干旱区生态环境知识资源中心(Arid): MICROMORPHOLOGICAL OBSERVATION OF EUCALYPTUS SEEDS, MULTIVARIATE STATISTICAL ANALYSES AND MODELING OF THEIR GERMINATION UNDER SALT STRESS AND OSMOTIC CONSTRAINT

Arid

DOI	10.1590/01047760201925022635
	MICROMORPHOLOGICAL OBSERVATION OF EUCALYPTUS SEEDS, MULTIVARIATE STATISTICAL ANALYSES AND MODELING OF THEIR GERMINATION UNDER SALT STRESS AND OSMOTIC CONSTRAINT
	Mechergui, Kaouther 1; Jaouadi, Wahbi 1,2; Naghmouchi, Souheila 3; Alsubeie, Moodi 4; Khouja, Mohamed Larbi 1
通讯作者	Jaouadi, Wahbi
来源期刊	CERNE
ISSN	0104-7760
出版年	2019
卷号	25 期号:2 页码:156-171
英文摘要	Micromorphological characters including surface, length and width of seeds were recorded for 19 species of Eucalyptus (Myrtaceae) using stereomicroscope to determine the importance of seed morphological characters as an additional tool for identification. With the aim of selecting and valorizing abiotic-stress-tolerant species with landscape and industrial values and would be a potential solution for valorizing dry arid area and development of land degradation, we launched the assessment of the performance of five Eucalyptus species (E. torquata, E. sargenti, E. gillii, E. gomphocephala x E. cornuta and E. microtheca) under salinity and osmotic potential constraints. Several NaCl concentrations (0, 3, 6, 9, 12, and 15 g.L-1) and several osmotic potentials (0, -0.03, -0.1, -0.7, -1 and -1.6 MPa) were applied to seeds cultivated in petri dishes for a period of one month. Germination rates, means time of germination and coefficent of velocity were evaluated to better understand the salt stress and osmotic potential effect on germination. Univariate and multivariate analyses were used to identify the major characteristics pertaining to salinity tolerance. Modeling of germination under both constraints saline and osmotic stress is carried out to predict the behavior of the species. The hybrid E. gomphocephala x E. cornuta was more tolerant to salt stress (15 % at 12 g.L-1) and osmotic potential (61 % at -1.6 MPa) than the others species of Eucalyptus; it showed a higher germination percentage under all tested potentials, when compared to the not hybrid species of Eucalyptus. Our analyses of seeds morphology revealed that the observations shown diversity of morphological characters in seeds. Area, length and width of seeds vary significantly between species of Eucalyptus. Micromorphological characters can provide basis for classification and delimitation of genus Eucalyptus.
英文关键词	Eucalyptus Seeds morphology trait Salt stress Osmotic potentials Principal component analysis Modeling
类型	Article
语种	英语
国家	Tunisia ; Saudi Arabia
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000484848300004
WOS关键词	ESSENTIAL OILS ; PHYSIOLOGICAL-RESPONSES ; IRRIGATED PLANTATION ; ABIOTIC STRESS ; WATER-USE ; GROWTH ; TOLERANCE ; SALINITY ; CAMALDULENSIS ; BIOMASS
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214859
作者单位	1.Carthage Univ, Natl Res Inst Rural Engn Water & Forestry INRGREF, Hedi Karrai St,POB 10, Ariana 2080, Tunisia; 2.Fendouba Univ, Silvo Pastoral Inst Tabarka, Tabarka 8110, Tunisia; 3.Princess Norah Bint Abdurrahman Univ, Coll Sci, Biol Dept, Riyadh, Saudi Arabia; 4.Imam Muhammed bin Saud Islamic Univ, Coll Sci, Biol Dept, Riyadh, Saudi Arabia
推荐引用方式 GB/T 7714	Mechergui, Kaouther,Jaouadi, Wahbi,Naghmouchi, Souheila,et al. MICROMORPHOLOGICAL OBSERVATION OF EUCALYPTUS SEEDS, MULTIVARIATE STATISTICAL ANALYSES AND MODELING OF THEIR GERMINATION UNDER SALT STRESS AND OSMOTIC CONSTRAINT[J],2019,25(2):156-171.
APA	Mechergui, Kaouther,Jaouadi, Wahbi,Naghmouchi, Souheila,Alsubeie, Moodi,&Khouja, Mohamed Larbi.(2019).MICROMORPHOLOGICAL OBSERVATION OF EUCALYPTUS SEEDS, MULTIVARIATE STATISTICAL ANALYSES AND MODELING OF THEIR GERMINATION UNDER SALT STRESS AND OSMOTIC CONSTRAINT.CERNE,25(2),156-171.
MLA	Mechergui, Kaouther,et al."MICROMORPHOLOGICAL OBSERVATION OF EUCALYPTUS SEEDS, MULTIVARIATE STATISTICAL ANALYSES AND MODELING OF THEIR GERMINATION UNDER SALT STRESS AND OSMOTIC CONSTRAINT".CERNE 25.2(2019):156-171.