Evaluation of Chinese rice varieties resistant to the root- knot nematode Meloidogyne graminicola
文献类型： 外文期刊
作者： Zhan Li-ping 1 ; Ding Zhong 2 ; Peng De-liang 1 ; Peng Huan 1 ; Kong Ling-an 1 ; Liu Shi-ming 1 ; Liu Ying 1 ; Li Zhong-c 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China
2.Hunan Agr Univ, Coll Plant Protect, Changsha 410128, Hunan, Peoples R China
3.Agr Bur Hanshou Cty, Changde 415900, Hunan, Peoples R China
关键词： Meloidogyne graminicola; rice varieties; resistant; susceptible; resistance evaluation
期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）
ISSN： 2095-3119
年卷期： 2018 年 17 卷 3 期
页码：
收录情况： SCI
摘要： The root-knot nematode Meloidogyne graminicola, which is distributed worldwide, is considered a major constraint on rice production in Asia. The present study used the root gall index and number of nematodes inside the roots to evaluate resistance/susceptibility to M. graminicola in different subpopulations of Oryza sativa (aus, hybrid aus, indica, hybrid indica, temperate japonica, tropical japonica). Nematode development in highly resistant varieties was also evaluated. Analyses of randomly selected 35 varieties showed the number of M. graminicola nematodes inside the roots correlated very strongly (r=0.87, P <= 0.05) with the nematode gall index, and the results from pot and field experiments revealed similar rankings of the varieties for resistance/susceptibility. Among the 136 tested varieties, temperate japonica displayed the highest gall index, followed by tropical japonica, indica, hybrid indica, aus, and hybrid aus. Zhonghua 11 (aus), Shenliangyou 1 (hybrid aus) and Cliangyou 4418 (hybrid indica) were highly resistant to M. graminicola under both pot and field conditions. Further examination of nematode development suggested that compared to susceptible rice, M. graminicola penetrated less often into highly resistant varieties and more frequently failed to develop into females. The promising varieties found in the present research might be useful for the breeding of hybrid rice in China and for the further development of practical nematode management measures.
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