Physiological and Molecular Responses to Controlled Severe Drought in Two Barley (Hordeum Vulgare L.) Genotypes

被引：11

作者：

Harb, Amal M. ^{[1
]}

Samarah, Nezar H. ^{[2
]}

机构：

[1] Yarmouk Univ, Dept Biol Sci, Yarmouk Univ St,POB 566, Irbid 21163, Jordan

[2] Jordan Univ Sci & Technol, Dept Crop Prod, Irbid, Jordan

来源：

JOURNAL OF CROP IMPROVEMENT | 2015年 / 29卷 / 01期

关键词：

controlled severe drought; drought responsive-genes; gene expression; time course; vegetative stage;

D O I：

10.1080/15427528.2014.976802

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Drought is a major abiotic stress that restricts growth and productivity of many crops. The objectives of this study were to assess the morphological and physiological responses of barley plants at the vegetative stage to controlled severe drought, and to test the expression of drought-responsive genes (HvHsdr4, HvNCED2, HvDHN1, HvDHN9, and HvCBF3) in a time course of drought treatment. Barley plants of two genotypes (Rum and Yarmouk) were exposed to controlled severe drought (25% field capacity) in a greenhouse experiment. The two genotypes showed a similar and significant reduction in net photosynthetic rate and plant height. At the molecular level, a differential gene expression of drought-responsive genes was shown between the two genotypes. The results indicate that drought-responsive genes can be useful marker genes to study the differential response of barley genotypes to drought stress conditions.

引用

页码：82 / 94

页数：13

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