作　　者： ; ; ; ; ;

机构地区： 广东海洋大学农学院

出　　处： 《中国南方果树》 2011年第4期16-18,31,共4页

摘　　要： 以20℃处理为对照,研究了巴厘、台农17号、澳大利亚卡因等3个菠萝品种在15、10和5℃低温胁迫下3天后叶片可溶性糖、过氧化物酶(POD)和过氧化氢酶(CAT)活性、抗坏血酸(AsA)含量的变化,并调查了植株冻害等级。结果表明,低温诱导菠萝体内产生更多的可溶性糖;在低温胁迫下POD活性升高,CAT活性降低,AsA含量减少;巴厘、台农17号寒害级别为1级,澳大利亚卡因为2级。认为菠萝的耐寒性应采用综合指标鉴定。 Reactions of pineapple to cold stress were investigated by measuring soluble sugar content,Peroxidase（POD） activity,Catalase（CAT） activity,Ascorbic acid（AsA） content in leaves of ＇Comte de Paris＇,＇Tainong No.17＇,and ＇Australian cayenne＇ mango cultivars treated under 15℃,10℃ and 5℃ for 3 days,using 20℃ as a control.Cold injuries of the plants were also investigated.The results showed that soluble sugar content and POD activity were increased whereas CAT activity and ASA content were decreased after various low temperature treatments.The resulting cold injuries of ＇Comte de Paris＇ and ＇Tainong No.17＇ were rated as grade 1,and that of ＇Australian cayenne＇ was grade 2.It was recommended that the cold resistance of pineapples should be evaluated using a compound indicator.

关 键 词： 菠萝 低温胁迫 生理反应

领　　域： [农业科学] [农业科学]