【摘要】 中国南方冬春季节的低温常对栽培香蕉幼苗和挂果蕉株造成寒害。筛选有效的抗寒保护剂和探明适宜的施药浓度是建立香蕉抗寒栽培模式的集成技术之一。通过喷施不同浓度氯化胆碱(CC,Choline Chloride)来筛选持续降温条件下香蕉苗最佳抗寒保护剂量。结果表明:喷施CC浓度为50mg/L时能显著提高持续降温条件下香蕉苗过氧化物酶(POD)、过氧化氢酶(CAT)两种保护酶的活性,而对细胞膜造成伤害的丙二醛(MDA)含量和衡量细胞离子外渗情况的相对电导率(REC)则明显降低。50mg/L的CC可作为香蕉苗抗寒保护剂。更多还原

【Abstract】 The banana seedling or plant with fruits is constantly hit by chilly injury in southern area of China between winter and spring.The study aimed to screen the optimum CC concentration among 0 mg/L,50 mg/L,100 mg/L,150 mg/L and 200 mg/L for banana seedling anti-chilly-injury by spurted different Concentration CC on the banana plantlet when the temperature sustaining falling from 25℃ to 7℃ and recover temperature were 10℃,25℃.The result shown,50mg/L CC concentration Treatment can prominent enhanced banana protection Enzyme Activity of Peroxidase(POD) and Catalase(CAT),Meanwhile injury to the cell membrane Malondialdehyde(MDA) content and To measure cell ion extravasation of relative conductivity(REC) can prominent fell when the temperature sustaining falling from 25℃ to 7℃ and recover period can quickly renew growth.50mg/L CC can enhance banana chilly-injury tolerance.更多还原