南方冬作区马铃薯新品种闽薯2号耐寒性鉴定  

Cold Tolerance Identification of New Potato Variety‘Minshu No.2’in Winter Cropping Area of Southern China

作　　者：罗文彬[1] 李华伟[1] 许国春 林志坚[1] 纪荣昌[1] 许泳清[1] 邱思鑫[1] 汤浩[1] LUO Wenbin;LI Huawei;XU Guochun;LIN Zhijian;JI Rongchang;XU Yongqing;QIU Sixin;TANG Hao(Crop Research Institute,Fujian Academy of Agricultural Sciences,Scientific Observing and Experimental Station of Tuber and Root Crops in South China,Ministry of Agriculture,Technical Research Center of Specialty Day Crop Variety Breeding of Fujian,Fuzhou 350013,Fujian,China)

机构地区：[1]福建省农业科学院作物研究所,农业农村部南方薯类科学观测实验站,福建省特色旱作物品种选育工程技术研究中心,福建福州350013

出　　处：《中国蔬菜》2022年第9期63-67,共5页China Vegetables

基　　金：福建省农业科学院自由探索科技创新项目(ZYTS2021002);福建省科技计划公益类专项(2020R1031004);福建省种业创新与产业化工程项目(zycxny2021005)。

摘　　要：为鉴定和评价马铃薯新品种闽薯2号的耐寒性,以闽薯2号和费乌瑞它(CK)为试验材料,采用电导率法和田间自然霜冻法,测定驯化前后离体叶片半致死温度(LT_(50)),霜冻前后植株损伤等级、形态特征和叶片微生物多样性指数。结果表明,闽薯2号冷驯化前、后的LT_(50)均显著低于费乌瑞它;低温霜冻后闽薯2号的损伤等级显著低于费乌瑞它;闽薯2号霜冻后叶片组织的微生物变化比费乌瑞它小。综上,闽薯2号比费乌瑞它具有更强的耐寒性,建议在我国马铃薯南方冬作区推广种植。In order to identify and evaluate the cold tolerance of new potato variety‘Minshu No.2’,this paper took‘Minshu No.2’and‘Favorita’(CK)as test materials;adopted conductivity and field natural frost methods to measure the semi-lethal temperature(LT_(50))of in vitro leaf before and after cold acclimation,plant damage grade before and after frost,moephological chacteristics and leaf microbial diversity index.The results showed that the LT_(50) of‘Minshu No.2’before and after cold acclimation were remarkably lower than that of‘Favorita’.The damage grade of‘Minshu No.2’was significantly lower than that of‘Favorita’after low temperature frost.After frost,the changes in leaf tissue microorganism of‘Minshu No.2’were smaller than in‘Favorita’.Summing up the above,‘Minshu No.2’had stronger cold tolerance than‘Favorita’.It is suggested to extend its plantation in potato winter planting area of southern China.

关 键 词：马铃薯 闽薯2号 耐寒性 冷驯化 

分 类 号：S532[农业科学—作物学]