论文部分内容阅读
从一九七九年三月至翌年三月期间,涉及六个无性系的四十多次所取的一百八十八个样木的测定结果如下: 一、茶树体内单糖含量低于双糖含量。单糖与双糖的比,成熟叶片平均为(1:3.24)0.31,一芽二叶嫩梢为(1:4.45)0.22。二、成龄茶树越冬老叶在春茶萌发至采摘初期单糖增加,双糖减少,糖总量也下降;发芽早的品种单糖增加少,双糖降低最多,因而糖总量亦大幅度下降。这可能是因发芽早的品种取样时单糖已大量用于新芽萌发伸育,因此耗损大量贮藏物质而致使双糖为主的糖总量却下降,发芽较迟的,这一过程正在强烈的进行之中。三、成龄茶树各季成熟叶片,单糖含量以秋梢叶最高,夏梢叶最低,春梢叶居中;双糖含量春梢叶最高,夏梢叶次之,秋梢叶最低。四、成龄茶树越冬期间,春夏秋梢上各段成熟叶片单糖、双糖和糖总量从秋——冬随气温降低而增加,冬——翌春随气温回升而减少。峰值出现在元月。单糖春夏秋叶增加比率基本接近,而减少的比率稍有不同;双糖则春夏叶增加比率较大,而秋叶增加比率较小,减少又以秋叶最迅速。淀粉含量春叶仍在增加中,夏秋叶则有所下降。五、萌发新梢比驻芽新梢下的成熟叶片光合作用强,而且糖总量也随之增加;无论那类新梢上面第一叶比下部第三叶光合作用强,糖总量也增加得多。六、光合作用强的成熟叶片,单糖增加较少而双糖增加较多;一芽二叶等采摘嫩梢糖分含量与光合作用强度的关系与成熟叶片有相反的趋势。
From March 1979 to March next year, the test results of more than 40 samples of more than 40 samples taken from six clones were as follows: First, the content of monosaccharides in tea plants was lower than that of double Sugar content. The ratio of monosaccharide and disaccharide, the average mature leaves (1: 3.24) 0.31, a shoot two leaves fresh shoots (1: 4.45) 0.22. Second, old overwintering tea trees in the spring of early spring to the early plucking monosaccharide increased sugar, reducing sugar, total sugar also decreased; early budding varieties increased less single sugar, reducing the most sugar, so the total sugar is also significantly decline. This may be due to early budding varieties of monosaccharides sample has been used in sprouting a large number of germination, so consume a large amount of stored material and the resulting disaccharide-based total sugar has declined, the late germination, the process is strong In progress. Third, the mature leaves of mature tea trees in each season, the content of monosaccharides was the highest in autumn leaves, the lowest in summer leaves, and the middle of spring leaves. The content of disaccharide in spring was the highest, the leaves in summer were the second, and the leaves in autumn were the lowest. Four, adult tea trees during the winter, the spring and summer on the mature leaves of each segment of monosaccharides, disaccharides and total sugar from autumn to winter with the temperature decreases and winter - next spring with the temperature rise and decrease. The peak appears in January. The increase rate of monosaccharides in spring, summer and autumn was basically the same, but the rate of decrease was slightly different. The disaccharides increased in spring and summer, while the rate of increase in autumn leaves was smaller. The starch content of spring leaves is still increasing, summer and autumn leaves are declining. The germination shoots had stronger photosynthesis than the mature shoots under bud shoots, and the total amount of sugar also increased. No matter the first leaf above the shoots had higher photosynthesis than the lower third leaf, the total sugar also increased Much more. Sixth, the strong photosynthesis of mature leaves, monosaccharides increased less and more double sugar increased; shoots buds and other picking tender sugar content and photosynthesis intensity and mature leaves have the opposite trend.