發(fā)布時(shí)間：2021-04-13 16:21

　　目的:本研究旨在根據(jù)種子初始含水量確定水稻種子的最佳干燥溫度,并闡明干燥溫度和種子初始水分影響水稻種子干燥后種子活力的機(jī)制。創(chuàng)新點(diǎn):根據(jù)不同初始水分的水稻種子,設(shè)置了不同梯度的干燥溫度,系統(tǒng)地研究了干燥溫度和種子初始水分對(duì)種子機(jī)械干燥過(guò)程與種子活力的影響,并得到了不同初始水分的適宜干燥溫度。方法:在不同天氣,分別收獲初始含水量為20%、25%與30%的水稻種子樣品,并分別設(shè)置4個(gè)溫度梯度的干燥溫度。采用三九遠(yuǎn)紅外線干燥機(jī)（NP-120e）干燥水稻種子,對(duì)干燥后的水稻種子進(jìn)行標(biāo)準(zhǔn)發(fā)芽試驗(yàn),并測(cè)定相關(guān)生理生化指標(biāo),并進(jìn)行相關(guān)性分析。結(jié)論:初始含水量為20%、25%與30%的水稻種子的適宜干燥溫度分別為45、42與38°C。較高的干燥溫度顯著降低了水稻種子的活力。種子干燥過(guò)程與萌發(fā)初期水稻種子內(nèi)部活性氧、抗氧化酶、赤霉素、脫落酸和α-淀粉酶的代謝可能與干燥溫度調(diào)控水稻種子活力的機(jī)制密切相關(guān)。 

【文章來(lái)源】：Journal of Zhejiang University-Science B（Biomedicine & Biotechnology）. 2020,21(10)SCICSCD

【文章頁(yè)數(shù)】：16 頁(yè)

【文章目錄】：
1 Introduction
2 Materials and methods
    2.1 Materials
    2.2 Drying experiment
    2.3 Determination of seed germination and seed-ling characteristics
    2.4 H2O2,O2·-,and MDA analysis
    2.5 Antioxidant enzymes
    2.6 Amylase activity
    2.7 GA and ABA content analyses
    2.8 Statistical analysis
3 Results
    3.1 Effect of drying temperature on the drying process
    3.2 Effects of drying temperature on seed germination
    3.3 Correlations between drying parameters and seed GIs
    3.4 Effects of drying temperature on activity of
    3.5 Effects of drying temperature on GA and ABA contents during drying and early germination
    3.6 Effects of drying temperature onα-amylase andβ-amylase activity during drying and early germination
4 Discussion
5 Conclusions
Contributors
Compliance with ethics guidelines
List of electronic supplementary materials


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期刊論文
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本文編號(hào)：3135628