黑龙江省西甜瓜栽培品种及种质资源对细菌性果斑病的抗性鉴定

采用室内苗期人工接种鉴定方法，对黑龙江省市售的16 份西、甜瓜栽培品种和84 份种质资源进行了细菌性果斑病的抗病性鉴定。10 份西瓜栽培品种中新红宝、京欣1 号、双抗大地雷、特大庆红宝、超丰F1、庆发7 号等6 个品种表现为中抗；景丰宝和齐红西瓜表现为中感；吉福2 号和庆农1 号表现为感病；6 份甜瓜栽培品种中齐甜1 号、永甜3 号和龙甜3 号3 个品种表现为中抗；日本甜宝和龙甜1 号2 个品种表现为中感；本甜3 号表现为感病；西、甜瓜栽培品种中均未发现高抗及免疫品种。49 份甜瓜种质资源中抗病材料占鉴定种质资源总数的57.1%，从中筛选出3 份高抗材料分别为X11-3、X11-1 和X11-8；在35 份西瓜种质资源中抗病材料占鉴定总数的48.6%，从中筛选出2 份高抗材料11W005 和11W003。

Resistance Identification of Watermelon and Melon Varieties and their Germplasm Resources in Heilongjiang Province against Acidovorax avenae

In this study，in-door seedling-inoculation method was used to identify the resistance of 16 cultivars and 84 germplasm resources collected from Heilongjiang against Acidovorax avenae. Among the 10 watermelon cultivars，‘Xinhongbao’，‘Jingxin No.1’，‘Shuangkangdadilei’，‘Tedaqinghongbao’，‘Chaofeng F1’ and‘ Qingfa No.7’ were mid-resistant，‘Jingfengbao’ and‘Qihongxigua’ were mid-susceptible，and‘ Jifu No.2’，‘Qingnong No.1’ were susceptible. Among the 6 melon cultivars，‘Qitian No.1’，‘Yongtian No.3’and‘Longtian No.3’ were mid-resistant，‘Ribentianbao’ and‘ Longtian No.1’were moderate susceptible，and‘ Bentian No.3’ was susceptible.No high resistant and immune cultivar was found in watermelon and melon cultivars. Among the 49 melon germplasms the resistant resources accounted for 57.1%. X11-3，X11-1 and X11-8 were high resistant. Among the 35 watermelon germplasms，the resistant resources accounted for 48.6%，11W005 and 11W003 were high resistant.