Arid
DOI10.1016/j.jaridenv.2008.12.012
Effect of environmental heterogeneity on field germination of Opuntia tomentosa (Cactaceae, Opuntioideae) seeds
Olvera-Carrillo, Y.3; Mendez, I.2; Sanchez-Coronado, M. E.1; Marquez-Guzman, J.3; Barradas, V. L.1; Huante, P.1; Orozco-Segovia, A.1
通讯作者Orozco-Segovia, A.
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
出版年2009
卷号73期号:4-5页码:414-420
英文摘要

We studied in Opuntia tomentosa the effect of plant shade (orientation and distance), and the place where the seeds remained before germination. Seeds were collected in 1998 and a) sown immediately on soil (non-buried seeds), b) stored in the laboratory and sown on soil during the 1999 rainy season (control) or c) buried after collection (under the shade of a tree, a rock and in an open space), exhumed 7 months later and sown in 1999 (exhumed seeds). Seeds were sown under or outside the shade of several trees: or on the northern, eastern and western sides of a 14-m-tall tree. In 1999, germination was high in all samples, but the control seeds had delayed germination. After two rainy seasons, non-buried seeds had the lowest germination rate. Germination was not affected by the distance from the tree. Outside of the plant’s shade, germination was low. Germination was affected more by the environmental heterogeneity than by the individual plant shade. Germination probabilities were the highest at 16-19 degrees C; field germination was zero at 20.6 degrees C. Seed polymorphism and microenvirommental heterogeneity spread germination across two rainy seasons creating a permanent seed bank. (C) 2008 Elsevier Ltd. All rights reserved


英文关键词Lava field Physiological dormancy Plant shade effect Safe sites Seed burial
类型Article
语种英语
国家Mexico
收录类别SCI-E
WOS记录号WOS:000264614300003
WOS关键词SONORAN DESERT CACTI ; CHIHUAHUAN DESERT ; NURSE PLANTS ; 2 HABITATS ; SEEDLINGS ; DORMANCY ; MEXICO ; LIFE ; HYDRATION ; RASTRERA
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
来源机构Universidad Nacional Autónoma de México
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/161328
作者单位1.Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City 04510, DF, Mexico;
2.Univ Nacl Autonoma Mexico, Inst Invest Matematicas Aplicadas & Sistemas, Mexico City 04510, DF, Mexico;
3.Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Comparada, Mexico City 04510, DF, Mexico
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Olvera-Carrillo, Y.,Mendez, I.,Sanchez-Coronado, M. E.,et al. Effect of environmental heterogeneity on field germination of Opuntia tomentosa (Cactaceae, Opuntioideae) seeds[J]. Universidad Nacional Autónoma de México,2009,73(4-5):414-420.
APA Olvera-Carrillo, Y..,Mendez, I..,Sanchez-Coronado, M. E..,Marquez-Guzman, J..,Barradas, V. L..,...&Orozco-Segovia, A..(2009).Effect of environmental heterogeneity on field germination of Opuntia tomentosa (Cactaceae, Opuntioideae) seeds.JOURNAL OF ARID ENVIRONMENTS,73(4-5),414-420.
MLA Olvera-Carrillo, Y.,et al."Effect of environmental heterogeneity on field germination of Opuntia tomentosa (Cactaceae, Opuntioideae) seeds".JOURNAL OF ARID ENVIRONMENTS 73.4-5(2009):414-420.
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