Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (4): 191-195.doi: 10.11924/j.issn.1000-6850.casb15070069

Special Issue: 园艺 农业生态

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Screening of Cucumber Germplasms with Resistance to Target Leaf Spotand Analysis of Its Distribution of Resistance

Li Yali, Hou Dong, Yue Hongzhong, Zhang Dongqin   

  1. (Vegetable Institute, Gansu Academy of Agricultural Sciences, Lanzhou 730070)
  • Received:2015-07-12 Revised:2015-08-02 Accepted:2015-08-13 Online:2016-02-01 Published:2016-02-01

Abstract: In order to create cucumber germplasms that resist target leaf spot, this experiment researched and analyzed resistance of 68 domestic and foreign cucumber germplasms to target leaf spot and the distribution of resistance. Cucumbers were naturally infected by target leaf spot in adult stage. Growth vigor, sexual type, leaf color, rind color and disease index of target leaf spot were investigated. The results showed that among the 68 germplasms, there were 10 high resistance germplasms which accounted for 14.71%, resistance germplasms were 10.29%, moderate resistance germplasms were 11.76%, susceptible germplasms were 29.41%, and high susceptible germplasms were 33.82%. The European greenhouse cucumbers had more resistance to target leaf spot. The weaker the growth vigor, the more resistance the germplasms had to target leaf spot. Female cucumbers had better resistance to target leaf spot. Cucumbers with dark green leaves were more resistant to target leaf spot. Cucumbers with white green rinds were more resistant to target leaf spot.