当前位置: 首页 > 文章 > 植物生长调节剂和盐度对驼绒藜属植物——绵毛优若藜种子发芽功能的影响 畜牧与饲料科学 2012,33 (2) 151-156
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植物生长调节剂和盐度对驼绒藜属植物——绵毛优若藜种子发芽功能的影响

作  者:
常虹
单  位:
中国科学院内蒙古草业中心
关键词:
绵毛优若藜;赤霉酸;乙烯利;壳梭孢(菌)素;盐生植物;激动素
摘  要:
绵毛优若藜[Ceratoides lanata(Pursh)J.T.Howell]是一种灌木,具有一年生小枝,属于藜科,广泛分布于美国犹他州北部盐碱沙地。其种子没有休眠性,大约90%的种子在非盐碱土条件下发芽。其种子发芽率随盐度的增高而下降,超过10%的种子在900mmol/L氯化钠中可以发芽,且几乎所有的种子在不到24h内发芽,超出这个时间段后不再有种子发芽。赤霉酸不能缓解盐度对绵毛优若藜种子发芽产生的影响,而激动素和壳梭孢(菌)素可以大大减轻盐分对其发芽的影响,乙烯利能够完全缓解盐胁迫对绵毛优若藜种子发芽的影响。
译  名:
Action of Plant Growth Regulators and Salinity on Seed Germination of Ceratoides lanata
作  者:
CHANG Hong 1,2 (1.Inner Mongolia Prataculture Research Center,Chinese Academy of Sciences,Hohhot 010031,China;2.Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China)
关键词:
Ceratoides lanata;gibberellic acid;ethephon;fusicoccin;halophytes;kinetin
摘  要:
Ceratoides lanata (Pursh) J. T. Howell is a shrub with numerous annual branchlets from the Chenopodiaceae family and is widely distributed in brackish water playas of northern Utah. Seeds had no dormancy,and about 90% of the seeds germinated in nonsaline control. Seed germination decreased with the increase in salinity,and more than 10% of the seeds germinated at 900 mmol/L NaCl.Almost all seeds germinated in less than 24 h,and no additional seed germinated after this time. Gibberellic acid had no effect in alleviating salinity effects;however, kinetin and fusicoccin substantially alleviated the effect of salinity on germination,while ethephon almost completely reverted the effect of salinity.

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