摘要
为促进齿叶风毛菊的人工栽培,以齿叶风毛菊为试验材料,研究不同温度、光照、赤霉素、酸碱度等因子对其种子萌发的影响。结果表明,种子脱离母体时的胚体发育程度高,种子的长度、宽度分别为4.60和1.28 mm,千粒重为1.61 g。齿叶风毛菊种子萌发需要光照,25℃是其最适的萌发温度,过低或过高的温度均会影响种子正常萌发;其种子存在休眠特性,经一定浓度的赤霉素处理后种子发芽率有所提高,并以150 mg·L^(-1)赤霉素溶液处理的种子各项萌发指标最高,发芽率可达50%以上;其酸碱适应范围较广,且对碱性环境的耐受能力更强。因此,齿叶风毛菊种子为光敏感型种子,具有良好的抗酸碱胁迫能力,可利用100~200 mg·L^(-1)的赤霉素处理来提高其种子发芽活力。
In order to promote the artificial cultivation of Saussurea neoserrata Nakai,the effects of different temperature,light,gibberellin,pH and other factors on seed germination were studied in this experiment.The results showed that the embryo body was highly developed when the seed separated from the parent.And the seeds were smaller,with a length of 4.60 mm,a width of 1.28 mm,and a weight of only about 1.61 g.The seeds of the S.neoserrata needed light to germinate,and its most suitable germination rate was 25℃,which too high or too low would hinder its seed germination.The seeds of S.neoserrata had dormancy characteristics.The germination rate of its seeds treated with a certain concentration of Gibberellin was improved and the seeds treated with 150 mg·L^(-1) gibberellin solution had the highest indicators,which could reach more than 50%.The acid-base adaptability of the S.neoserrata seeds was wider,and the tolerance to the alkaline environment was stronger.Therefore,the seeds of S.neoserrata are light sensitive seeds with good resistance to acid and alkali stress,and 100-200 mg·L^(-1) gibberellin can be used to improve their germination vigor.
作者
翁昊宇
陆海博
刘儒宏基
唐昊宇
李琪
孙阎
WENG Hao-yu;LU Hai-bo;LIU Ru-hong-ji;TANG Hao-yu;LI Qi;SUN Yan(Institute of Modern Agriculture and Ecological Environment,Heilongjiang University,Harbin 150080,China)
出处
《黑龙江农业科学》
2022年第7期85-89,共5页
Heilongjiang Agricultural Sciences
基金
黑龙江大学省级大学生创新创业训练计划项目(202110212070)
黑龙江省省属高等学校基本科研业务费项目(2020-KYYWF-1029)
国家中医药管理局全国中药资源普查项目(GZY-KJS-2018-004)。
关键词
齿叶风毛菊
种子萌发
形态
生物学特性
Saussurea neoserrata
seed germination
form
biological properties
