Effect of seed dressing with gibberellins and brassinosteroids on enzymatic activity and seed quality of soya bean at different vigour levels under low temperature

IF 1.7 4区 农林科学 Q2 AGRONOMY
Kantima Thongsri, Kanokwan Teingtham, J. Duangpatra, Jutamas Romkaew
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Abstract

Gibberellin (GA3) and brassinosteroid (EBL) interactions can stimulate germination, extend seedling growth and induce low temperature stress tolerance. The effects of GA3 and EBL on seed quality, α-amylase and total dehydro­genase activities of soya bean seeds at different vigour and temperature levels were studied. The results showed that medium vigour seeds dressed with 100 ppm GA3, 0.25 ppm EBL plus 50 ppm GA3, and 0.50 ppm EBL plus 100 ppm GA3 had significantly higher germination (GP) and seedling vigour rates (SVR) than those of untreated seeds. Similarly, 0.50 ppm EBL resulted in higher SVR of low and medium vigour seeds when compared to the control under low temperature. All soya bean seeds dressed with 100 ppm GA3 had higher GP, vigour, shoot and root lengths, and SVR under both temperatures than those of the untreated seeds, and mean germination time decreased. At 15°C, all seeds dressed with 0.50 ppm EBL plus 100 ppm GA3 had higher α-amylase activity than the untreated seeds, whereas seeds with low and medium seed vigour dressed with 100 ppm GA3 and 0.25 ppm EBL plus 50 ppm GA3 had higher total dehydrogenase activity than the untreated seeds.
低温条件下赤霉素和油菜素内酯对不同活力水平大豆酶活性和种子品质的影响
赤霉素(GA3)与油菜素内酯(EBL)相互作用能促进幼苗萌发,延长幼苗生长,诱导幼苗耐低温胁迫。研究了不同活力和温度水平下GA3和EBL对大豆种子品质、α-淀粉酶和总脱氢酶活性的影响。结果表明:100 ppm GA3、0.25 ppm EBL + 50 ppm GA3、0.50 ppm EBL + 100 ppm GA3处理的中速种子萌发率和幼苗活力率显著高于未处理的种子。同样,在低温条件下,0.50 ppm EBL处理下,中低龄种子的SVR高于对照。经100 ppm GA3处理的大豆种子在两种温度下的GP、活力、茎长和根长以及SVR均高于未处理的种子,平均发芽时间缩短。15℃时,0.50 ppm EBL + 100 ppm GA3处理的种子α-淀粉酶活性均高于未处理的种子,而100 ppm GA3和0.25 ppm EBL + 50 ppm GA3处理的低、中种子活力的种子总脱氢酶活性均高于未处理的种子。
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来源期刊
Seed Science and Technology
Seed Science and Technology 农林科学-农艺学
CiteScore
3.00
自引率
28.60%
发文量
36
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.
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