Seed bank persistence and germination of chinee apple (Ziziphus mauritiana Lam.)

Bebawi, Faiz F., Campbell, Shane D. and Mayer, Robert J. (2016) Seed bank persistence and germination of chinee apple (Ziziphus mauritiana Lam.). Rangeland Journal, 38 1: 17-25. doi:10.1071/RJ15104


Author Bebawi, Faiz F.
Campbell, Shane D.
Mayer, Robert J.
Title Seed bank persistence and germination of chinee apple (Ziziphus mauritiana Lam.)
Formatted title
Seed bank persistence and germination of chinee apple (Ziziphus mauritiana Lam.)
Journal name Rangeland Journal   Check publisher's open access policy
ISSN 1036-9872
1834-7541
Publication date 2016-02-17
Year available 2016
Sub-type Article (original research)
DOI 10.1071/RJ15104
Open Access Status Not yet assessed
Volume 38
Issue 1
Start page 17
End page 25
Total pages 9
Place of publication Clayton, VIC, Australia
Publisher C S I R O Publishing
Language eng
Formatted abstract
Chinee apple (Ziziphus mauritiana Lam.) is a thorny tree that is invading tropical woodlands of northern Australia. The present study reports three experiments related to the seed dynamics of chinee apple. Experiment 1 and 2 investigated persistence of seed lots under different soil types (clay and river loam), levels of pasture cover (present or absent) and burial depths (0, 2.5, 10 and 20 cm). Experiment 3 determined the germination response of chinee apple seeds to a range of alternating day/night temperatures (11/6 degrees C up to 52/40 degrees C). In the longevity experiments (Expts 1 and 2), burial depth, soil type and burial duration significantly affected viability. Burial depth had the greatest influence, with surface located seeds generally persisting for longer than those buried below ground. Even so, no viable seeds remained after 18 and 24 months in the first and second experiment, respectively. In Expt 3 seeds of chinee apple germinated under a wide range of alternating day/night temperatures ranging from 16/12 degrees C to 47/36 degrees C. Optimal germination (77%) occurred at 33/27 degrees C and no seeds germinated at either of the lowest (11/6 degrees C) or highest (52/40 degrees C) temperature regimes tested. These findings indicated that chinee apple has the potential to expand its current distribution to cooler areas of Australia. Control practices need to be undertaken for at least two years to exhaust the seed bank.
Keyword Burial depth
Germination requirements
Indian jujube
Seed longevity
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Agriculture and Food Sciences
 
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Created: Fri, 04 May 2018, 16:23:26 EST by Shane Campbell on behalf of Learning and Research Services (UQ Library)