Evaluation of Resistance to Scab in Pear Germplasms
The resistance to pear scab of 197 pear cultivars in national pear germplasm repository was evaluated by artificial inoculation of Venturia nashicola. The results showed that the morbidity of different pear varieties varied widely. Chinese white pear cultivars (Pyrus bretschneideri Rehd. ) and sand pear cultivars (P. pyrifolia (Burm. f. ) Nakai) were the most susceptible to scab. Ussurian cultivars (P. usmrimsis Maxim. ) and Pyrus hybrid cultivars were the second most susceptible to scab. Xinjiang pear cultivars (P. sinkiangensis Yii) were resistant to scab. European pears cultivars (P. communis L. ) were the most resistant to scab. The distribution of disease index in pear cultivars was analyzed. Huangjitui, Shuaili, Suanli, Jinxiang, and a number of resistant resources were identified and the disease susceptibility results between natural occurrence and artificial inoculation were compared.
NETL
NSTL
万方数据
维普
