Priming effect on seed germination: Is it always positive for cacti species?

被引：9
|
作者：
Santini, Bianca A. [1 ]
Rojas-Arechiga, Mariana [2 ]
Garcia Morales, Erick [2 ]
机构：
[1] Univ Nacl Autonoma Mexico, Inst Ecol, Dept Ecol Func, Ciudad Univ, Ciudad De Mexico 04510, Mexico
[2] Univ Nacl Autonoma Mexico, Inst Ecol, Dept Ecol Biodiversidad, Ciudad Univ, Ciudad De Mexico 04510, Mexico
来源：
JOURNAL OF ARID ENVIRONMENTS | 2017年 / 147卷
关键词：
Hydration-dehydration cycles; Cacti; Percentage of germination; t50; Deserts; Drylands; Hydropriming; HYDRATION MEMORY; CACTACEAE; EXPRESSION; MEXICAN;
D O I：
10.1016/j.jaridenv.2017.07.013
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
In drylands, cacti seeds experience high variability amounts of precipitation throughout a year.. Seeds undergo hydration and dehydration cycles (or priming) which can increase the proportion or the speed of germination. However, these advantages differ among cacti. In this study, we test the effect of priming on the germination percentage and the mean germination time of two cacti species. We show that priming does not increase the germination percentage for these cacti species, but does reduce the time to germination. We suggest that the response of cacti seeds could be an adaptation to their habitat and microhabitat conditions. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：155 / 158
页数：4
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