Study on seed vigor and physiological changes of rice （Oryza sativa L.） under critical stress storage conditions

doi:10.14088/j.cnki.issn0439-8114.2019.13.021

Abstract

Abstract: In order to explore the changes of rice seed vigor under different storage conditions, the vitality and physiological characteristics of rice seeds under critical stress storage conditions were systematically studied in order to analyze the physiological and biochemical mechanism of rice seed storage. In this study, the indica and fertilization of seeds were studied under different storage conditions （4 ℃,-10 ℃, and -20 ℃） and different water contents during storage. Physiological and biochemical characteristics of the law. The results showed that seed vigor indexes such as germination index, vigor index, and storage time had no obvious linear relationship, while soluble protein, malondialdehyde content and storage time were linearly related; among them, protein content was negatively correlated with time, and malondialdehyde was vice versa. The temperature and moisture content of seeds during storage have a great correlation with the seed vigor. When the temperature is constant, the germination index increases with the decrease of the seed moisture content. Soluble protein was significantly destroyed at the ultra-low temperature and high water content, and the content was the lowest. At different storage temperatures, the malondialdehyde content increased with decreasing water content. This study provides a theoretical reference for the safe storage of rice seeds and the selection of the optimum storage conditions under the premise of taking into account the cost.

Key words: rice, critical storage conditions, seed physiology, seed vitality

CLC Number:

S351.1

JIANG Wei, LI Yao, LI Na, ZHAO Fei, QI Na, CAI Zhuo, CAO Gao-yi, HUA Ze-tian. Study on seed vigor and physiological changes of rice （Oryza sativa L.） under critical stress storage conditions[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(13): 102-105.

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