Factors affecting seed germination of feather fingergrass (Chloris virgata)

Fernando, Nimesha, Humphries, Talia, Florentine, Singarayer K. and Chauhan, Bhagirath S. (2016) Factors affecting seed germination of feather fingergrass (Chloris virgata). Weed Science, 64 4: 605-612. doi:10.1614/WS-D-15-00212.1

Author Fernando, Nimesha
Humphries, Talia
Florentine, Singarayer K.
Chauhan, Bhagirath S.
Title Factors affecting seed germination of feather fingergrass (Chloris virgata)
Formatted title
Factors affecting seed germination of feather fingergrass (Chloris virgata)
Journal name Weed Science   Check publisher's open access policy
ISSN 0043-1745
Publication date 2016-10-01
Sub-type Article (original research)
DOI 10.1614/WS-D-15-00212.1
Open Access Status Not yet assessed
Volume 64
Issue 4
Start page 605
End page 612
Total pages 8
Place of publication Lawrence, KS, United States
Publisher Weed Science Society of America
Language eng
Abstract Laboratory experiments were carried out to determine the effect of several environmental factors on seed germination of feather fingergrass, one of the most significant emerging weeds in warm regions of the world. Seed germination occurred over a broad range of temperatures (17/7, 25/10, and 30/20 C), but germination being highest at alternating temperatures of 30/20 C under both 12 h light/12 h dark and 24 h dark conditions. Although seed germination was favored by light, some seeds were capable of germinating in the dark. Increasing salt stress decreased seed germination until complete inhibition was reached at 250-mM sodium chloride. Germination decreased from 64 to 0.7% as osmotic potential decreased from 0 to -0.4 MPa, and was completely inhibited at -0.6 MPa. Higher seed germination (>73%) was observed in the range of pH 6.4 to 8 than the other tested pH levels. Heat shock had a significant effect on seed germination. Germination of seeds placed at 130 C for 5 min was completely inhibited for both dry and presoaked seeds. The results of this study will help to develop protocols for managing feather fingergrass, and to thus avoid its establishment as a troublesome weed in economically important cropping regions.
Keyword Germination
Management protocols
Osmotic potential
Salt stress
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Queensland Alliance for Agriculture and Food Innovation
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