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Factors Affecting Seed Germination and Seedling Emergence of Asia Minor Bluegrass (Polypogon fugax)

Published online by Cambridge University Press:  20 January 2017

Xian Wu
Affiliation:
College of Plant Protection, Key Laboratory of Integrated Pest Management on Crops in East China, Nanjing Agricultural University, Ministry of Agriculture, Nanjing 210095, China
Jun Li
Affiliation:
College of Plant Protection, Key Laboratory of Integrated Pest Management on Crops in East China, Nanjing Agricultural University, Ministry of Agriculture, Nanjing 210095, China
Hongle Xu
Affiliation:
College of Plant Protection, Key Laboratory of Integrated Pest Management on Crops in East China, Nanjing Agricultural University, Ministry of Agriculture, Nanjing 210095, China
Liyao Dong*
Affiliation:
College of Plant Protection, Key Laboratory of Integrated Pest Management on Crops in East China, Nanjing Agricultural University, Ministry of Agriculture, Nanjing 210095, China
*
Corresponding author's E-mail: dly@njau.edu.cn

Abstract

Little published information is available related to seed germination and seedling establishment of Asia Minor bluegrass, a problematic grass weed in some regions of China. The objective of this study was to examine the effects of different environmental factors on Asia Minor bluegrass seed germination. The optimum temperature for germination was around 10 to 20 C, and more than 90% of seeds germinated under 20/10 and 25/15 C temperature regimes. Also, light and pH did not appear to have any effect on seed germination. Asia Minor bluegrass was sensitive to osmotic stress, but tolerant of NaCl. No seedlings emerged when seeds were buried 4 cm deep. The result suggested that Asia Minor bluegrass has the potential to spread into a large area in China. To prevent its spreading, measures such as soil cultivation can be used to limit seed germination from increased burial depth and/or nonselective herbicides can be applied to kill early-germinating weed seedlings in late summer.

Type
Weed Biology and Ecology
Copyright
Copyright © Weed Science Society of America 

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