Screening of flower bud differentiation conditions and changes in metabolite content of Phalaenopsis pulcherrima

文献类型： 外文期刊

第一作者： Dong, F.

作者： Dong, F.;Qi, Y.;Wang, Y. N.;Zhu, J.;Wang, C. P.;Ma, L.;Lv, X. H.;Wang, C. Z.;Zhang, J. H.

作者机构：

关键词： Phalaenopsis pulcherrima; Flower bud differentiation; Metabolites

期刊名称：SOUTH AFRICAN JOURNAL OF BOTANY （ 影响因子：2.7； 五年影响因子：2.9 ）

ISSN： 0254-6299

年卷期： 2024 年 171 卷

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收录情况： SCI

摘要： Using the Phalaenopsis pulcherrima (P. pulcherrima) as the test material, the optimal conditions for flower bud differentiation were selected by setting different photoperiods and temperatures. The process of flower bud differentiation was observed, and changes in the content of carbohydrates, hormones, and other metabolites during flower bud differentiation were studied. The results showed that the optimum time of illumination was 16 h. d(-1) and the temperature was 30 degree celsius / 25 degree celsius. According to the characteristics of the flower bud development of P. pulcherrima, the differentiation process can be divided into six periods: the initial differentiation phase, inflorescence primordium differentiation phase, flower primordium differentiation phase, sepal primordium differentiation phase, petal primordium differentiation phase, and column and pollinia differentiation phase. The soluble sugar content in the leaves showed a trend of first increasing and then decreasing. The soluble sugar content was highest 30 days after the treatment, when the differentiation of the inflorescence primordium was completed. The starch content first decreased, then increased, and finally decreased. The starch content was lowest at 30 days of treatment and highest at 35 days. The soluble protein content in the leaves reached a maximum after 30 days of treatment. With the continuous differentiation of flower buds, the soluble protein content showed an overall decreasing trend. The zeatin (ZT) content reached a maximum at day 35, showing an overall decreasing trend from days 35 to 50 and reaching a minimum at day 50. The gibberellin (GA(3)) and auxin (IAA) content first decreased and then increased during the process of flower bud differentiation. The changes in soluble sugar and soluble protein content during flower bud differentiation are consistent, while the changes in GA(3) and IAA are consistent. (c) 2024 The Author(s). Published by Elsevier B.V. on behalf of SAAB. This is an open access article under the CC BY -NC -ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

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