A Preliminary Study on Cold Resistance of Six Magnolia Species Seedlings

Authors LI Gang; JIANG Weibing; WENG Mangling; JIANG Wu; CAO Jing

Journal Acta Horticulturae Sinica , OCT 15 2015,11:22

DOI 10.1016/j.phymed.2015.07.009 PubMed 26407944

Abstract The performance and the physiological indices including CI, TL_(50), MDA and Chl. during the course of winter were investigated to study the cold resistance of six evergreen magnolia species. All species'' chilling assistance was strengthened after a period of low temperature domestication. The magnolia species that distributed naturally in middle-subtropical areas had much lower CI and TL_(50) than that distributed naturally in sourthern-subtropical areas. All species'' contents of MDA ascended while Chl. descended during the course of winter. The cold resistance of six magnolia species were arranged in sumarization of the value of above indice; Parakmeria lotungensis was the strongest, followed by Michelia platypetala, Michelia foveolata, Manglietia in-signis, Michelia macclurei and Tsoongiodendron odorum.