羧甲基壳聚糖和纳米银对芍药切花观赏品质及生理特性的影响  

Effects of Carboxymethyl Chitosan and Nano-Silver on Ornamental Qualities and Physiological Characteristics of Paeonia lactiflora Cut Flowers

作　　者：陈国伟 韩戴宇 杜雪 鞠志新 CHEN Guo-wei;HAN Dai-yu;DU Xue;JU Zhi-xin(College of Horticulture,Jilin Agricultural University,Changchun 130118,China;College of Agriculture,Jilin Agricultural Science and Technology University,Jilin 132101,China)

机构地区：[1]吉林农业大学园艺学院,吉林长春130118 [2]吉林农业科技学院农学院,吉林吉林132101

出　　处：《保鲜与加工》2021年第9期27-34,共8页Storage and Process

基　　金：白山市科技发展计划项目(20190001);吉林省科技厅项目(20190301054NY)。

摘　　要：以芍药切花为试材,以蒸馏水为对照(CK1),3%蔗糖+200 mg/L柠檬酸+25 mg/L水杨酸为基本瓶插液(CK2),探索在基本瓶插液中添加200 mg/L羧甲基壳聚糖(CMCS)和20 mg/L纳米银(NS)对芍药切花瓶插品质及采后生理的影响。结果表明:两种药剂均可改善切花水分平衡状态,提升观赏品质。与对照(CK1)相比,CMCS和NS处理芍药切花最大花径分别增加2.17 cm、3.19 cm,瓶插寿命分别延长3.01 d、4.26 d,最佳观赏期分别延长1.87 d、2.75 d。两种杀菌剂对芍药切花生理特性的调控作用相似,均提高了芍药切花花瓣的可溶性蛋白质含量和超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)等保护酶活性,降低了相对电导率、丙二醛(MDA)及游离脯氨酸(Pro)含量,其中20 mg/L NS处理的保鲜效果最好。In the present study,the effects of 200 mg/L carboxymethyl chitosan(CMCS)and 20 mg/L nano-silver(NS)additions in basic preservation liquid(CK2,3%sucrose+200 mg/L citric acid+25 mg/L salicylic acid)on ornamental qualities and post-physiological characteristics of P.lactiflora cut flowers were investigated using distilled water as control(CK1).Results showed that both of CMCS and NS treatments could improve the water balance of cut flowers and enhance the ornamental qualities.Compared with the control(CK1),the maximum flower diameters of P.lactiflora cut flowers after CMCS and NS treatments were increased by 2.17 cm and 3.19 cm,respectively,and the vase lives were prolonged by 3.01 d and 4.26 d,and the best viewing periods were prolonged by 1.87 d and 2.75 d.Besides,CMCS and NS treatments presented similar regulatory effects on the physiological characteristics of P.lactiflora cut flowers via improving soluble protein contents,enhancing superoxide dismutase(SOD),peroxidase(POD)and catalase(CAT)activities,and decreasing the relative conductivity,malondialdehyde(MDA)and free proline(Pro)contents,moreover,the 20 mg/L NS treatment showed the best preservation effects.

关 键 词：芍药 切花 羧甲基壳聚糖 纳米银 瓶插寿命 生理特性 

分 类 号：S682.12[农业科学—观赏园艺]