Evaluation of ultrasound technology to break seed dormancy of common lambsquarters (Chenopodium album)

A - Papers appearing in refereed journals

Babaei-Ghaghelestany, A., Taghi Alebrahim, M., Macgregor, D., Assieh Khatami, S and Farzaneh, R. H. N 2020. Evaluation of ultrasound technology to break seed dormancy of common lambsquarters (Chenopodium album). Food Science and Nutrition.

AuthorsBabaei-Ghaghelestany, A., Taghi Alebrahim, M., Macgregor, D., Assieh Khatami, S and Farzaneh, R. H. N
Abstract

Although seed dormancy is advantageous for annual plants in the wild, unsynchronized germination in the laboratory leads to increased error in measurements. Therefore techniques to promote and synchronize germination are routinely used. Ultrasound is one of the newest methods for breaking dormancy in weed seeds. We have investigated whether ultrasonic waves can be used to break seed dormancy of common lambsquarters (Chenopodium album), a highly competitive annual weed that leads to significant reduction of yields of corn, soybeans, and sugar beets. Ultrasonic waves with frequency of 35kH were applied for 0 (control), 5, 10, 15 and 30 minutes using a completely randomized design. The results showed that the use of ultrasound waves generally enhanced the traits under investigation in the treated samples compared to the control sample. The maximum enhancement of germination percentage (180%), seedling dry weight (78%), and seedling vigor index I (271%) and II (392%) was seen in the common lambsquarters samples treated with ultrasound for 15 minutes and seedling length (40%) at 30 minutes compared to the control samples. Radical lengths were not statistically different from controls under any treatment and plumule length only increased marginally. These changes are reflected in seedling vigor index I and II measurements. For some of these traits, increasing the length of ultrasound treatment to 30 minutes had negative effects. These results demonstrate that ultrasound technology can be used as a quick, and efficient non-destructive method to break seed dormancy in common lambsquarters.

KeywordsCommon lambsquarters; Seed dormancy; Ultrasound technology; Germination percentage
Year of Publication2020
JournalFood Science and Nutrition
Digital Object Identifier (DOI)doi:10.1002/fsn3.1547
Web address (URL)https://onlinelibrary.wiley.com/doi/full/10.1002/fsn3.1547
Publisher's version
Accepted author manuscript
Output statusPublished
Publication dates
Online15 May 2020
Publication process dates
Accepted29 Feb 2020
PublisherWiley Periodicals, Inc
ISSN2048-7177

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