干旱区生态环境知识资源中心(Arid): Morphological and biochemical changes in maize under drought and salinity stresses in a semi-arid environment

Arid

DOI	10.1080/11263504.2019.1635221
	Morphological and biochemical changes in maize under drought and salinity stresses in a semi-arid environment
	Romdhane, Leila 1; Radhouane, Leila 1; Farooq, Muhammad 2; Dal Cortivo, Cristian 3; Panozzo, Anna 3; Vamerali, Teofilo 3
通讯作者	Vamerali, Teofilo
来源期刊	PLANT BIOSYSTEMS
ISSN	1126-3504
EISSN	1724-5575
出版年	2020
卷号	154 期号:3 页码:396-404
英文摘要	This study investigated some morphological and biochemical responses of maize to drought and salinity in open field in Tunisia with the aim of gaining insights into tolerance mechanisms. After seedling emergence, five treatments were applied until maturity: optimal water supply (control, 100% of maximum evapotranspiration - ETM); irrigation at 70% ETM (moderate drought) and at 35% ETM (severe drought); optimal supply of water containing 3 g NaCl L-1 (moderate salinity) and 6 g NaCl L-1 (severe salinity). Here, we demonstrated that extreme drought and salinity severely decreased the leaf area (-74% and -55%, respectively) and the above-ground biomass (-35% and -31%, respectively) at silking stage, indicating that the photosynthetic leaf apparatus is highly sensitive and that drought has a greater effect than salinity. Grain yield losses were also exacerbated under extreme stress conditions, viz. severe drought (-85% versus controls) and severe salinity (-73%), while productivity under moderate salinity approximated that of moderate drought, possibly due to increases in leaf chlorophyll and carotenoid content and K/Na ratio. The leaf area and its relative water content were positively correlated with grain yield under both salinity and drought stresses, and may therefore be used as markers for effective screening of maize genotypes for better stress tolerance.
英文关键词	Carotenoids chlorophyll drought and salinity stress maize hybrid leaf area proline
类型	Article
语种	英语
国家	Tunisia ; Oman ; Italy
收录类别	SCI-E
WOS记录号	WOS:000474999500001
WOS关键词	ZEA-MAYS L. ; OSMOTIC ADJUSTMENT ; GROWTH-PARAMETERS ; GIBBERELLIC-ACID ; GLYCINE BETAINE ; SALT TOLERANCE ; DURUM-WHEAT ; K+ FLUX ; WATER ; PROLINE
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218020
作者单位	1.Univ Carthage, Natl Inst Agron Res Tunisia INRAT, Ariana, Tunisia; 2.Sultan Qaboos Univ, Coll Agr & Marine Sci, Dept Crop Sci, Muscat, Oman; 3.Univ Padua, Dept Agron Food Nat Resources Anim & Environm, I-35020 Padua, Italy
推荐引用方式 GB/T 7714	Romdhane, Leila,Radhouane, Leila,Farooq, Muhammad,et al. Morphological and biochemical changes in maize under drought and salinity stresses in a semi-arid environment[J],2020,154(3):396-404.
APA	Romdhane, Leila,Radhouane, Leila,Farooq, Muhammad,Dal Cortivo, Cristian,Panozzo, Anna,&Vamerali, Teofilo.(2020).Morphological and biochemical changes in maize under drought and salinity stresses in a semi-arid environment.PLANT BIOSYSTEMS,154(3),396-404.
MLA	Romdhane, Leila,et al."Morphological and biochemical changes in maize under drought and salinity stresses in a semi-arid environment".PLANT BIOSYSTEMS 154.3(2020):396-404.