Arid
DOI10.1080/15324980701429342
Seed size effects on seedling emergence of desert psammophytes in China
Tobe, Kazuo; Zhang, Liping; Ornasa, Kenji
通讯作者Tobe, Kazuo
来源期刊ARID LAND RESEARCH AND MANAGEMENT
ISSN1532-4982
EISSN1532-4990
出版年2007
卷号21期号:3页码:181-192
英文摘要

To investigate the effects of seed size on the behavior of seeds and seedlings in sand, seedling emergence from sand was examined in Caragana korshinskii (Fabaceae; mean seed weight 65 mg) and Atraphaxis bracteata (Polygonaceae; mean seed weight 5.7 mg), two shrubs with nonphotoblastic seeds that grow on desert sand dunes in China. Seeds were sown at depths of 0 to 50 mm in sand-filled pots, and the pots were irrigated under different regimes. The results suggest that for both species, a high proportion of the seeds buried fairly deep germinate during the summer rainy season with or without producing emergent seedlings, whereas at shallow depths, where moisture is more likely to be lost by evaporation, some proportion of the seeds remain ungerminated and viable. Comparison of results in this study with those on several smaller-seeded species used in our previous studies shows that larger seeds did not always give rise to seedlings capable of emerging from deeper depths in sand. We suggested that for nonphotoblastic seeds, seed size is not a crucial determinant of the proportion of seeds that produce emergent seedlings infield conditions.


英文关键词Atraphaxis bracteata Caragana korshinskii irrigation sand dunes seed burial depth seed fate seed weight water availability
类型Article
语种英语
国家Japan ; Peoples R China
收录类别SCI-E
WOS记录号WOS:000247999200002
WOS关键词SHEAR-STRENGTH CONDITIONS ; TRITICUM-AESTIVUM L ; SHORTGRASS STEPPE ; SOIL STRENGTH ; SAND BURIAL ; GERMINATION ; WATER ; TEMPERATURE ; GROWTH ; DUNES
WOS类目Environmental Sciences ; Soil Science
WOS研究方向Environmental Sciences & Ecology ; Agriculture
来源机构中国科学院西北生态环境资源研究院
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/153526
作者单位(1)Natl Inst Environm Studies, Tsukuba, Ibaraki 305, Japan;(2)Chinese Acad Sci, Cold & Arid Regions Environm & Engn Res Inst, Lanzhou, Peoples R China;(3)Univ Tokyo, Grad Sch Agr & Life Sci, Tokyo, Japan
推荐引用方式
GB/T 7714
Tobe, Kazuo,Zhang, Liping,Ornasa, Kenji. Seed size effects on seedling emergence of desert psammophytes in China[J]. 中国科学院西北生态环境资源研究院,2007,21(3):181-192.
APA Tobe, Kazuo,Zhang, Liping,&Ornasa, Kenji.(2007).Seed size effects on seedling emergence of desert psammophytes in China.ARID LAND RESEARCH AND MANAGEMENT,21(3),181-192.
MLA Tobe, Kazuo,et al."Seed size effects on seedling emergence of desert psammophytes in China".ARID LAND RESEARCH AND MANAGEMENT 21.3(2007):181-192.
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