南方厚皮甜瓜品种耐热性比较  

Comparaison on Heat Resistance of Thick-skin Muskmelon Cultivars in South China

作　　者：万正林[1] 周建辉[1] 陈宝玲 张曼[1] 刘文君[1] 周艳霞[1] WAN Zhenglin;ZHOU Jianhui;CHEN Baoling;ZHANG Man;LIU Wenjun;ZHOU Yanxia(Vegetable Research Institute,Guangxi Academy of Agricultural Sciences,Nanning,Guangxi 530007)

机构地区：[1]广西农业科学院蔬菜研究所,广西南宁530007

出　　处：《北方园艺》2021年第22期53-59,共7页Northern Horticulture

基　　金：国家现代农业产业技术体系广西创新团队建设资助项目(nycytxgxcxtd-17-07);广西农业科学院基本科研业务专项资助项目(桂农科2021YT107);广西特色作物试验站建设任务书资助项目(桂TS2016014);科技先锋队“强农富民”“六个一”专项行动资助项目(桂农科盟202005);广西科技重大专项资助项目(桂科AA17204026)。

摘　　要：以华南产区4个主栽厚皮甜瓜品种"桂蜜12号""北甜1号""丰蜜二号""西州蜜25号"为试材,通过人工模拟高温逆境,测定苗期幼苗叶片的超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性、丙二醛(MDA)和叶绿素含量,统计了成株期大棚自然高温对田间坐果率、果实畸形率、成熟果实可溶性固形物含量及可食率等生理指标,采用隶属函数值法比较了4个甜瓜品种的耐热性,以期为华南产区厚皮甜瓜安全越夏及品种筛选提供参考依据。结果表明:在人工模拟高温逆境下,4个供试品种苗期幼苗叶片中SOD、POD、CAT活性及MDA含量均显著升高(P<0.01),叶片叶绿素含量均显著下降(P<0.05),成株期大棚内自然高温对田间坐果率、果实畸形率及成熟果实可溶性固形物含量及可食率影响大,隶属函数值法综合分析表明,4个供试品种苗期的耐热性与成株期结果一致,4个供试甜瓜品种耐热性依次为"桂蜜12号">"北甜1号">"丰蜜二号">"西州蜜25号"。‘Guimi No.12’‘Beitian No.1’‘Fengmi No.2’ and ‘Xizhoumi No.25’ were taken as materials, which were the main cultivars in South China.The activities of superoxide dismutase(SOD),peroxidase(POD),catalase(CAT),and the content of malondialdehyde(MDA) and chlorophyll in seedling leaves under manual simulation high temperature stress were measured, and the physiological indexes such as fruit setting rate, fruit deformity rate, soluble solid content and edible rate of mature fruit in natural high temperature in greenhouse during adult stage were analyzed, the heat tolerance of four muskmelon cultivars by membership function value method were evaluated, in order to provide a theoretical basis for safe over-summer cultivation and varieties selection of muskmelon in south China.The results showed that the activities of SOD,POD,CAT and the content of MDA were significantly increased(P<0.01),and the content of chlorophyll was significantly decreased(P<0.05) under manual simulation high temperature stress during seedling stage of four muskmelons.The natural high temperature in greenhouse during adult stage of four different muskmelon cultivars had great influence on the fruit setting rate, fruit deformity rate, the fruit soluble solid content and edible rate, through comprehensive evaluation by membership function value method showed, the order of heat tolerance of the four muskmelon cultivars at adult stage was the same as seedling stage.The order of heat tolerance of the four muskmelon cultivars was‘Guimi No.12’>‘Beitian No.1’>‘Fengmi No.2’>‘Xizhoumi No.25’.

关 键 词：厚皮甜瓜 耐热性 隶属函数值法 

分 类 号：S652.1[农业科学—果树学]