijing, China >Locating QTLs Controlling Drought Tolerance Criteria in Rye Using Disomic Addition Lines
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Locating QTLs Controlling Drought Tolerance Criteria in Rye Using Disomic Addition Lines

机译：使用二叉体加成线定位控制黑麦中耐旱性标准的QTL

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摘要

Drought stress is one of the most important threatening factors for the production of crop plants in the arid and semi-arid regions of the world. The related species of wheat are valuable genetic material for different traits including resistance/tolerance to biotic and abiotic stresses. To locate the genes controlling drought tolerance disomic addition lines of Imperial rye (donor) in the genetic background of Chinese Spring (recipient) were tested in a completely randomized design in controlled condition, and in a randomized complete block design in the field condition each with three replications. The materials were tested under two different water regimes (irrigated and rainfed) in the Agricultural Research Station of College of Agriculture, Razi University, Kermanshah, Iran. The potential yield (Yp), stress yield (Ys), Promptness Index in stress (PIS) and non-stress (PINS) condition, Germination Stress Index (GSJ), Stress Tolerance Index (STI), Coleoptile Length (COL), Primary Root Length (PRL), and Primary Root No. (PRN) were recorded. The results of analysis of variance exhibited highly significant differences among the lines for all the traits, except PRN indicating the presence of genetic variation and possible chromosomal localization of the genes controlling the traits investigated. Mean comparison of different traits revealed that most the genes controlling yield and drought tolerance related traits are located on chromosomes 7R, 3R, and 5R. Cluster analysis of addition lines for GSI also placed the lines carrying these chromosomes in a group with higher GSI. Correlation analysis indicated strong association between STI with GSI, COL, and PRL. Therefore these criteria may be screened for indirect selection of drought tolerance in the initial stages of the crop growth.
机译：干旱胁迫是世界干旱和半干旱地区农作物生产的最重要威胁因素之一。小麦的相关物种是具有不同性状（包括对生物和非生物胁迫的抗性/耐受性）的有价值的遗传物质。为了在控制条件下以完全随机设计，在野外条件下以随机完整块设计在每个条件下对控制春黑麦（供体）抗御黑麦（供体）的基因的定位基因进行完全随机设计测试。三个重复。在伊朗克尔曼沙什的拉齐大学农业学院农业研究站，在两种不同的水情条件下（灌溉和雨养）对材料进行了测试。潜在产量（Yp），胁迫产量（Ys），胁迫及时指数（PIS）和非胁迫（PINS），发芽胁迫指数（GSJ），胁迫耐受指数（STI），胚芽鞘长度（COL），初级记录根长（PRL）和主根编号（PRN）。方差分析的结果显示，所有性状的品系之间都存在非常显着的差异，除了PRN表示存在遗传变异以及控制所研究性状的基因可能存在染色体定位。不同性状的均值比较显示，大多数控制产量和耐旱性状的基因位于7R，3R和5R染色体上。 GSI附加系的聚类分析也将携带这些染色体的系置于GSI较高的组中。相关分析表明，STI与GSI，COL和PRL之间有很强的关联。因此，可以对这些标准进行筛选，以间接选择农作物生长初期的耐旱性。

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