不同种源铁皮石斛生物学性状和糖类成分比较  

Comparison of Biological Characteristics and Carbohydrate Composition of Dendrobium officinale from Different Germplasm Resources

作　　者：罗海斌[1] 李春牛[1] 卢家仕[1] 屈婷婷[1] 曾宋君[2] 卜朝阳[1] 

机构地区：[1]广西农业科学院花卉研究所,广西南宁530007 [2]中国科学院华南植物园华南农业植物遗传育种重点实验室,广东广州510650

出　　处：《热带作物学报》2015年第11期2044-2049,共6页Chinese Journal of Tropical Crops

基　　金：广西农业科学院基本科研业务专项(No.2015YT89);广西农业科学院成果转化专项(农成转201402)

摘　　要：为筛选出适宜在广西南宁地区种植的优良铁皮石斛种源,并为下一步筛选优良品系和遗传育种提供参考依据。以5种不同种源铁皮石斛为试验材料,在南宁地区引种栽培2 a后,观察其生物学性状,测定叶绿素和糖类含量。结果发现:不同种源地的铁皮石斛生物学性状、叶绿素和糖类含量均呈现出差异;云南河口铁皮石斛生物学性状表现良好,叶绿素含量中等,但多糖和甘露糖含量较低。浙江乐清种源株高最矮,叶面积最小,叶绿素含量最低,但多糖含量较高,甘露糖含量中等。广西桂平铁皮石斛茎较粗,叶片宽大,叶绿素含量、多糖含量中等,甘露糖含量最高。广西玉林和桂平铁皮石斛生物学性状相近,多糖含量最高,甘露糖含量较低;广西乐业铁皮石斛茎细,叶片狭长,叶绿素含量最高,多糖和甘露糖较高。说明广西桂平和广西乐业2个种源在南宁地区的适应性较好,品质较高,适宜推广种植。Abstrac t In order to select the suitable varieties of Dendrobium officinale to cultivate in Nanning area and provide information for screening excellent varieties and genetic breeding. Five different germplasm resources of D.officinale were introduced and cultured in Nanning City in Guangxi. The biological characters, chlorophyll contents and saccharides components of them after two years planting were studied. The study found that the five Dendrobium officinale from different origins had different biological characters, chlorophyll contents and saccharides components. The biological characteristics of the D. officinale in Hekou City in Yunnan was good, its content of chlorophyll was medium, but its content of polysaccharide and mannitol was low. The plant height of the D.officinale in Yueqing City in Zhejiang was the shortest. Its leaf area was the smallest and the content of chlorophyll was the lowest, but the content of polysaccharide was higher and the content of mannose was medium.The stem of the D. officinale in Guiping City in Guangxi was thick. Its leaf area was large, the content of chlorophyll and polysaccharide was medium, but the content of mannose was the highest. The biological characteristics of the D. officinale in Yulin city and Leye city in Guangxi was close. The content of polysaccharide was the highest, but the content of mannose was lower. The stem of the D. officinale in Leye City in Guangxi was the thinnest. Its leaf area was narrow, the content of chlorophyll was the hightest and the content of polysaccharide and mannose was high. The results showed that the two germplasm resources of D.officinale in Guiping City in Guangxi and in Leye City in Guangxi had better adaptability and were suitable to plant in Nanning area.

关 键 词：铁皮石斛 生物学性状 糖类含量 

分 类 号：S682.31[农业科学—观赏园艺]