Dynamic Changes of Aluminium Ion in the Sepals and Leaves of Hydrangea macrophylla ‘Bailmer’

doi:10.13304/j.nykjdb.2021.1110

Abstract

Abstract:

Hydrangea macrophylla is an aluminum（Al）-accumulating plant with great ornamental characters. Al ion plays an important role in the sepal bluing， in flower color regulation， as well as in the plant growth and development. Taking ‘Bailmer’ as material，this paper determined the optimum growth temperature and studied the dynamic changes of Al ion in sepals and leaves. The results showed that 23 °C was beneficial for plant growth and uptaking of Al ion in leaves and sepals. The dynamic change trends of Al ion content in the sepals and leaves were similar， which first increased， then decreased， and finally increased. Uptaking rates of Al ion in the sepals and leaves increased rapidly at the early stage， reached to the peak at 12 h， and then decreased rapidly to be stable. The results laid a theoretical foundation for flower color regulation of H. macrophylla.

Key words: Hydrangea macrophylla ‘Bailmer’, temperature, Aluminium ion absorption rates, dynamic chang

摘要：

八仙花（Hydrangea macrophylla）是极具观赏价值的铝积累植物。铝离子作为八仙花花色调控的必要元素之一，对其蓝色花形成和植株的生长发育具有十分重要的作用。以‘Bailmer’为试验材料，确定其最适生长温度，并研究其体内铝离子的动态变化。结果表明，23 ℃有利于‘Bailmer’的生长发育及叶片和萼片对铝离子的吸收；花萼和叶片中铝离子含量的动态变化基本类似，均呈先上升、再下降、再上升的趋势；花萼与叶片的铝离子吸收速率均在前期迅速上升，在12 h时达到最大，而后又迅速降低，并趋于稳定。研究结果为八仙花花色调控奠定了理论基础。

关键词: 八仙花‘Bailmer’, 温度, 铝离子吸收速率, 动态变化

CLC Number:

S682

Zhiyun CHU, Hui QI, Ying LI, Yibing WAN, Zhiyu REN, Chun LIU, Suxia YUAN. Dynamic Changes of Aluminium Ion in the Sepals and Leaves of Hydrangea macrophylla ‘Bailmer’[J]. Journal of Agricultural Science and Technology, 2023, 25(1): 65-71.

褚志云, 祁惠, 李颖, 万一兵, 任志雨, 刘春, 袁素霞. 八仙花‘Bailmer’花萼和叶片内铝离子的动态变化[J]. 中国农业科技导报, 2023, 25(1): 65-71.

Figures/Tables 6

Fig. 1 Al ion content in sepal and leaf of ‘Bailmer’ under different temperaturesNote： Different small letters in the figure indicate significant difference at P<0.05 level.

Fig. 2 Chlorophyll fluorescence parameters in ‘Bailmer’ leaf under different temperaturesNote： Different small letters in the figure indicate significant difference at P<0.05 level.

Table 1 Plant growth index under different temperature

处理温度

Temperature/℃

株高

Plant height/mm

茎粗

Stem thickness/mm

叶长

Leaf length/mm

叶宽

Leaf width/mm

花径

Flower diameter/mm

Fig. 3 Plant growth under the different temperatures

Fig. 4 Dynamic change of Al ion content in sepals and leaves of ‘Bailmer’ after aluminum applicationNote：Different small letters in the figure indicate significant difference at P<0.05 level.

Fig. 5 Dynamic changes of Al ion absorption rate in sepal and leaf of ‘Bailmer’ after aluminum applicationNote： Different small letters in the figure indicate significant difference at P<0.05 level.

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