Journal of Northern Agriculture ›› 2020, Vol. 48 ›› Issue (6): 76-80.doi: 10.12190/j.issn.2096-1197.2020.06.12

• Plant protection· Agroecology environment • Previous Articles     Next Articles

Evaluation of apple and pear resistance to ring rot in Hohhot

SUN Pingping, SHI Yajun, ZHANG Lei, LI Xiaoyan, MA Qiang, LI Zhengnan   

  1. College of Horticulture and Plant Protection,Inner Mongolia Agricultural University,Hohhot 010011,China
  • Received:2020-10-10 Online:2020-12-20 Published:2021-02-04

Abstract: 【Objective】To evaluate the resistance to ring rot for apple and pear fruits in Hohhot of Inner Mongolia,and provide information for the breeding of disease resistance apple and pear cultivars in cold and drought area.【Methods】Taking Qiuxiang and Fuji as control,after inoculating the fruit of apple and pear with Physalospora piricola,the disease susceptibility rate,lesion diameter and lesion expansion rate were measured to evaluate the resistance of 7 kinds of apple and pear fruits(Jinhong,Shennong No.2,Lvhongbao,Jixinguo,Huoyanhaitang,Pingguo pear,Zaosu pear)in Hohhot to the disease. The micro structure of the resistant and the susceptible cultivar were compared by election microscopy.【Results】Pingguo pear,Huoyanhaitang were super susceptible cultivars to ring rot,Lvhongbao,Jinhong,Jixinguo and Zaosu pear were medium susceptible cultivars,Fuji and Qiuxiang were medium resistant cultivars,and Shennong No.2 was super resistant cultivar. The results of microstructural observation showed that Huoyanhaitang was susceptible cultivar and Shennong No.2 was resistant cultivar.【Conclusion】The Huoyanhaitang and Pingguo pear were super susceptible cultivars to ring rot,while Shennong No.2 was super resistant cultivar in Hohhot.

Key words: Ring rot, Apple, Pear, Resistance evaluation, Hohhot

CLC Number: 

  • S436.611.1