摘要
采用叶源枝类、部位及采叶期三因子试验设计 ,连续 3a每年 7～ 1 1月每隔 30 d采摘叶片测定银杏雄株的单叶面积、干物质含量、比叶鲜重、比叶干重和类黄酮含量 .结果表明 :银杏 SLFW与类黄酮含量的季节变化表现出相同的趋势 ,并在 1 0月份出现最大值 ;长枝叶片的干物质含量及类黄酮含量显著高于中、短枝 ;1 a生枝叶片的比叶鲜重、比叶干重及单叶面积明显大于多年生枝 ;不同采叶期的叶片干物质含量、比叶鲜重、比叶干重和类黄酮含量差异显著或极显著 ;不同枝类叶片在各个生长发育期的干物质含量不同 .
In male plant of Ginkgo biloba , with the experimental design consisting of three factors, i.e. the type and position of branch grown with leaves and the defoliation date, the single leaf area, content of dry matter, specific leaf fresh weight (SLFW), specific leaf dry weight (SLDW) and flavonoid content of the leaves picked randomly at interval of 30 days from July to November were measured and analysed for three years running. The research results indicated that the seasonal change of SLFW resembled to that of the flavonoid content, both of them had a peak in October; the content of dry matter and flavonoid in the leaf on the long shoot was significantly higher than that on the short shoot; SLFW, SLDW and single leaf area on one\|year\|old shoot were outstandingly larger than that on perennial branch; there were the significant or extremely significant differences at the content of dry matter, SLFW, SLDW and flavonoid content of the leaves among the different defoliation dates, and the content of dry matter from the leaves among the different branch types was different at each stage of growth and development.
出处
《扬州大学学报（自然科学版）》
CAS
CSCD
2000年第4期40-43,共4页
Journal of Yangzhou University：Natural Science Edition
基金
江苏省科委重点科研项目!(BE96 36 6 2 )
