南京大学学报(自然科学版) ›› 2024, Vol. 60 ›› Issue (1): 168180.doi: 10.13232/j.cnki.jnju.2024.01.017
• • 上一篇
Zeyan Zhou1, Shubin Zong3, Haixia Tan2, Xingjun Tian1()
摘要:
明日叶(Angelica keiskei)是一种经济价值极高、开发前景广阔的食药两用蔬菜.然而由于土壤及温湿度条件等因素限制,明日叶种子出苗率低,制约明日叶的栽培生产.以山东新产的绿茎明日叶种子为材料,通过不同水温浸种及不同浓度KNO3、植物激素、强氧化剂的外源添加,研究了提高种子的萌发处理方法.结果表明,温水(55 ℃)浸种、KNO3溶液、植物激素、强氧化剂处理均可不同程度地促进种子萌发.与清水浸种相比,在KNO3溶液处理组中,750 mg·L-1处理的发芽率和发芽势分别为83.82%和59.56% (p<0.05),为组内最高;在植物激素处理组中,100 mg·L-1 GA3溶液处理发芽率最高,达到81.19% (p<0.05);在强氧化剂处理组中,500 mg·L-1 KMnO4溶液处理的发芽率和发芽势分别为84.92%和46.03% (p<0.05),为组内最高.在这三种外源添加处理条件下,750 mg·L-1KNO3溶液处理的幼苗下胚轴长1.08 cm,根长2.09 cm;100 mg·L-1 GA3溶液处理的幼苗下胚轴长2.41 cm,根长2.01 cm;500 mg·L-1 KMnO4溶液处理的幼苗下胚轴长度1.21 cm,根长1.63 cm.综合比较发现,100 mg·L-1 GA3溶液处理条件下明日叶种子发芽率高,且植株幼苗的根长及下胚轴长度也最好.本研究结果可为明日叶种植及同类种子繁育提供借鉴.
中图分类号:
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