干旱区生态环境知识资源中心(Arid): A consistent CO(2)assimilation rate and an enhanced root development drives the tolerance mechanism inZiziphus jujubaunder soil water deficit

Arid

DOI	10.1080/15324982.2020.1748140
	A consistent CO(2)assimilation rate and an enhanced root development drives the tolerance mechanism inZiziphus jujubaunder soil water deficit
	Sabir, Muhammad Azeem; Rasheed, Fahad; Zafar, Zikria; Khan, Imran; Nawaz, Muhammad Farrakh; ul Haq, Ihsan; Bilal, Muhammad
通讯作者	Rasheed, F
来源期刊	ARID LAND RESEARCH AND MANAGEMENT
ISSN	1532-4982
EISSN	1532-4990
出版年	2020
卷号	34 期号:4 页码:392-404
英文摘要	Shifting toward stress-resistant planting material has become a pre-requisite for fruit tree culture under arid to the semiarid environment. No information currently exists on the physiological basis of water stress tolerance inZiziphus jujubaat the saplings stage, an important fruit tree of semiarid regions of Central Punjab. Therefore, an experiment was conducted under controlled conditions where plants were subjected to three watering regimes: control irrigation, a medium, and a high-water deficit treatment. During the experiment, growth, biomass production and allocation in different plant organs (leaves, stem, and root) were measured. The physiological response ofZ. jujubaunder water deficit was determined through a gas exchange system and CO(2)assimilation rate, stomatal conductance, and water use efficiency were evidenced. Biomass production/allocation in leaves and stem decreased significantly with an increase in soil water deficit. Root biomass production remained unchanged (p = 0.907), but allocation increased significantly under high soil water deficit (p < 0.001). Net CO(2)assimilation rate (A) remained similar at 6.54 +/- 0.32 mu mol m(-2) s(-1)but, stomatal conductance (gs) decreased significantly from 94.0 to 69.2 mmol m(-2) s(-1)under high water deficit treatment. Water use efficiency (ratio between Net CO(2)assimilation rate and transpiration rate) also increased significantly (p = 0.012) under high water deficit treatment.Ziziphus jujubashowed a medium degree of plasticity under water deficit conditions, which was mainly driven by a sustained CO(2)assimilation rate and more biomass allocation for root development.
英文关键词	Biomass production and allocation leaf gas exchange water stress water use efficiency
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000558450400001
WOS关键词	BETULA-PENDULA ROTH ; TRANSPIRATION EFFICIENCY ; STOMATAL CONDUCTANCE ; GENOTYPIC VARIATION ; GENE-EXPRESSION ; DROUGHT ; LEAF ; GROWTH ; STRESS ; PHOTOSYNTHESIS
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325551
作者单位	[Sabir, Muhammad Azeem; Rasheed, Fahad; Zafar, Zikria; Nawaz, Muhammad Farrakh; ul Haq, Ihsan; Bilal, Muhammad] Univ Agr Faisalabad, Dept Forestry & Range Management, Jail Rd, Faisalabad 38040, Pakistan; [Khan, Imran] Univ Agr Faisalabad, Dept Agron, Faisalabad, Pakistan
推荐引用方式 GB/T 7714	Sabir, Muhammad Azeem,Rasheed, Fahad,Zafar, Zikria,et al. A consistent CO(2)assimilation rate and an enhanced root development drives the tolerance mechanism inZiziphus jujubaunder soil water deficit[J],2020,34(4):392-404.
APA	Sabir, Muhammad Azeem.,Rasheed, Fahad.,Zafar, Zikria.,Khan, Imran.,Nawaz, Muhammad Farrakh.,...&Bilal, Muhammad.(2020).A consistent CO(2)assimilation rate and an enhanced root development drives the tolerance mechanism inZiziphus jujubaunder soil water deficit.ARID LAND RESEARCH AND MANAGEMENT,34(4),392-404.
MLA	Sabir, Muhammad Azeem,et al."A consistent CO(2)assimilation rate and an enhanced root development drives the tolerance mechanism inZiziphus jujubaunder soil water deficit".ARID LAND RESEARCH AND MANAGEMENT 34.4(2020):392-404.