@Article{phyton.2020.012361,
AUTHOR = {Huiyun Li, Ye Liu, Sumei Chen, Jiafu Jiang, Aiping Song, Weimin Fang, Fadi Chen},
TITLE = {Variation for Resistance to <i>Alternaria tenuissima</i> and Potential Structural Mechanism among Different Cultivars of <i>Chrysanthemum morifolium</i>},
JOURNAL = {Phyton-International Journal of Experimental Botany},
VOLUME = {89},
YEAR = {2020},
NUMBER = {4},
PAGES = {851--859},
URL = {http://www.techscience.com/phyton/v89n4/40519},
ISSN = {1851-5657},
ABSTRACT = {Black spot disease, caused by the necrotrophic fungus <i>Alternaria
tenuissima</i> (Fr.) Wiltsh (<i>A. tenuissima</i>), is considered a highly destructive disease
of Chrysanthemum (<i>Chrysanthemum morifolium</i> Ramat.). A set of 17 accessions
of commercial chrysanthemum cultivars were evaluated for resistance to <i>A.
tenuissima</i> by seedling artificial inoculation. It was found that the reaction of
the accessions to artificial inoculation ranged from resistant to highly susceptible.
Five varieties of chrysanthemum (‘Zhongshan Taogui’, ‘Jinba’, ‘Zhongshan Jinguan’, ‘Jinling Wanhuang’ and ‘Jinling Yangguang’) were resistant; two varieties
of chrysanthemum (‘Zhongshan Xinggui’ and ‘Zhongshan Jinkui’) were moderately resistant; and others were susceptible to various degrees, four varieties of
chrysanthemum (‘Zhongshan Zihe’, ‘Zhongshan Jiuhong’, ‘Zaoyihong’ and ‘Jinling Jiaohuang’) were highly susceptible, especially. Some leaf morphological features of two resistant and two highly susceptible cultivars were further researched.
Trichome density, length, height, gland size and stomata density were found to be
associated with plant passive resistance. Resistant varieties that were identified in
present study will be promising germplasm for exploitation of breeding programmes aimed at developing <i>A. tenuissima</i>-resistant cultivars and increasing
genetic diversity.},
DOI = {10.32604/phyton.2020.012361}
}