Plant Physiology and Biochemistry2022，Vol.17411.DOI:10.1016/j.plaphy.2022.01.029

Exogenous gibberellin treatment improves fruit quality in self-pollinated apple

Liu, Zhi Song, Guozhu Li, Wei Lv, Tianxing Li, Jun Wang, Dongmei Li, Yang Wu, Chuanbao Li, Tianzhong Liu, Chunsheng Xiao, Pengshuai Jiang, Feng Wang, Shengyuan
Plant Physiology and Biochemistry2022，Vol.17411.DOI:10.1016/j.plaphy.2022.01.029
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  • NSTL
  • Elsevier

Exogenous gibberellin treatment improves fruit quality in self-pollinated apple

Liu, Zhi 1Song, Guozhu 2Li, Wei 3Lv, Tianxing 1Li, Jun 2Wang, Dongmei 1Li, Yang 3Wu, Chuanbao 3Li, Tianzhong 3Liu, Chunsheng 3Xiao, Pengshuai 3Jiang, Feng 3Wang, Shengyuan3
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作者信息

  • 1. Liaoning Acad Agr Sci
  • 2. Liaoning Green Agr Technol Ctr
  • 3. China Agr Univ
  • 折叠

Abstract

Although a few apple (Malus x xdomestica) varieties are self-compatible, little is known about the differences in fruit quality between self- and cross-pollinated apple. In our current study, we compared the fruit quality of self-pollinated apple plants (cultivar 'Hanfu') in self-pollination or cross-pollinated by another cultivar 'Qinguan'. Analysis of fruit quality revealed substantial differences in the external qualities between self-and cross-pollinated apple fruit, but not in the internal qualities. Fruits harvested from self-pollinated 'Hanfu' were smaller and more asymmetrical than those harvested from the cross-pollinated plants. We developed a mathe-matical model describing how seed number and distribution affect fruit growth. According to this model, the fewer the seeds, the greater the force released from the seeds and the more asymmetrical the fruit. Detection of endogenous hormone and the associated gene expression revealed that gibberellin (GA) levels and GA trans-porter gene expression on the seedless side were significantly lower than those on the seeded side. Analysis of fruit pectin methylesterase activity and demethylated pectin levels indicated that the lack of GA limits fruit cell wall extension. Additionally, spraying the self-pollinating plants with gibberellic acid increased the fruit weight and lowered the proportion of asymmetrical fruit, recovering the exterior fruit quality to that of the cross-pollinated fruit. Furthermore, exogenous GA treatment increased the wax layer thickness and reduced the fruit water loss rate, leading to a dramatic improvement in fruit storage capacity. Therefore, exogenous GA treatment could be used to ensure regular fruit production of self-pollinated 'Hanfu'.

Key words

Apple/Asymmetrical fruit/Gibberellin/Exogenous hormone treatment/Seed/Self-pollination/POLLEN-TUBE GROWTH/SEED NUMBER/SET/COMPATIBILITY/ALMOND/CULTIVARS/WEIGHT

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出版年

2022
Plant Physiology and Biochemistry

Plant Physiology and Biochemistry

SCI
ISSN：0981-9428
被引量4
参考文献量34
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