干旱区生态环境知识资源中心(Arid): Roots of Lucerne Seedlings are More Resilient to a Water Deficit than Leaves or Stems

Arid

DOI	10.3390/agronomy9030123
	Roots of Lucerne Seedlings are More Resilient to a Water Deficit than Leaves or Stems
	Luo, Yong-Zhong 1; Liu, Hui 2; Yan, Guijun 2; Li, Guang 1; Turner, Neil C.2,3
通讯作者	Luo, Yong-Zhong ; Turner, Neil C.
来源期刊	AGRONOMY-BASEL
ISSN	2073-4395
出版年	2019
卷号	9 期号:3
英文摘要	Drought is one of the most harmful environmental stresses affecting the physiological, biochemical processes and growth of plants. Lucerne or alfalfa (Medicago sativa L.), one of the most popular pasture species in arid and semi-arid regions, plays a critical role in sustaining agricultural systems in many areas of the world. In order to evaluate the effect of water shortage on water status, biomass distribution and proline content, the relative water content (RWC), biomass and proline concentration in the leaves, stems and roots of lucerne seedlings under three different water regimes were studied in pots under a rainout shelter. The results showed that after water was withheld, the RWC of the different organs decreased significantly; at the same soil water content, the leaf RWC was higher than that of the stem and root. The biomass of the leaves, stems and roots were all reduced by water stress, while the root-shoot ratio increased indicating that the roots were less affected than the leaves and stems. Proline concentration increased with decreasing soil water content with the leaf proline concentration increasing more than that of stems and roots. These results indicate that roots of lucerne seedlings show greater resilience to water deficits than shoots.
英文关键词	Medicago sativa (L.) relative water content biomass proline concentration root shoot ratio drought adaptation
类型	Article
语种	英语
国家	Peoples R China ; Australia
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000464378300001
WOS关键词	MEDICAGO-SATIVA L. ; OSMOTIC ADJUSTMENT ; LOESS PLATEAU ; DROUGHT ; PROLINE ; STRESS ; BIOMASS ; GROWTH ; ADAPTATION ; OSMOREGULATION
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
来源机构	University of Western Australia
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214091
作者单位	1.Gansu Agr Univ, Coll Forestry, Lanzhou 730070, Gansu, Peoples R China; 2.Univ Western Australia, UWA Sch Agr & Environm, Locked Bag 5005, Perth, WA 6001, Australia; 3.Univ Western Australia, UWA Inst Agr, M082,Locked Bag 5005, Perth, WA 6001, Australia
推荐引用方式 GB/T 7714	Luo, Yong-Zhong,Liu, Hui,Yan, Guijun,et al. Roots of Lucerne Seedlings are More Resilient to a Water Deficit than Leaves or Stems[J]. University of Western Australia,2019,9(3).
APA	Luo, Yong-Zhong,Liu, Hui,Yan, Guijun,Li, Guang,&Turner, Neil C..(2019).Roots of Lucerne Seedlings are More Resilient to a Water Deficit than Leaves or Stems.AGRONOMY-BASEL,9(3).
MLA	Luo, Yong-Zhong,et al."Roots of Lucerne Seedlings are More Resilient to a Water Deficit than Leaves or Stems".AGRONOMY-BASEL 9.3(2019).