摘要
对来自浙江、河南、山东、江苏等银杏产地的 1 3个优良单株 3年生银杏嫁接苗的叶产量、黄酮含量、黄酮的组成成份、内酯含量、内酯的组成成份及黄酮、内酯的年变化规律等进行了比较研究。结果表明 ,不同银杏优良单株间的叶产量、黄酮含量、内酯含量等存在显著差异 ;黄酮和内酯在叶中的含量以 9～ 1 0月最高 ,银杏植株各器官中黄酮的含量以叶最高 ,茎最低 ;在总黄酮中 ,槲皮素所占比例最大 ,其次为山奈酚 ,最后为异鼠李素 ;内酯的组成成份中则以银杏内酯A为最大 ,其次为白果内酯 ,最后为银杏内酯B、银杏内酯C ;根据叶产量、黄酮产量、内酯产量等指标 ,将 1 3个银杏叶用优良单株分成 3类 :优 E4 ,中等 E1、E2 、E5、E6,差 E3 、E7、E8、E10 、W2 、W3 、W4 、W5,即优良单株E4 是采叶园最好的建园材料 ,E1、E2 、E5、E6等次之。
Leaf yield, flavonoid content, terpene lactone content, composition of flavonoid, composition of terpene lactone, seasonal variation of flavonoid, terpene lactone and distribution of flavonoid in 13 3 year old Ginkgo biloba superior trees originated from Zhejiang, Henan, Shandong and Jiangsu Provinces, were studied. The results were as follows: (1)The differences of flavonoid content, terpene lactone content, leaf area and leaf yield for various superior trees were significant; (2)Seasonal variations of flavonoid content and terpene lactone content had the same trend and the order of concentration among quercetin, Kaemplerol and isorhamnetin was quercetin>kaemplerol>isorhamnetin, and the concentrations of ginkgolide A (GA), ginkgolids B (GB), ginkgolide C (GC), and bilobalide (BB). followed the order: GA>BB>GB or GC. The flavonoid content in Ginkgo leaves was highest in September and October, and lowest in June. However, the terpene lactone content was lowest in May, and the highest in September; (3)According to leaf yield, flavonoid yield, terpene lactone yield, 13 superior trees were divided into three types by means of cluster analysis: excellent yield E 4, good yield E 1, E 2, E 5, E 6, poor yield E 3, E 7, E 8, E 10 , W 2, W 3, E 4, E 5; (4)Among stem, root and leaf, the highest flavonoids content was in leaf, and the lowest in stem.
出处
《林业科学》
CAS
CSCD
北大核心
2000年第4期26-31,共6页
Scientia Silvae Sinicae
关键词
银杏
叶用园
优良单株
建园材料
Ginkgo biloba, Orchard of utilizing tree leaf, Superior tree
