›› 2018, Vol. 30 ›› Issue (8): 1349-1354.DOI: 10.3969/j.issn.1004-1524.2018.08.11

• Horticultural Science • Previous Articles     Next Articles

Response of six germplasms of Chrysanthemum and related genera to drought stress

GUO Yanhong1, ZHANG Jingxing1, YANG Yongjuan1, CHEN Juntong1, SUN Ming1,*, LIAO Jing2   

  1. 1. Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China;
    2. Landscape Management Office of Huludao, Huludao 125000, China
  • Received:2017-11-15 Online:2018-08-25 Published:2018-08-28

Abstract: In order to screen drought resistant germplasms of Chrysanthemum and related genera, we investigated and collected sixteen species of germplasm of Chrysanthemum and related sources in north and central China including Inner Mongolia, Hebei, Henan, Anhui, Hubei, Hunan, Shandong and Fujian provinces. According to their wild habitats and adaptation, in this study, photosynthetic characteristics and physiological indexes of leaves under drought stress (soil water content of 30%-35%) were measured by pot experiment in six species including Opisthopappus taihangensis, Filifolium sibiricum, Ajania fruticulosa, Chrysanthemum indicum, Chrysanthemum mongolicum, Chrysanthemum lavandulifolium. And the drought resistance of different species was evaluated by membership function method in order to screen out the germplasms with good quality and high drought resistance. The results showed that the photosynthetic and physiological indexes of the six wild species showed different degrees after drought stress, and the membership function method was used to evaluate the drought resistance from strong to weak followed by: Opisthopappus taihangensis, Filifolium sibiricum, Ajania fruticulosaLedeb, Chrysanthemum lavandulifolium, Chrysanthemum mongolicum, Chrysanthemum indicum.

Key words: Chrysanthemum and related genera, drought resistant, photosynthetic characteristics, physiological indexes, membership function method

CLC Number: