title: [Effects of constant low temperature on cold resistance of different strains Polygonatum odoratum].
abstract: In this paper, the five strains of Polygonatum odoratum were used as the experimental materials to test the supercooling point, freezing point, the degree of supercooling, the transition stage time, cooling time and water composition of the plant tissue. The cold resistance of P. odoratum was analyzed with the Gray Correlation Method. The results showed that the cold resistances of the five strains of P. odoratum were different, and the water content of plant tissue had some relevance with freezing point and supercooling point, whereas, it could not be measured when the moisture content was too low. The order of cold resistance of the five strains of P. odoratum was ZJCY, DYYZ, XYYZ, CYYZ and JZ I.
authors.forename: Er-Huan
authors.initials: EH
authors.lastname: Wang
authors.forename: Yong-Hua
authors.initials: YH
authors.lastname: Xu
authors.forename: Zhong-Bao
authors.initials: ZB
authors.lastname: Zhand
authors.forename: Dian-Wen
authors.initials: DW
authors.lastname: Xu
authors.forename: Guang-Sheng
authors.initials: GS
authors.lastname: Xi
authors.forename: Lian-Xue
authors.initials: LX
authors.lastname: Zhang
mesh_terms: D003080:Cold Temperature; D018517:Plant Roots / Q000737:chemistry / Q000502:physiology; D031384:Polygonatum / Q000737:chemistry* / Q000145:classification / Q000502:physiology*; D014867:Water / Q000032:analysis
chemical_list: D014867:Water