
水稻超干种子耐热性与应用探究
Study on Heat Resistance of Rice Super-dry Seeds and it's Application
叶世青 . 水稻超干种子耐热性与应用探究[J]. 中国稻米, 2019 , 25(2) : 10 -15 . DOI: 10.3969/j.issn.1006-8082.2019.02.003
The drying method of super dry seeds of rice was selected and the high temperature resistance of seeds was tested in this paper, and the effects of storage resistance,the elimination of seed dormancy and the destruction of seed borne diseases were explored. The results showed that the safe and effective drying method for super dry seeds was two-stage method with low temperature(45℃) first and high temperature(65℃~75℃) later, the dry heat resistance of seeds from strong to weak was super dry seed> dry seed > fresh seed > wet seed > white seed. Under the seal storage condition, the super dry seeds could be stored for a long time and the seed germination rate could not be reduced. According to the characteristics of heat resistance of super dry seeds, the method of high temperature and dry heat could be used to break the seed dormancy and kill the transmission of diseases and insect pests with remarkable effect.
Key words: rice; super dry seeds; high temperature; germination rate; pests; dormancy; seed borne disease
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