干旱区生态环境知识资源中心(Arid): Influence of current and future climate on the seed germination of Cenostigma microphyllum (Mart. ex G. Don) E. Gagnon & G. P. Lewis

Arid

DOI	10.1007/s12224-019-09353-4
	Influence of current and future climate on the seed germination of Cenostigma microphyllum (Mart. ex G. Don) E. Gagnon & G. P. Lewis
	Vieira Gomes, Samara Elizabeth 1; de Oliveira, Gilmara Moreira 2; Araujo, Marcelo do Nascimento 3; Seal, Charlotte E.4; Dantas, Barbara Franca 3,5
通讯作者	Dantas, Barbara Franca
来源期刊	FOLIA GEOBOTANICA
ISSN	1211-9520
EISSN	1874-9348
出版年	2019
卷号	54 期号:1-2 页码:19-28
英文摘要	Seasonally tropical dry forests are among the most threatened environments by climate change. However, these forests, which are at risk of desertification, are still poorly studied and conserved. Seeds of several species endemic to the Caatinga, a Brazilian dry forest, are also understudied, mainly regarding their ability to cope with a hotter and drier climate predicted for the future. For the first time in seeds of Cenostigma microphyllum (Leguminosae), we aimed to study the presence of physical dormancy, temperature and salt tolerance to ascertain the effects of current and future climate on seed germination. Intact and scarified seeds were investigated by incubating at constant temperatures (15 to 40 degrees C) or in NaCl solutions (-0.2 to -1.0 MPa) at 25 and 30 degrees C. Thermal and osmotic thresholds, as well as thermal time and hydrotime constants, were calculated using linear regressions between the germination conditions and germination rate. To predict germination in the future, a heat sum model based on thermal time and hydrotime was applied to current and future climate scenarios. Seeds of C. microphyllum were permeable to water and did not have physical dormancy. The results indicated that increases in temperature are unlikely to affect germination, despite greater sensitivity to salinity presented at higher temperatures. In a future climate, the reduction in the number of weeks with at least 15 mm rainfall will affect the germination timing for the seeds. Thus, we can conclude that under the most pessimistic climate scenario predicted for the future, the seed germination of C. microphyllum may be restricted, likely leading to low seedling recruitment and establishment.
英文关键词	temperature salt stress climate change thermal time model hydrotime model
类型	Article
语种	英语
国家	Brazil ; England
收录类别	SCI-E
WOS记录号	WOS:000497810100001
WOS关键词	GRAIN LEGUMES ; TEMPERATURES ; STRESS ; GROWTH ; CONSEQUENCES ; POTENTIALS ; EMERGENCE ; CHICKPEA
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
EI主题词	2019-11-21
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310963
作者单位	1.Univ Estado Bahia, Postgrad Programme Agronomy Irrigated Hort, Ave Edgard Chastinet Guimaraes, BR-48905680 Juazeiro, BA, Brazil; 2.Univ Feira De Santana, Post Programme Plant Genet Resources, Ave Transnordestina,S-N-Novo Horizonte, BR-44036900 Feira De Santana, BA, Brazil; 3.Uninassau Coll, Clementino Coelho 714, BR-56308210 Petrolina, PE, Brazil; 4.Royal Bot Gardens, Dept Comparat Plant & Fungal Biol, Wakehurst Pl, Ardingly, England; 5.Embrapa Semiarid, BR 428,Km 152,Zona Rural,Caixa Postal 23, BR-56302970 Petrolina, PE, Brazil
推荐引用方式 GB/T 7714	Vieira Gomes, Samara Elizabeth,de Oliveira, Gilmara Moreira,Araujo, Marcelo do Nascimento,et al. Influence of current and future climate on the seed germination of Cenostigma microphyllum (Mart. ex G. Don) E. Gagnon & G. P. Lewis[J],2019,54(1-2):19-28.
APA	Vieira Gomes, Samara Elizabeth,de Oliveira, Gilmara Moreira,Araujo, Marcelo do Nascimento,Seal, Charlotte E.,&Dantas, Barbara Franca.(2019).Influence of current and future climate on the seed germination of Cenostigma microphyllum (Mart. ex G. Don) E. Gagnon & G. P. Lewis.FOLIA GEOBOTANICA,54(1-2),19-28.
MLA	Vieira Gomes, Samara Elizabeth,et al."Influence of current and future climate on the seed germination of Cenostigma microphyllum (Mart. ex G. Don) E. Gagnon & G. P. Lewis".FOLIA GEOBOTANICA 54.1-2(2019):19-28.