不同温度下油菜素内酯和赤霉素对大豆种子水分吸收和生产性能的影响

IF 1.7 4区农林科学 Q2 AGRONOMY

Seed Science and Technology Pub Date : 2021-08-31 DOI:10.15258/sst.2021.49.2.06

Kantima Thongsri, Kanokwan Teingtham, J. Duangpatra, J. Romkaew

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引用次数: 0

摘要

低温对大豆种子性能和幼苗生长有不利影响，减少了林分建立。假设植物激素处理种子可以改善种子的吸胀和低温性能。为此，研究了24-表油菜素内酯(EBL)和赤霉素酸(GA3)对大豆种子萌发的影响。‘CM60’和‘CM0701-24’的种子分别用0.25或0.50 ppm EBL、50或100 ppm GA3或蒸馏水在10、15、20和25°C下吸干。两个大豆品种的种子吸胀模式具有相似的趋势。与高温相比，低温延迟了种子的吸胀，使种子到达第1和第2阶段的时间更长。50和100 ppm GA3处理的大豆种子萌发指数、芽长和根长均有所提高，平均萌发时间有所缩短。因此，50 ~ 100 ppm GA3可以作为预浸种子处理，提高大豆种子和幼苗的低温性能。

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Effects of brassinosteroids and gibberellin on water uptake and performance of soya bean seeds under different temperatures

Low temperature has negative effects on seed performance and seedling growth in soya bean, reducing stand establishment. It was hypothesised, that seed treatment with plant hormones could improve seed imbibition and performance at low temperature. Therefore, the effects of 24-epibrassinolide (EBL) and gibberellic acid (GA3) on soya bean seed germination were studied. Seeds of 'CM60' and 'CM0701-24' were imbibed with 0.25 or 0.50 ppm EBL, 50 or 100 ppm GA3, or distilled water at 10, 15, 20 and 25°C. The seed imbibition patterns of the two soya bean varieties followed a similar trend. Low temperature delayed seed imbibition resulting in longer time to reach the end of phases 1 and 2 of seed germination as compared with high temperature. Soya bean seeds treated with 50 or 100 ppm GA3 showed increased germination index, shoot and root length and reduced mean germination time. Thus, 50-100 ppm GA3 could be used as a pre-soaking seed treatment to improve soya bean seed and seedling performance under low temperature.

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来源期刊

Seed Science and Technology 农林科学-农艺学

CiteScore

3.00

自引率

28.60%

发文量

审稿时长

>36 weeks

期刊介绍： Seed Science and Technology (SST) is an international journal featuring original papers and articles on seed quality and physiology related to seed production, harvest, processing, sampling, storage, genetic conservation, habitat regeneration, distribution and testing. A journal that meets the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality. Published every April, August and December.