干旱区生态环境知识资源中心(Arid): Characterisation of seed dormancy of 12 Chilean species of Nolana (Solanaceae) from the coastal Atacama Desert

Arid

DOI	10.1017/S0960258520000434
	Characterisation of seed dormancy of 12 Chilean species of Nolana (Solanaceae) from the coastal Atacama Desert
	Hepp, Josefina; Gomez, Miguel; Leon-Lobos, Pedro; Montenegro, Gloria; Vilalobos, Luis; Contreras, Samuel
通讯作者	Contreras, S (corresponding author), Pontificia Univ Catolica Chile, Fac Agron & Ingn Forestal, Dept Ciencias Vegetales, Santiago, Chile. ; Contreras, S (corresponding author), Pontificia Univ Catolica Chile, Ctr Desierto Atacama, Santiago, Chile.
来源期刊	SEED SCIENCE RESEARCH
ISSN	0960-2585
EISSN	1475-2735
出版年	2021
卷号	31 期号:1 页码:20-29
英文摘要	The genus Nolana (Solanaceae) comprises numerous species endemic to the coastal Atacama Desert of Chile and Peru of high ornamental potential and conservation value. The environments in which these species have evolved and are present today correspond to particular conditions in the midst of a hyper-arid habitat, so the study of their germination requirements and characterisation of seed dormancy becomes important in terms of conservation but also for ecological and evolutionary purposes. Different treatments were performed on mericarps of 12 species of Nolana: control (intact seeds imbibed in distilled water), scarification in funicular plug and distilled water and scarification in funicular plug and addition of GA(3) (500 ppm); their permeability to water was also tested. It was determined that the species did not present physical dormancy, as had been previously reported, but rather physiological dormancy (PD). Germination results after treatments were not homogeneous among all 12 species, indicating differences in their dormancy levels. Also, the important role of the endosperm in the prevention of germination for the studied Nolana species was highlighted. Regarding the relationship between the level of PD (expressed as the percentage of germination for the most successful treatment) and the latitudinal distribution of the species or their phylogenetic closeness, it was determined that, for the studied species, their proximity in terms of clades was more relevant than their latitudinal distribution.
英文关键词	endosperm funicular plug germination lomas vegetation mericarp physiological dormancy
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000647475800002
WOS关键词	GERMINATION ; PHYLOGENY ; DIVERSITY ; TARAPACA ; SOUTH
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351755
作者单位	[Hepp, Josefina; Gomez, Miguel; Montenegro, Gloria; Contreras, Samuel] Pontificia Univ Catolica Chile, Fac Agron & Ingn Forestal, Dept Ciencias Vegetales, Santiago, Chile; [Hepp, Josefina; Gomez, Miguel; Montenegro, Gloria; Contreras, Samuel] Pontificia Univ Catolica Chile, Ctr Desierto Atacama, Santiago, Chile; [Leon-Lobos, Pedro] INIA, Inst Invest Agr, Ctr Reg Invest La Platina, Santiago, Chile; [Vilalobos, Luis] Univ Chile, Fac Ciencias Agron, Lab Fisiol Estres Plantas, Santiago, Chile
推荐引用方式 GB/T 7714	Hepp, Josefina,Gomez, Miguel,Leon-Lobos, Pedro,et al. Characterisation of seed dormancy of 12 Chilean species of Nolana (Solanaceae) from the coastal Atacama Desert[J],2021,31(1):20-29.
APA	Hepp, Josefina,Gomez, Miguel,Leon-Lobos, Pedro,Montenegro, Gloria,Vilalobos, Luis,&Contreras, Samuel.(2021).Characterisation of seed dormancy of 12 Chilean species of Nolana (Solanaceae) from the coastal Atacama Desert.SEED SCIENCE RESEARCH,31(1),20-29.
MLA	Hepp, Josefina,et al."Characterisation of seed dormancy of 12 Chilean species of Nolana (Solanaceae) from the coastal Atacama Desert".SEED SCIENCE RESEARCH 31.1(2021):20-29.