Details

Autor(en) / Beteiligte

• ZHAN, Li-ping
• DING, Zhong
• PENG, De-liang
• PENG, Huan
• KONG, Ling-an
• LIU, Shi-ming
• LIU, Ying
• LI, Zhong-cai
• HUAG, Wen-kun

Titel

Evaluation of Chinese rice varieties resistant to the root-knot nematode Meloidogyne graminicola

Ist Teil von

• Journal of Integrative Agriculture, 2018-03, Vol.17 (3), p.621-630

Ort / Verlag

State Key Laboratory for Biology of Plant Diseases and Insect Pests/Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R.China%College of Plant Protection, Hunan Agricultural University, Changsha 410128, P.R.China%Agriculture Bureau of Hanshou County, Hunan Province, Changde 415900, P.R.China

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.