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试验以刚开花的3年生巨峰葡萄实生苗为材料,分析其童区、转变区及成年区叶片中核酸、半乳糖醛酸和可溶性糖含量的变化.结果表明:每克鲜重叶片中RNA含量由童区至转变区急剧上升达最大值,在转变区保持在较高水平上,开花以上节位其含量降低,总核酸含量的变化也是如此;RNA/DNA比值在刚进入转变区达峰值,然后逐渐降低;半乳糖醛酸含量在童区和成年区均较低,在转变区出现最大值;非还原糖含量随阶段发育的提高而增加,在成年区大量开花部位降低,近植株顶端无花序部位复又增加;还原糖含量在进入转变区时达最大值,然后迅速降低,在转变区及成年区处于较低水平.
The results showed that the content of RNA per gram of fresh weight of leaves was significantly higher than that of the control (P <0.05), and the changes of the contents of nucleic acid, galacturonic acid and soluble sugar in leaves of young, From the Tong District to the transitional area, the ratio of RNA to DNA reached its maximum at the highest level and remained at a relatively high level in the transitional area. And then decreased gradually. The content of galacturonic acid was lower in Tong and adult areas, and reached the maximum in the transition zone. The content of non-reducing sugars increased with the increase of stage development, but decreased in the adult flowering areas. Inflorescence complex increased again; reducing sugar content reached the maximum when entering the transformation zone, and then rapidly decreased in the transition zone and adult zone at a low level.