Arid
DOI10.1007/s11258-018-0820-8
Seed germinability and longevity influences regeneration of Acacia gerrardii
Suleiman, Majda K.1; Dixon, Kingsley2; Commander, Lucy3; Nevill, Paul4; Bhat, Narayana R.1; Islam, M. Anisul1; Jacob, Sheena1; Thomas, Rini1
通讯作者Suleiman, Majda K.
来源期刊PLANT ECOLOGY
ISSN1385-0237
EISSN1573-5052
出版年2018
卷号219期号:5页码:591-609
英文摘要

Acacia gerrardii is the only native tree species of the Kuwaiti desert ecosystem. However, anthropogenic disturbances and harsh arid climate have contributed towards the disappearance of this keystone species from its habitat. In this study, effects of different seed pretreatments to break dormancy, water entry pathway, and ecology (seasonal timing) of dormancy loss and germination of A. gerrardii were investigated. Effects of mechanical scarification, hot water treatment (30 s, 1, 2, and 5 min), and concentrated acid scarification (10, 20, and 30 min) on germination percentage and rate (time to 50% germination and final germination) were also examined. Pretreatment with mechanical scarification produced the highest germination in the least time and 20 A degrees C, 40% RH with 12 h of light (2370 Lux) were found to provide the best germination environment. Seeds were rapidly aged at 60% RH and 45 or 50 A degrees C to determine longevity, and the results were analyzed using probit analysis. Times taken for viability of A. gerrardii seeds aged at 45 and 50 A degrees C to fall to 50% (p (50)) were 38.6 and 9.3 days, respectively, and therefore the seeds can be considered to have medium longevity. Experiments to find the water entry pathway in A. gerrardii indicated that the micropyle region was the primary point of water entry into the seed. Seed burial experiments indicated that though seed retention decreased over time, there was no significant decrease in number of viable seeds after 31 weeks. The findings of this study are important to nursery managers, seed banks, and those involved in conservation and restoration activities.


英文关键词Acacia gerrardii Dormancy Germination Longevity Restoration Seed burial Water entry path way
类型Article
语种英语
国家Kuwait ; Australia
收录类别SCI-E
WOS记录号WOS:000429362800010
WOS关键词PHYSICAL DORMANCY ; WATER-GAP ; GERMINATION ; LEGUMINOSAE ; BANK ; LENS ; PAPILIONOIDEAE ; CLASSIFICATION ; IDENTIFICATION ; SAPINDACEAE
WOS类目Plant Sciences ; Ecology ; Forestry
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology ; Forestry
来源机构University of Western Australia
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212190
作者单位1.Kuwait Inst Sci Res, Environm & Life Sci Res Ctr, Desert Agr & Ecosyst Program, POB 24885, Safat 13109, Kuwait;
2.Curtin Univ, ARC Ctr Mine Site Restorat, Dept Environm & Agr, Bentley, WA, Australia;
3.Univ Western Australia, Sch Biol Sci, 35 Stirling Highway, Crawley, WA 6009, Australia;
4.Curtin Univ, Dept Environm & Agr, Bentley, WA, Australia
推荐引用方式
GB/T 7714
Suleiman, Majda K.,Dixon, Kingsley,Commander, Lucy,et al. Seed germinability and longevity influences regeneration of Acacia gerrardii[J]. University of Western Australia,2018,219(5):591-609.
APA Suleiman, Majda K..,Dixon, Kingsley.,Commander, Lucy.,Nevill, Paul.,Bhat, Narayana R..,...&Thomas, Rini.(2018).Seed germinability and longevity influences regeneration of Acacia gerrardii.PLANT ECOLOGY,219(5),591-609.
MLA Suleiman, Majda K.,et al."Seed germinability and longevity influences regeneration of Acacia gerrardii".PLANT ECOLOGY 219.5(2018):591-609.
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