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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。
Asparagus ’Applo’ was used to study the effects of low temperature on its germination and changes of endogenous hormones in Baoding, Hebei. The results showed that under natural conditions, asparagus could still warm and germinate rapidly on October 30, but the number of germination and number of shoots decreased significantly on November 14 and November 29, while on or after December 14 Insulation, germination number and insulation on October 30 no significant difference in the number of shoots significantly more than October 30 insulation. Asparagus under the action of low temperature into the dormancy stage, you need to meet a certain amount of low temperature accumulation in order to resume normal growth after incubation. Different low-temperature treatments showed that Applo’s demand for low temperature could be satisfied by 2 ℃ for 30d or 5 ℃ for 45d. The content of GA3, IAA and ZR in the shoots of the asparagus was relatively stable under natural hypothermia and low temperature treatment. The content of ABA increased first and then decreased rapidly. The change of ABA content was closely related to the dormancy and dormancy release of asparagus.