干旱区生态环境知识资源中心(Arid): Germination of Larrea divaricata Cav, an important shrub species to restore desertified arid ecosystems

Arid

DOI	10.1016/j.jaridenv.2020.104175
	Germination of Larrea divaricata Cav, an important shrub species to restore desertified arid ecosystems
	Ariel Hernandez, Jorge; Roberto Perez, Daniel; Alberto Busso, Carlos
通讯作者	Busso, CA
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2020
卷号	179
英文摘要	Knowledge of pre-germination seed treatments is critical for ecological restoration practices such as outplantings or direct seeding. However, in drylands, there is a lack of this kind of information about some species with high potential value for ecological restoration. This is the case of Larrea divaricata Cav., a native species that is dominant and can grow in degraded environments to the Monte region and arid ecosystems in Argentina. We evaluated the effects of the following treatments to break seed dormancy in this species: 1) alternation of soaking and drying periods; (2) periods of soaking and rinsing with running water; (3) mechanical scarification, and (4) control. Seed scarification was done using a novel mechanical method using two pieces of sandpaper: one fixed and the other spun using a 710 W hand drill. The variables evaluated were: (a) germination percentage (over time since imbibition and the final percentage), (b) mean time to germination, and (c) number of days before the start of germination. The mechanical scarification treatment improved all germination variables compared to the other treatments. In the mechanical scarification treatment, germination percentage was 60.7%; mean time to germination was 6.32 days, and the number of days before the start of germination was 2 days. Our results indicate that mechanical scarification is an appropriate technique for propagation of L. divaricata Cav. for large scale restoration, since many seeds can be treated quickly and this technique is easily replicable.
英文关键词	Desertification Nursery garden Out-planting Pre-germinative treatment Scarification
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000533505000005
WOS关键词	SEED-GERMINATION ; GRASSES
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324466
作者单位	[Ariel Hernandez, Jorge; Roberto Perez, Daniel] Univ Nacl Comahue, Lab Rehabil & Restaurac Ecolog Ecosistemas Aridos, Neuquen, Neuquen, Argentina; [Alberto Busso, Carlos] Univ Nacl Sur, CONICET, Consejo Nacl Invest Cient & Tecn Republ Argentina, Dept Agron,CERZOS, San Andres 800, RA-8000 Bahia Blanca, Buenos Aires, Argentina
推荐引用方式 GB/T 7714	Ariel Hernandez, Jorge,Roberto Perez, Daniel,Alberto Busso, Carlos. Germination of Larrea divaricata Cav, an important shrub species to restore desertified arid ecosystems[J],2020,179.
APA	Ariel Hernandez, Jorge,Roberto Perez, Daniel,&Alberto Busso, Carlos.(2020).Germination of Larrea divaricata Cav, an important shrub species to restore desertified arid ecosystems.JOURNAL OF ARID ENVIRONMENTS,179.
MLA	Ariel Hernandez, Jorge,et al."Germination of Larrea divaricata Cav, an important shrub species to restore desertified arid ecosystems".JOURNAL OF ARID ENVIRONMENTS 179(2020).