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与低湿(45%RH)贮存对比,高湿(75%RH)贮存的民竹粘5号种子含水量增加,发芽率和萌发指数几乎降至零。淀粉、总糖和非还原糖含量基本不变,但还原糖含量增加.直链淀粉和热水溶直链淀粉含量增加。但非热水溶直链淀粉含量下降,与桂朝2号相反,清蛋白基本不变,球蛋白、醇溶谷蛋白、游离氨基酸含量下降,而赖氨酸,谷蛋白和总贮存蛋白含量增加。四种溶性蛋白也从4∶10∶5∶81变为4∶9∶3∶84.脂肪酸含量和脂肪酶活性增加. 总淀粉酶和α—淀粉酶活性下降,而β—淀粉酶活性下降,与桂朝2号相反。与桂朝2号相比,高湿对民竹粘5号的作用有些特别,有待进一步研究。种子是一活体,在贮存中必然经历着各种各样的变化,往往引起品质下降。水稻种子贮存中品质的劣变问题,虽然已有一些报道,但对优质稻的研究却不多。随着人民生活水平提高,人们对稻米品质的要求也逐渐提高。对于优质稻的贮存,以及贮存中生理生化变化的了解,都是受到大家关心的问题.本文试图用民竹粘5号作为优质稻材料,对比非优质稻桂朝2号在贮存中种子的变化,探求如何做好优质稻的贮存工作。
Compared with the storage at low humidity (45% RH), the moisture content of Bumian No.5 seed stored in high humidity (75% RH) increased and the germination rate and germination index almost dropped to zero. The content of starch, total sugar and non-reducing sugar remained unchanged, but the content of reducing sugar increased, while the content of amylose and hot water-soluble amylose increased. However, the content of non-hot water-soluble amylose was decreased. In contrast to Guichao No.2, the albumin remained unchanged, the contents of globulin, prolamin and free amino acids decreased, while the content of lysine, gluten and total storage protein increased. Four soluble proteins also changed from 4:10:5:81 to 4: 9: 3: 84. Fatty acid content and lipase activity increased, total amylase and alpha-amylase activity decreased, and beta-amylase activity decreased, The opposite of Gui Chao 2. Compared with the No. 2 Guizhao, the effect of high humidity on the Mudoujian No. 5 is somewhat special and awaits further study. The seed is a living body, which inevitably undergoes a variety of changes in storage, often resulting in a decline in quality. Although there have been some reports on the quality deterioration of rice seed storage, there are not many studies on the quality rice. With the improvement of people’s living standards, people’s requirements for the quality of rice have been gradually raised. The research on the storage of high-quality rice and its physiological and biochemical changes during storage are all issues of concern to everyone.This paper attempts to use Shizhu No.5 as a good-quality rice material to compare the changes of non-high quality rice seeds during storage , To explore how to do a good job of quality rice storage.