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On-line Access: 2020-10-12

Received: 2020-06-03

Revision Accepted: 2020-07-12

Crosschecked: 2020-09-09

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Dong-dong Cao


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Journal of Zhejiang University SCIENCE B 2020 Vol.21 No.10 P.796-810


Drying temperature affects rice seed vigor via gibberellin, abscisic acid, and antioxidant enzyme metabolism

Author(s):  Yu-tao Huang, Wei Wu, Wen-xiong Zou, Hua-ping Wu, Dong-dong Cao

Affiliation(s):  Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; more

Corresponding email(s):   jellycao@163.com

Key Words:  Drying temperature, Rice, Seed vigor, Gibberellin acid (GA), Abscisic acid (ABA), Antioxidant enzyme

Yu-tao Huang, Wei Wu, Wen-xiong Zou, Hua-ping Wu, Dong-dong Cao. Drying temperature affects rice seed vigor via gibberellin, abscisic acid, and antioxidant enzyme metabolism[J]. Journal of Zhejiang University Science B, 2020, 21(10): 796-810.

@article{title="Drying temperature affects rice seed vigor via gibberellin, abscisic acid, and antioxidant enzyme metabolism",
author="Yu-tao Huang, Wei Wu, Wen-xiong Zou, Hua-ping Wu, Dong-dong Cao",
journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Drying temperature affects rice seed vigor via gibberellin, abscisic acid, and antioxidant enzyme metabolism
%A Yu-tao Huang
%A Wei Wu
%A Wen-xiong Zou
%A Hua-ping Wu
%A Dong-dong Cao
%J Journal of Zhejiang University SCIENCE B
%V 21
%N 10
%P 796-810
%@ 1673-1581
%D 2020
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B2000297

T1 - Drying temperature affects rice seed vigor via gibberellin, abscisic acid, and antioxidant enzyme metabolism
A1 - Yu-tao Huang
A1 - Wei Wu
A1 - Wen-xiong Zou
A1 - Hua-ping Wu
A1 - Dong-dong Cao
J0 - Journal of Zhejiang University Science B
VL - 21
IS - 10
SP - 796
EP - 810
%@ 1673-1581
Y1 - 2020
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.B2000297

seed vigor is a key factor affecting seed quality. The mechanical drying process exerts a significant influence on rice seed vigor. The initial moisture content (IMC) and drying temperature are considered the main factors affecting rice seed vigor through mechanical drying. This study aimed to determine the optimum drying temperature for rice seeds according to the IMC, and elucidate the mechanisms mediating the effects of drying temperature and IMC on seed vigor. rice seeds with three different IMCs (20%, 25%, and 30%) were dried to the target moisture content (14%) at four different drying temperatures. The results showed that the drying temperature and IMC had significant effects on the drying performance and vigor of the rice seeds. The upper limits of drying temperature for rice seeds with 20%, 25%, and 30% IMCs were 45, 42, and 38 °C, respectively. The drying rate and seed temperature increased significantly with increasing drying temperature. The drying temperature, drying rate, and seed temperature showed extremely significant negative correlations with germination energy (GE), germination rate, germination index (GI), and vigor index (VI). A high IMC and drying temperature probably induced a massive accumulation of hydrogen peroxide (H2O2) and superoxide anions in the seeds, enhanced superoxide dismutase (SOD) and catalase (CAT) activity, and increased the abscisic acid (ABA) content. In the early stage of seed germination, the IMC and drying temperature regulated seed germination through the metabolism of H2O2, gibberellin acid (GA), ABA, and α-amylase. These results indicate that the metabolism of reactive oxygen species (ROS), antioxidant enzymes, GA, ABA, and α-amylase might be involved in the mediation of the effects of drying temperature on seed vigor. The results of this study provide a theoretical basis and technical guidance for the mechanical drying of rice seeds.


结论:初始含水量为20%、25%与30%的水稻种子的适宜干燥温度分别为45、42与38 °C.较高的干燥温度显著降低了水稻种子的活力.种子干燥过程与萌发初期水稻种子内部活性氧、抗氧化酶、赤霉素、脱落酸和α-淀粉酶的代谢可能与干燥温度调控水稻种子活力的机制密切相关.


Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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[54]List of electronic supplementary materials

[55]Table S1 Effects of drying temperature on seed germination energy (GE), germination percentage (GP), germination index (GI) and vigor index (VI) of rice stored for 10 months

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