Effects of ultrasonic treatment on rice germination, yield and yield components, of hybrid rice variety Longyou 619, conventional rice varieties Nanyuhongxian and Nanyuheixian, were studied in greenhouse cultivation and field experiments. The 20 kHz and 40 kHz frequency ultrasound were used on rice seed for 30 min, with no ultrasound treatment as the control. The results showed that ultrasonic treatment increased the yield of Longyou 619 and Nanyuhongxian, by 26.2% and 13.7% compared to the control; ultrasonic treatment increased panicles per unit area of Longyou 619 by 12.8% compared with the control, but had no efects on the panicles per unit area of Nanyuhongxian with the control, and increased grain weight of Nanyuhongxian by 10.3% compared with the control, and had no effects on the grain weight of Longyou 619 and on total grains, filled grains per panicle and seed setting rate of Longyou 619 and Nanyuhongxian. The germination rate of Longyou 619 decreased by 8.43 percentage points after ultrasonic treatment, but the other two varieties had no significant changes.
YUAN Jing-Tian-1, YAN Jin-Xuan-2, WANG De-Feng-1, CAO Ming-1, KE Yong-Chun-1*
. Effects of Ultrasound on Seed Germination, Yield and Yield Components of Rice[J]. China Rice, 2014
, 20(2)
: 53
-55
.
DOI: 10.3969/j.issn.1006-8082.2014.02.014
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