不同种源金线兰及近缘种多糖和总黄酮含量的研究

通过对6月龄棚栽不同种源金线兰及近缘种的农艺性状、多糖和总黄酮含量的测定,结果表明:不同种源金线兰农艺性状间差异显著,对照种福建金线兰百株鲜重和百株干重均最高,分别达284.75、45.885g;来源于广西百色的金线兰多糖含量最高,含量达169.61mg·g~(-1) DW,比对照种增加36.56%;来源于福建省沙县南阳乡竹山村的金线兰(7号)总黄酮含量最高,含量达9.18mg·g~(-1) DW,比对照种增加34.74%。台湾银线兰多糖含量低于金线兰和野生齿唇兰,总黄酮含量高于野生齿唇兰,并与对照种福建金线兰相当;来源于福建沙县南阳乡竹山村的金线兰叶脉无线种(7号)多糖和总黄酮含量均较高,具有较好的开发前景。

Polysaccharide and Flavonoid Contents in Anoedtodhilus roxburghii and Related Species

Major agronomical characteristics and contents of polysaccharides and flavonoids in Anoectochilus roxburghii and related species from different areas cultivated in a greenhouse for 6 months prior to the chemical analyses were compared.There were distinctive agronomical differences among the sampled species.For instance, the highest yield was shown CK from Fujian,with a per hundred plants fresh weight(FW)of 284.75 g and dry weight (DW)of 45.885 g;the highest polysaccharide content,in the variety from Baise,Guanxi,at 169.61 mg· g-1 DW,which was 36.56% higher than CK;and,the highest total flavonoids,in the cultivars from Zhushan Village,Nanyang Township,Shaxian,Fujian (No.7),at 9.18 mg·g-1 DW,which was 34.74% higher than CK. By comparison,the polysaccharide content of A.formosanus was lower than that of A.roxburghii and A. lanceolatus ;the total flavonoids of A.formosanus ,higher than that of A.lanceolatus ,but not significantly different from those of the cultivars from Fujian;and,both polysaccharides and total flavonoid significantly higher in No.7. Consequently,the cultivars from Zhushan was considered to have a potential for further study and promotion.