Artemisia monosperma achene germination in sand: effects of sand depth, sand/water content, cyanobacterial sand crust and temperature

被引：75

作者：

Huang, ZY

Gutterman, Y

机构：

[1] Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, IL-84990 Beer Sheva, Israel

[2] Ben Gurion Univ Negev, Dept Life Sci, IL-84990 Beer Sheva, Israel

[3] NW Univ Xian, Inst Bot, Xian 710069, Shaanxi, Peoples R China

来源：

JOURNAL OF ARID ENVIRONMENTS | 1998年 / 38卷 / 01期

关键词：

cyanobacterial sand crust; germination depth under sand; harvest date; light; mucilaginous achenes; sand/water content; temperatures;

D O I：

10.1006/jare.1997.0329

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The mucilaginous achenes of Artemisia monosperma, a dominant perennial shrub in sandy deserts, germinate in light but poorly in dark. The deeper the achenes in sand, the lower and slower their germination. No seedlings emerged from deeper than 4 cm, but seedlings emerged after removal of the upper 3 cm or when exposed to light from below. In natural conditions seedlings emerge from a depth of 0.1 to 1.8 cm. The higher the sand/water content, the earlier the germination. The date of achene maturation also affects germination. Germination is inhibited on cyanobacterial sand crust and at 0.5 cm to 1 cm below this crust, even if aerated. (C) 1998 Academic Press Limited.

引用

页码：27 / 43

页数：17