Ming Zhao , Haiwang He , Peng Wu , Fang Long , Yu Zou , Tianli Mo , Xiang Huang

Bio-technology Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, 530007, China
Author    Correspondence author
International Journal of Horticulture, 2021, Vol. 11, No. 2   doi: 10.5376/ijh.2021.11.0002
Received: 01 Jul., 2021    Accepted: 06 Jul., 2021    Published: 16 Jul., 2021

This article was first published in Molecular Plant Breeding in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Zhao M., He H.W., Wu P., Long F., Zou Y., Mo T.L., and Huang X., 2021, Exogenous polyazole (PP₃₃₃) regulated flower physiology to promote early bud extraction of Pisang Awak (ABB), International Journal of Horticulture, 11(2): 1-7 (doi: 10.5376/ijh.2021.11.0002)

In this study, the first and second harvesting Pisang Awak in the field were sprayed with different dosage of paclobutrazol in order to analyze the mechanism of its induction of flowering. The results showed that there was no significant difference in the total number of newly extracted leaves between treatments. The first harvesting was 3.0 g/plant, and the second one was 2.0 g/plant. The pumping speed of leaves is the fastest and the accumulation of leaves number is the earliest. The 3.0 g/plant treatment of first harvesting Pisang Awak had the earliest bud extraction stage, and the bud extraction rate reached 62.5% at 170 days after treatment, about 40 days earlier than control group. Within the range of 1.0~5.0 g/plant, PP₃₃₃ promoted carbohydrate synthesis in leaves of Pisang Awak, significantly reduced the accumulation of nitrogen, significantly increased the carbon-nitrogen ratio (C/N), and significantly reduced the contents of GA₃ and IAA in the leaves. The results showed that the exogenous polyazole could accelerate the pumping speed of leaves, promote flowering and early bud extraction by regulating the distribution of carbon and nitrogen nutrients and the content of endogenous hormones, thus providing technical guidance for the management of early bud extraction culture of Pisang Awak.

Paclobutrazol; Flowering; Endogenous hormone; Carbon and nitrogen nutrient; Pisang Awak