武隆是渝东南烟草青枯病高发烟区之一.为筛选适合重庆渝东南烟区种植的优良青枯病抗性品种,保障渝东南烟区烟草产量和品质,本研究以武隆当地主栽烟草品种“云烟87”和“K326”为研究对象,与近年来选育的青枯病抗性新品种“安烟2号”“安...武隆是渝东南烟草青枯病高发烟区之一.为筛选适合重庆渝东南烟区种植的优良青枯病抗性品种,保障渝东南烟区烟草产量和品质,本研究以武隆当地主栽烟草品种“云烟87”和“K326”为研究对象,与近年来选育的青枯病抗性新品种“安烟2号”“安烟3号”“湘烟7号”和“贵烟36”进行对照试验,对各品种的青枯病抗病性、生育期、植物学性状、农艺性状、经济和品质性状等进行综合评价.结果表明,“贵烟36”的青枯病发病率低于“K326”和“云烟87”,病情指数与“K326”相当,低于“云烟87”.其次为“湘烟7号”,“湘烟7号”的发病率和病情指数均略高于“K326”和“云烟87”.“安烟2号”和“安烟3号”表现较差,发病率和病情指数均远高于“K326”和“云烟87”.经济性状显示“湘烟7号”和“贵烟36”每667 m 2的产值分别为3031.8元和3075.3元,与“云烟87”相当,略低于“K326”;烟叶内在化学成分分析显示“安烟3号”和“湘烟7号”表现较好.综合试验结果表明,“湘烟7号”可进一步在渝东南地区进行验证推广.展开更多
58 winter wheat breeding lines and 4 widely popularized varieties in Huaihe River wheat production regions of Anhui were used to screen resistant germplasms to Fusarium head blight. Incidence, disease index, percentag...58 winter wheat breeding lines and 4 widely popularized varieties in Huaihe River wheat production regions of Anhui were used to screen resistant germplasms to Fusarium head blight. Incidence, disease index, percentage of infected kernels and DON content in the kernels were measured for each variety or line following artificial inoculation of Fusarium spp. pathogens. Reactions of wheat to Fusarium infection varied among genotypes and different types of resistance. The incidence of infection for each variety or line highly correlated to the severity of colonization after infection. DON content was more correlated to the percentage of kernels infected than to the overall incidence or severity. The selected control varieties were all susceptible to FHB, while seven breeding lines demonstrated good resistant performance. New FHB resistant winter wheat varieties appealing to the actual needs are expected from them.展开更多
文摘武隆是渝东南烟草青枯病高发烟区之一.为筛选适合重庆渝东南烟区种植的优良青枯病抗性品种,保障渝东南烟区烟草产量和品质,本研究以武隆当地主栽烟草品种“云烟87”和“K326”为研究对象,与近年来选育的青枯病抗性新品种“安烟2号”“安烟3号”“湘烟7号”和“贵烟36”进行对照试验,对各品种的青枯病抗病性、生育期、植物学性状、农艺性状、经济和品质性状等进行综合评价.结果表明,“贵烟36”的青枯病发病率低于“K326”和“云烟87”,病情指数与“K326”相当,低于“云烟87”.其次为“湘烟7号”,“湘烟7号”的发病率和病情指数均略高于“K326”和“云烟87”.“安烟2号”和“安烟3号”表现较差,发病率和病情指数均远高于“K326”和“云烟87”.经济性状显示“湘烟7号”和“贵烟36”每667 m 2的产值分别为3031.8元和3075.3元,与“云烟87”相当,略低于“K326”;烟叶内在化学成分分析显示“安烟3号”和“湘烟7号”表现较好.综合试验结果表明,“湘烟7号”可进一步在渝东南地区进行验证推广.
基金Supported by the Sci-Tech Innovative Project of Anhui Academy of Agricultural Sciences(13A0207)the Special Fund for Agro-scientific Research in the Public Interest(201503112-12)
文摘58 winter wheat breeding lines and 4 widely popularized varieties in Huaihe River wheat production regions of Anhui were used to screen resistant germplasms to Fusarium head blight. Incidence, disease index, percentage of infected kernels and DON content in the kernels were measured for each variety or line following artificial inoculation of Fusarium spp. pathogens. Reactions of wheat to Fusarium infection varied among genotypes and different types of resistance. The incidence of infection for each variety or line highly correlated to the severity of colonization after infection. DON content was more correlated to the percentage of kernels infected than to the overall incidence or severity. The selected control varieties were all susceptible to FHB, while seven breeding lines demonstrated good resistant performance. New FHB resistant winter wheat varieties appealing to the actual needs are expected from them.
