Growth and physiological characterization of low nitrogen responses in Tibetan wild barley (Hordeum spontaneum) and cultivated barley (Hordeum vulgare)

被引：10

作者：

Shah, Jawad Munawar ^{[1
]}

Asgher, Zeshan ^{[1
]}

Zeng, Jianbin ^{[1
]}

Quan, Xiaoyan ^{[1
]}

Ali, Essa ^{[1
]}

Shamsi, Imran Haider ^{[1
]}

Zhang, Guoping ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Agron, Coll Agr & Biotechnol, Hangzhou 310058, Zhejiang, Peoples R China

来源：

JOURNAL OF PLANT NUTRITION | 2017年 / 40卷 / 06期

关键词：

antioxidant enzyme; cultivar; low nitrogen; nitrogen use efficiency; Tibetan wild barley; USE EFFICIENCY; CHLOROPHYLL FLUORESCENCE; GENETIC-VARIABILITY; ANTIOXIDANT ENZYMES; CEREAL PRODUCTION; GAS-EXCHANGE; WATER-STRESS; RICE PLANTS; DEFICIENCY; LEAVES;

D O I：

10.1080/01904167.2016.1262405

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Development of crop cultivars with high yield under low nitrogen (N) supply is a basic approach for the enhancement of agricultural sustainability. The previous studies showed that Tibetan wild barley shows wider genetic diversity in abiotic stress and poor fertility tolerance. In this study, four barley genotypes (two Tibetan wild and two cultivated), differing in N use efficiency (NUE), were characterized for their growth and physiological responses to low N stress. The genotypes ZD9 (cultivated) and XZ149 (wild) with high NUE performed better in terms of shoot dry weight (DW) and photosynthetic parameters under both low and normal N levels and had higher antioxidative enzyme activities, N concentration, and accumulation in both shoots and roots under low N stress. The current results showed the substantial difference among barley genotypes in low N tolerance and verified the significance of Tibetan wild barley in the genetic improvement of cultivated barley in NUE.

引用

页码：861 / 868

页数：8

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