Effects of Different Regulating Measures on the Floral and Nutritional Physiology of Lemon
文献类型: 外文期刊
作者: Du, Yuxia 1 ; Li, Jinxue 1 ; Dong, Jianmei 1 ; Hu, Chengxiao 2 ; Li, Danping 1 ; Tan, Qiling 2 ; Zhang, Jinzhi 2 ; Li, Jing 1 ; Zhou, Xianyan 1 ; Zhu, Chunhua 1 ; Lai, Xinpu 1 ;
作者机构: 1.Yunnan Acad Agr Sci, Inst Trop & Subtrop Econ Crops, Changqing Rd, Ruili 678600, Peoples R China
2.Huazhong Agr Univ, Coll Hort & Forestry Sci, Minist Educ, Key Lab Hort Plant Biol, Wuhan 430070, Peoples R China
关键词: lemon; paclobutrazol; gibberellin; flowering; fruit quality
期刊名称:AGRONOMY-BASEL ( 影响因子:3.949; 五年影响因子:4.117 )
ISSN:
年卷期: 2022 年 12 卷 10 期
页码:
收录情况: SCI
摘要: Lemon is an important economic crop in the world and can bloom several times each year. The Dehong prefecture of Yunnan province is one of the main lemon-producing areas in China, and is a suitable area for planting high-quality lemons in China. However, the hot and rainy summers in Yunnan are not conducive to flower bud differentiation, which leads to low lemon yield. Therefore, normal flower bud differentiation is important to guarantee lemon production and quality. In this study, we selected some lemon trees for a pot experiment, and we sprayed the lemon leaves with gibberellin and paclobutrazol to regulate lemon flower formation. We set four separate concentration gradients for each regulator: 50, 100, 150, and 200 mg/L. The PBZ concentration gradients were 200, 400, 600, and 1200 mg/L. After the experiment, we determined and analyzed the morphological index and fruit quality of the lemon trees. The results showed that under the same cultivation and management conditions, spraying paclobutrazol substantially inhibited the growth of lemon shoots, increased the fruit setting rate, and improved the fruit yield. However, gibberellin considerably reduced the number of lemon flowering branches and promoted the vegetative growth of the lemons. When the concentration of paclobutrazol was 600 mg/L, the amount of lemon fruits reached the maximum, which remarkably increased the titratable acid and soluble solids contents of the fruit and ultimately increased the fruit quality compared with the control. Altogether, selecting the appropriate concentration of regulators to control the flowering and fruit setting of fruit trees is important and has value in guiding actual production.
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