首页分享甲醇老化处理对甜菜种子发芽的影响

甲醇老化处理对甜菜种子发芽的影响

来源：花匠小妙招时间：2024-12-05 16:35

摘要：

为了研究甲醇溶液人工老化处理对甜菜种子发芽指标的影响，探究甜菜种子的耐储性和老化机理，为甜菜种子的人工老化研究提供理论依据。本研究以2020年新收获甜菜种TX2020单粒种为实验材料，设置6个不同时间的老化时间(5、10、15、20、25、30 min)，用甲醇老化法处理种子，通过对甜菜种子进行发芽试验，测定它们的发芽势、发芽率、发芽指数、活力指数、胚根胚轴总长以及种子浸出液电导率。结果显示，种子经过老化处理后各发芽指标均有所下降，与对照相比，种子的发芽势、发芽率、发芽指数、活力指数、胚根胚轴总长分别下降了8.8%~31.41%、13.96%~34.23%、2.66%~22.44%、16.63%~36.44%、7.54%~23.06%，而种子的浸出液电导率则出现上升的情况，较对照上升了34.73%~76.19%。研究结果表明，甲醇溶液能够抑制甜菜种子的萌发，随着时间的不同，甲醇溶液处理甜菜种子在发芽指标上的抑制效果也不同。

关键词: 甜菜种子, 甲醇, 种子老化, 发芽指标

Abstract:

The paper aims to study the effect of artificial aging treatment with methanol solution on the germination index of sugar beet seeds, explore the storage resistance and aging mechanism of sugar beet seeds, and provide a theoretical basis for understanding the artificial aging of sugar beet seeds. In this study, TX2020, a newly harvested single seed, was used as experimental material, and 6 aging time (5, 10, 15, 20, 25 and 30 min) were set up. The seeds were treated with methanol aging method, and the germination test was carried out on the seeds. The germination potential, germination rate, germination index, vigor index, total length of radicle and hypocotyl and conductivity of seed extract were determined. The results showed that germination indexes of seeds decreased after aging treatment. Compared with those of the control, the germination potential, germination rate, germination index, vigor index and total length of radicle and hypocotyl were decreased by 8.8%-31.41%, 13.96%-34.23%, 2.66%-22.44%, 16.63%-36.44% and 7.54%-23.06%, respectively, while the conductivity of seed extract was increased compared with that of the control by 34.73%-76.19%. The results showed that methanol solution could inhibit the germination of sugar beet seeds. With different aging time, the inhibition effect of methanol solution on the germination indexes of sugar beet seeds was also different.

Key words: sugar beet, methanol, seed aging, germination index

中图分类号:

S566.3