西南林业大学学报2025，Vol.45Issue(7)：11-17,7.DOI:10.11929/j.swfu.202406027
不同胁迫处理对青葙种子萌发和幼苗生长的影响
Responses of Seed Germination and Seedling Growth of Celosia argentea to Various Stresses
摘要
Abstract
Utilizing Celosia argentea seeds as the experimental material,a hydroponic culture method was employed to examine the effects of 5 pH levels,5 polyethylene glycol(PEG-6000)levels,and 5 NaCl levels on seed germination and seedling growth.The results indicated that seed could germinate over the range of pH 3 to 5,and the germination percentage and germination potential were between 79％to 81％and 73％to 79％respect-ively,and significantly promoted seed in the early stage of germination.Germination percentage and seed poten-tial decreased with increasing concentration of PEG-6000,the seed germination was significantly inhibited only under high concentration(20％)PEG stress,but the germination percentage was more than 60％.The seed germin-ation was not significantly inhibited under 50 mmol/L NaCl stress,and significantly inhibited under 100-200 mmol/L NaCl stresses.The recovery percentage and dormancy percentage of non-germinated seeds increased significantly with increasing primary stress concentration.After 21 days,the number of accumulative seed ger-mination were between 69％to 84％,high salt stress showed some iron toxic action.Radicle and hypocotyl length of seedling had great ecological plasticity,the relationship between radical length,hypocotyl length and seedling height was a power function allometric scaling relationship,C.argentea adapted to the different environmental stresses by changing morphological traits.关键词
胁迫/青葙/种子萌发/耐受性/异速生长Key words
stress/Celosia argentea/seed germination/tolerance/allometric growth分类
农业科技引用本文复制引用
贾风勤,黎良财,谭丽凤,陈玉宝,宋希娟,李金玲,梁梅华..不同胁迫处理对青葙种子萌发和幼苗生长的影响[J].西南林业大学学报,2025,45(7):11-17,7.基金项目
新疆维吾尔自治区天山青年计划项目(2018Q028)资助 （2018Q028）
广西生态工程职业技术学院人才引进科研专项(GX-STKYZX202307003)资助. （GX-STKYZX202307003）
