不同处理对桢楠和浙江楠裸根移栽苗成活率与生理特性的影响

Effects of different treatments on survival rates and physiological characteristics of bare-root transplanted seedlings of Phoebe zhennan and P.chekiangensis

为了探究保水剂和ABT联合处理对桢楠(ZN)和浙江楠(ZJN)裸根移栽苗成活率和生理特性的影响,该文使用三种不同浓度的保水剂和ABT联合处理ZN和ZJN裸根苗,测定移栽后的幼苗成活率和生理指标,并用隶属函数对各指标进行综合评价,评估不同条件处理下幼苗恢复情况。结果表明:与对照组相比,联合处理后,ZN和ZJN的成活率显著提高;ZN新叶数量显著增加,而ZJN的新叶数量没有增加;叶绿素和类胡萝卜素含量均显著提高,且ZN1或ZJN1水平更显著;(GA_(3)+ZR+IAA)/ABA和IAA/ABA的比值均显著提高,但ZN在不同浓度处理间无显著差异,而ZJN1显著高于ZJN2处理组;可溶性蛋白和可溶性糖的含量均减少;隶属函数综合评价分析表明裸根苗移栽成活率的表现分别为ZN1>ZN2>CK和ZJN1>ZJN2>CK。综上结果表明,保水剂和ABT联合处理促进ZN和ZJN裸根苗移栽成活,且ZN1或ZJN1水平更优。

This study aimed to explore the effects of combination of three different concentrations of super-absorbent polymer and ABT on the survival rate and physiological characteristics of bare-root seedlings transplanted with Phoebe zhennan(ZN)and P.chekiangensis(ZJN).P.zhennan and P.chekiangensis bare-root seedlings were treated with three different concentrations of super-absorbent polymer combined with ABT rooting powder,and the survival rate and physiological indexes of seedlings after transplanting were measured.Then,all indexes were comprehensively evaluated to decide the recovery of seedlings under different conditions by the membership function analysis.The results were as follows:Compared to the control group,the survival rates of ZN and ZJN were significantly increased under the treatment;The number of new leaves in ZN was increased,while there was no differences in the number of new leaves in ZJN;The contents of chlorophyll and carotenoid were significantly increased,especially in ZN1 group or ZJN1 group;The values of(GA_(3)+ZR+IAA)/ABA and IAA/ABA in ZN and ZJN were significantly elevated,and there were no significant differences between different treatments in ZN,whereas the value was higher in ZJN1 than that in the ZJN2 treatment group;The contents of soluble protein and soluble sugar were significantly decreased;The membership function analysis showed that the ranking of survival rate of the bare-root transplanted seedlings were ZN1>ZN2>CK and ZJN1>ZJN2>CK,respectively.In conclusion,the combination treatments of super-absorbent polymer and ABT promoted the survival of ZN and ZJN bare-root transplantation seedlings,and the level of ZN1 or ZJN1 was better.