ADVANCED RESEARCH ON CHRYSANTHEMUM GERMPLASM RESOURCES IN CHINA

Chrysanthemum (Chrysanthemum × morifolium Ramat.) originates from China and has spread throughout the world.
During 2600 years of cultivation, rich cultural connotation and lofty horticulture cultivation techniques were developed.
There are at least 3,000 cultivars in China.
Although there are plenty of data on chrysanthemum breeding, the research on this rich germplasm resource is in adequate compared to its large cultivar number.
Especially, the limited study of traditional cultivars in China, holds back the progress of industrialization.
For 8 years, we have collected more than 800 chrysanthemum cultivars of traditional style which were bred or selected by Chinese florists.
Morphological taxonomic study showed that these samples could be classified into at least five corolla shapes and 30 inflorescence types.
Numerical taxonomic and cladistic studies showed that three wild species among the 17 in China are closely related to the cultivars.
The number of chromosomes generally ranged from 50 to 70. Most cultivars are hexaploid or aneuploid.
The karyotypes of most cultivars are 2A or 2B. Chromosome satellites are obviously observed in most cultivars especially in the traditional ones.
Based on all these genetic analyses, RAPD, AFLP and ISSR markers performed on over 200 cultivars were used to identify these samples, and they can all bring about informative data for classification.
All these genetic analyses are important to develop and utilize chrysanthemum germplasm resources.

XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010): International Symposium on Advances in Ornamentals, Landscape and Urban Horticulture

Silan Dai, Lijun Zhang, Xinyan Luo, Xinxiang Bai, Yingxiu Xu, Qianqian Liu, Mingli Zhu, Baoqin Li, Jing He, Renwei Li, Jun Zhu , Jie Lu

Chrysanthemum × morifolium, Chinese traditional cultivars, genetic analysis

https://doi.org/10.17660/ActaHortic.2012.937.42