African mustard (Brassica tournefortii) germination in southern Australia

Chauhan, Bhagirath S., Gill, Gurjeet and Preston, Christopher (2006) African mustard (Brassica tournefortii) germination in southern Australia. Weed Science, 54 5: 891-897. doi:10.1614/WS-06-053R.1

Author Chauhan, Bhagirath S.
Gill, Gurjeet
Preston, Christopher
Title African mustard (Brassica tournefortii) germination in southern Australia
Formatted title
African mustard (Brassica tournefortii) germination in southern Australia
Journal name Weed Science   Check publisher's open access policy
ISSN 0043-1745
Publication date 2006-09
Sub-type Article (original research)
DOI 10.1614/WS-06-053R.1
Open Access Status Not yet assessed
Volume 54
Issue 5
Start page 891
End page 897
Total pages 7
Place of publication Lawrence, KS, United States
Publisher Weed Science Society of America
Language eng
Abstract Germination of African mustard seeds collected from southern Australia was not influenced by light conditions at the optimum temperature of 20/12 C. However, seed germination was inhibited by light at the lower temperature (15/9 C). Presence of light increased the sensitivity of seeds to low temperature, as well as salt and osmotic stress. In dark conditions, seed germination was relatively unaffected at a low level of salinity (80 mM NaCl) but decreased even at 10 mM NaCl in light/dark conditions. In the dark, seed germination was unaffected up to an osmotic potential of -0.6 MPa but declined thereafter. Seeds of African mustard germinated over a broad range of pH from 4 to 10. Seed germination was stimulated by potassium nitrate (from 0.005 to 0.04 M) and gibberellic acid (0.001 M). Seedling emergence of African mustard was the greatest (51%) for seeds buried at 1 cm but no seedlings emerged from seeds placed at a depth of 5 cm. At the end of the growing season, seed decay (77 to 87%) and dormant (12 to 18%) components were similar among different seed burial depths. Information gained in this study will be important in developing a better understanding of the requirements for African mustard germination and emergence.
Keyword Emergence
Osmotic potential
Salt stress
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 28 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 24 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Thu, 10 Jul 2014, 11:57:11 EST by System User on behalf of Learning and Research Services (UQ Library)