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Removal of the main inflorescence to induce reflowering of loquat

文献类型： 外文期刊

作者： Peng, Jiangrong 2 ; Li, Wenkun 2 ; Yuan, Yuan 1 ; Han, Zhiqiang 3 ; Cao, Yunpeng 3 ; Shahid, Muhammad Qasim 4 ; Zhang, Zhike 2 ; Gao, Yongshun 2 ; Lin, Shunquan 2 ; Jiang, Yuanyuan 1 ;

作者机构： 1.Shaoguan Univ, Henry Fok Coll Biol & Agr, Shaoguan 512005, Guangdong, Peoples R China

2.South China Agr Univ, Coll Hort, State Key Lab Conservat & Utilizat Subtrop Agrobi, Guangzhou 510642, Peoples R China

3.Cent South Univ Forestry & Technol, Key Lab Cultivat & Protect Nonwood Forest Trees, Minist Educ, Changsha 410004, Peoples R China

4.South China Agr Univ, Coll Agr, Guangzhou 510642, Peoples R China

5.Beijing Engn Res Ctr Strawberry, Beijing 100093, Peoples R China

6.Beijing Acad Forestry & Pomol Sci, Beijing 100093, Peoples R China

关键词： Eriobotrya japonica; Reflowering; Flowering time; Cutting; Production cycle

期刊名称：HORTICULTURAL PLANT JOURNAL （ 影响因子：4.24； ）

ISSN： 2095-9885

年卷期： 2022 年 8 卷 1 期

页码：

收录情况： SCI

摘要： Loquat (Eriobotrya japonica Lindl.) is an evergreen fruit tree species of the Rosaceae, and its unique flowering time greatly hinders its production. To explore the artificial regulation of loquat flowering time, we removed the main inflorescence (by cutting it) to induce reflowering. For different loquat tree cultivars with different stages, the inflorescence was removed by cutting the main floral axis at two alternative positions: the upper or the lower position beneath the inflorescence, and it was found that the proportion of reflowering resulting from removing the upper position of the main floral axis of yellow-flesh loquat cultivars during the full-bloom stage was the highest. In addition, compared with those of the normal-growing panicles, the number of flower buds and branch axes of the reflowering panicles decreased significantly after cutting. Importantly, these newly produced inflorescences flowered 2-4 months later than normal-growing inflorescences did, effectively prolonging both the flowering and fruiting time. In addition, qRT-PCR results showed that EjFT1, EjFT2, EjAP1-1 and EjAP1-2 were highly expressed in the floral axis. These findings highlighted a new method for extending the production cycle of loquat and provided a reference for the flowering regulation of loquat and other economically important fruit tree species.

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