摘要
以芦笋‘Applo’为试材,在河北保定研究了低温对其萌芽及内源激素含量变化的影响。结果表明:自然条件下,芦笋在10月30日保温,仍可迅速萌芽生长;但11月14日和11月29日保温,萌芽数和采笋数显著减少;而在12月14日或之后保温,萌芽数与10月30日保温无显著差异,采笋数显著多于10月30日保温。说明芦笋在低温作用下一旦进入休眠阶段,需要满足一定的低温积累量,才能在保温后恢复正常生长。不同低温处理表明,2℃30d或5℃45d可满足‘Applo’对低温的需求。芦笋在经历自然低温和低温处理过程中,鳞芽中GA3、IAA、ZR含量相对稳定,ABA含量先上升后又迅速下降,ABA含量变化与与芦笋休眠及休眠解除有密切关系。
Three-year-old plants of＇Applo＇were used to study the effect of low temperature on bud break and changes of endogenous hormones in bud of asparagus（Asparagus officinalis Linn）.The results showed that asparagus plant showed rapid bud break and spear growth when it was incubated on Oct.30.But when it was incubated on Nov.14 or 29,bud break and spear harvest decreased.While when it was incubated on Dec.14 or later,the bud break had no difference with that incubated on Oct.30,but spear harvest increased.These results suggested that once asparagus plants underwent the period of dormancy induced by the chilling in winter,they needed sufficient chilling duration to restore the activity of bud break and spear growth.The experiment of different low temperature treatment revealed that 2 ℃ 30 d or 5 ℃ 45 d could sastify the chilling duration o＇fApplo＇.During natural or treated chilling period,the content of GA3,IAA and ZR in bud of asparagus was relatively stable,but the content of ABA increased during dormancy stage,and then decreased rapidly to a lower level.The changes of ABA content had close relationship with dormancy and dormancy-breaking of asparagus.
出处
《园艺学报》
CAS
CSCD
北大核心
2011年第1期165-170,共6页
Acta Horticulturae Sinica
基金
河北省农业综合开发治理项目(2006-19)
河北农业大学科学发展计划项目(2007020)
唐山市科技攻关项目(08120204A-7)
关键词
芦笋
低温
休眠解除
内源激素
asparagus
low temperature
dormancy breaking
endogenous hormones
