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中国油料作物学报 ›› 2019, Vol. 41 ›› Issue (3): 415-.doi: 10.7505/j.issn.1007-9084.2019.03.014

• 土肥植保 • 上一篇    下一篇

花生品系对白绢病的抗性评价及产量损失研究

晏立英,副研究员,从事油料作物病害研究,E-mail:yanliying2002@126.com   

  1. 中国农业科学院油料作物研究所/油料作物生物学与遗传育种重点实验室,湖北武汉,430062
  • 出版日期:2019-06-28 发布日期:2019-09-02
  • 通讯作者: 廖伯寿,研究员,从事花生病害研究,E-mail:lboshou@hotmail.com
  • 基金资助:
    国家重点研发计划资助(2018YFD0201000);国家花生产业技术体系(CARS-13);中国农业科学院科技创新工程(CAAS-ASTIP-2013-OCRI)

Resistance evaluation and yield loss of peanut lines to peanut stem rot caused by Sclerotium rolfsii

  1. Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
  • Online:2019-06-28 Published:2019-09-02

摘要:

选取中国农业科学院油料作物研究所培育的10个花生新品系,通过自然发病和人工接种的方法进行了白绢病抗性鉴定和产量损失研究。结果表明,在自然发病的条件下,10份品系由白绢病造成的枯萎率为11.0%~50.0%,其中7份品系白绢病枯萎率低于30.0%。结果还表明,白绢病枯萎率与花生荚果产量呈显著负相关(r = -0.72,P<0.05)。在田间人工接种条件下,接种2周后10个品系白绢病枯萎率为66.1%~94.0%,收获前白绢病枯萎率为66.1%~97.4%,均为感病品系;白绢病枯萎率与花生荚果产量的相关系数为-0.85(P <0.05)。产量损失试验表明,在人工接种条件下,所有品系产量损失均超过91.7%,严重者几乎绝产。综合田间自然发病和人工接种鉴定,获得一份耐病品系16-A13440。

关键词: 花生, 白绢病, 抗病性, 产量损失

Abstract:

Ten peanut lines developed by Oil Crops Research Institute (CAAS, Wuhan, China) were evaluated for resistance and yield loss to peanut stem rot caused by Sclerotium rolfsii under natural disease condition and by artificial inoculation. The results indicated that the wilting rates of these lines ranged from 11.0% to 50.0% under natural disease condition and 7 lines had the wilting rates lower than 30.0%. Peanut yield and wilting rate were significantly negative correlated (r = - 0.72, P<0.05). The wilting rates of these lines (from 66.1% to 94.0%), at two weeks post inoculation in the artificial inoculation experiment, were lower than those (from 66.1% to 97.4%) before harvest, all these lines were susceptible to infection by S. rolfsii. The peanut yield was negatively related with wilting rate by artificial inoculation with the correlation coefficient of -0.85 (P<0.05). The peanut yield loss was higher than 91.7% for the least susceptible line after artificial inoculation. One tolerant line 16-A13440 was identified.