抗寒剂诱导仁用杏花期抗寒力研究

在仁用杏花芽膨大期分别喷施ABA、‘杏花防冻剂’、‘冻害必施’和‘天达-2116’等4种抗寒剂,测定花蕾、花朵和幼果中电解质渗出率、SOD和POD活性以及可溶性糖、可溶性蛋白质和MDA含量,研究4种抗寒剂诱导仁用杏花期抗寒力的差异。结果表明,(1)4种抗寒剂均能不同程度地降低仁用杏半致死温度,诱导抗寒力提高,其中,‘杏花防冻剂’对仁用杏抗寒力的诱导效果最好,ABA次之;(2)‘杏花防冻剂’和ABA均能提高仁用杏花期的可溶性糖和可溶性蛋白质含量,增强SOD和POD活性,降低MDA含量,进一步证明抗寒剂可提高仁用杏花期的抗寒能力。

Cold-Resistant Ability of Kernel Apricot Induced by Cold-resistant Agents during Flower Period

4 kinds of cold-resistant agent including 'Xinghuafangdongji',ABA,'Donghaibishi' and 'Tianda-2116' were spurted to kernel apricot during the expanding-time.The electrolyte leakage,SOD and POD activities,and content of soluble sugar and protein and MDA,in the flower buds,flowers and the young fruits of kernel apricot,were measured.The influence of these cold-resistant agents on cold resistance during flowering period in kernel apricot was ananlyzed.The results showed that all 4 cold-resistant agents could decrease the semi-lethal temperatures and enhance the cold resistance respectively;the most effective one is 'Xinghuafangxongji'.'Donghaibishi' and 'Tianda-2116' are less effective.'Xinghuafangxongji' and ABA could increase the soluble sugar and protein content,strength SOD and POD activities,and reduce MDA content in kernel apricot.The results indicated that cold-resistant agent could improve the cold resistance of kernel apricot.