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Varietal Difference in Enzyme Activities during Preharvest Germination of Rice  

Ko Jong-Cheol (Honam Agricultural Research Institute, NICS, RDA)
Kim Bo-kyeong (Honam Agricultural Research Institute, NICS, RDA)
Lee Kyu-Seong (Rural Development Administration)
Choi Weon-Young (Honam Agricultural Research Institute, NICS, RDA)
Choi Heh-Ran (Division of Biological Resources Sciences, Chonbuk Nat'l Univ.)
Cho Eun-Ae (Division of Biological Resources Sciences, Chonbuk Nat'l Univ.)
Yu Song-Joong (Division of Biological Resources Sciences, Chonbuk Nat'l Univ.)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.50, no.6, 2005 , pp. 378-383 More about this Journal
Abstract
This study was conducted in order to exam­ine relationships between the viviparous germination ability and the antioxidative system in rice seeds and seedlings. Enzyme activities was compared among the four varieties with different viviparous germination ability from the early or mid-late maturity group. $\alpha$-Amylase activities correlated with the viviparous germination rate (VGRs) and $\alpha$-amylase activity in seeds of 40 days after heading (DAH) was highest in Dongjinbyeo among mid­late maturing varieties (MLMVs) and in Daeseongbyeo among EMVs. $\alpha$-Amylase activity in dry mature seeds was also higher in varieties with higher VGR. Glucose contents in viviparously germinating seeds and mature dry, seeds were higher in varieties with higher VGRs. Cat-alase activities did not correlate with the VGRs in both maturity groups. However, peroxidase activities in viviparously germinating seeds were higher in varieties with higher VGRs.
Keywords
Viviparous germination; enzymes; null; null; Catalase; peroxidase;
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