新铁炮百合生长发育过程的一些生理生化变化

The physiological and biochemical changes in bulb development of Lilium formolongi

对新铁炮百合(Lilium.formolongi)生长发育过程中的重要生理生化指标进行了研究。结果表明,新铁炮百合植株的干物率,淀粉,可溶性糖和蛋白质含量在不同生育期有不同的变化格局;鳞茎中的干物质、淀粉呈上升趋势,可溶性糖和蛋白质含量下降;茎叶中的干物质含量增加,淀粉含量在鳞茎成熟期下降,可溶性糖含量变化较小,蛋白质在开花期含量升到最大值;多酚氧化酶(PPO)、过氧化物酶(POD)活性,随着营养生长的加速而不断提高,但随着生殖生长的进程其酶活性逐渐下降。

Some important physiological and biochemical traits of Liliurn formolongi during different development stages were studied. The results indicated that the dry-weight percentage, starch content,sugar content and protein content were different in different development stages. There were increments in dry-weight percentage and starch content and decrements in sugar content and protein content in bulb. There was increment in dry-weight percentage and decrement in starch content during bulb mature stage. There was little change in sugar content in developmental stages. The protein content got its biggest value at bloom stage. The activity of PPO and POD had been increasing in the vegetable growth phase and decreasing in the reproductive growth phase.