中文摘要：

设置3个温度水平与3个干旱胁迫水平的9个处理盆栽试验,研究了银杏叶初生代谢产物可溶性糖、可溶性蛋白质及次生代谢产物黄酮类化合物含量的变化。结果表明：干旱处理促进可溶性糖、可溶性蛋白质的积累,但抑制类黄酮的合成。低温促进银杏叶片可溶性糖及类黄酮的合成,高温抑制类黄酮的合成。胁迫前期,干旱因子是抑制类黄酮合成的首要因素,胁迫后期,低温因子是促进类黄酮合成的首要因素。相关分析表明,干旱胁迫和温度胁迫处理下,可溶性糖含量与类黄酮的相关性不明显,可溶性蛋白质含量与类黄酮含量整体呈显著负相关。

英文摘要：

To explore the relationship between the primary metabolism and the secondary metabolism under adverse situation during the flavonoid accumulation stage of ginkgo leaves. In this paper, we studied three levels of temperatures and three levels of drought stress on soluble sugar, soluble protein and flavonoid content of leaves. The results showed that the accu-mulation of soluble sugar and protein were increased under the drought stress, whereas the flavonoid content decreased un-der the same treatment. Lower temperatures also promoted the accumulation of soluble sugar and flavonoid. The flavonoid content was lower under the high temperature treatment. Drought stress was the main factor restraining flavonoid accumula-tion in early days, but low temperature was the main factor promoting flavonoid accumulation in later days. Correlation anal-ysis indicated that there were not obvious correlations between soluble sugar and flavonoid, but there were significant nega-tive correlations between soluble protein and flavonoid. Advice was that management of drought stress and low temperature was a good method for the output of ginkgo leaves.