INTERACTIVE EFFECTS OF SALINITY, NITRATE, LIGHT, AND SEED WEIGHT ON THE GERMINATION OF THE HALOPHYTE CRITHMUM MARITIMUM

被引：20

作者：

Atia, A. ^{[1
]}

Debez, A. ^{[1
]}

Rabhi, M. ^{[1
]}

Smaoui, A. ^{[1
]}

Abdelly, C. ^{[1
]}

机构：

[1] Ctr Biotechnol Technopole Borj Cedria, Lab Adaptat Plantes Stress Abiot, Hammam Lif 2050, Tunisia

来源：

ACTA BIOLOGICA HUNGARICA | 2009年 / 60卷 / 04期

关键词：

Crithmum maritimum; germination; halophyte; light; nitrate; salinity; TEMPERATURE; DORMANCY; GROWTH;

D O I：

10.1556/ABiol.60.2009.4.9

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Interaction of salinity, nitrate, light, and seed weight on the germination of Crithmum maritimum was investigated. Seeds of three size categories were germinated at 0-200 mM NaCl with either 0, 5 or 20 mM KNO3. Experiments were done under darkness, white light, or red light. Regardless of seed weight, germination was maximal in distilled water. Under salinity, the smallest seeds showed the highest germination percentage. Salt impact was amplified by darkness, but was mitigated by nitrate supply, red light and their combination. At the same PPFD, germination of T2 seeds was higher, when exposed to red light than under white light, suggesting that germination was more influenced by the light type than by the PPFD. As a whole, not only salinity, nutrient availability, seed weight, and light, but also their interaction may control the germination of this halophyte.

引用

页码：433 / 439

页数：7

共 16 条

[1] GERMINATION DIMORPHISM IN HETEROTHECA-SUBAXILLARIS VAR SUBAXILLARIS [J].