期刊
HORTSCIENCE
卷 47, 期 9, 页码 1241-1244出版社
AMER SOC HORTICULTURAL SCIENCE
DOI: 10.21273/HORTSCI.47.9.1241
关键词
apple breeding; disease resistance; Mains x domestica
类别
资金
- Northwest A&F University, Shaanxi, China
- Modern Agroindustry Technology Research System [CARS-28]
- Modern Apple Industry Technology System (MATS)
- Foreign Study in Shaanxi Province [A289021201]
A comparison of field tolerance of 25 apple (Malus x domestica) cultivars and 39 apple rootstocks to the pathogens Marssonina coronaria and Alternarie alternata apple pathotype was performed. Although most apple cultivars grown in China were susceptible or highly susceptible to both pathogens causing two diseases, considerable variation in the level of resistance to both pathogens was observed. Only three cultivars, Qinguan, Jiguan, and Xiangyanghong, exhibited resistance to both pathogens. Among the rootstocks tested, 30 of 39 (77%) were susceptible or highly susceptible to M. coronaria and 32 (82%) were susceptible to the A. alternata apple pathotype. Four rootstocks, 'P.22', 'SH12', 'Za'ai 76', and 'Qingdao598', were resistant to both pathogens. The correlation between resistance to both pathogens was highly significant in the 74 apple cultivars and rootstocks tested suggesting common genetic resistance factors to these two pathogens. Data represented horizontal resistance in the germplasm. The resistant local germplasm should be used in disease resistance breeding programs.
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