| GA3对杨梅叶片木质素水平及其相关酶活性和成花的影响 |
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| 引用本文： | 李兴军,李三玉,吕均良,汪国云.GA3对杨梅叶片木质素水平及其相关酶活性和成花的影响[J].园艺学报,2001,28(2):156-158. |
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| 作者姓名： | 李兴军 李三玉 吕均良 汪国云 |
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| 作者单位： | ( 浙江大学农业与生物技术学院园艺系, 杭州310029; 浙江省余姚市林业局, 余姚315400) |
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| 摘 要： | ‘荸荠种’杨梅小年树花芽孕育初期, 苯丙氨酸解氨酶(PAL) 活性首先达到高峰; 之后多酚氧化酶(PPO) 活性出现高峰。花芽孕育盛期过氧化物酶(POD) 活性达到高峰, 且与木质素积累到最大值相一致。花芽发端期间, POD活性和木质素水平均降低。GA3处理降低了花芽孕育期间PAL、PPO 和POD 的活性, 导致木质素合成滞缓, 抑制花芽发端和降低成花率。
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| 关 键 词： | 杨梅 花芽分化 木质素 酶活性 赤霉素 |
| 文章编号： | 0513-353X(2001)02 -0156-03 |
| 修稿时间： | 2000年6月6日 |
Effects of Gibberellin3
on Leaf Lignin levels |
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| Li Xingjun.Effects of Gibberellin3
on Leaf Lignin levels[J].Acta Horticulturae Sinica,2001,28(2):156-158. |
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| Authors: | Li Xingjun |
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| Institution: | (Department of Horticulture, College of Agriculture and Biotechnology, Zhej iang University, Hangzhou 310029; Foresty Bureau of Yuyao , Yuy’ao 315400) |
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| Abstract: | Off year trees of ‘Biji’ bayberry were used to determine the effects of GA3 spraying on lignin level and its correlated enzymes activities in leaves during the period of flower bud physiological differentiation. At the initial stage of flower bud physiological differentiation, the activity of PAL increased to maximum, then followed by the activity of PPO. At the peak of flower bud physiological differentiation, both the activity of POD and the level of lignin increased to maximum. During the period of flower initiation, both the activity of POD and the content of lignin decreased. The treatment with GA3 spraying inhibited the activities of PAL, PPO and POD, slowed down the biosynthesis of lignin, surppressed the differentiation of flower buds and almost completely prevented the formation of flower bud. We concluded that GA3 might inhibit the formation of flower bud by dropping down the accumulation of lignin. |
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| Keywords: | Myrica rubra Bieb et Zucc Bayberry (Myrica rubra Bieb et Zucc Flower bud physiological differentiation Lignin Enzemy activity 3 |
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