To address the problems of artificial apple thinning, which are time-consuming, labor-intensive, and inefficient, this study examined the fruit thinning effect and mechanism of spraying metamitron at the young fruit stage on Gala apples grown on dwarfing inter-stocks. The results showed that spraying 500mg·Lmetamitron twice, at 3 mm and 9 mm fruit diameters, significantly reduced the fruit setting rate of inflorescences and flowers, thereby increasing the single fruit ratio. The photosynthetic parameter (Pn) and chlorophyll fluorescence parameters (Fv/Fm, ΦPSII, qP, and NPQ) were significantly inhibited by the treatment, resulting in a noticeable decrease in soluble sugar content. The treatment significantly increased abscisic acid (ABA) content and decreased the (Z+GA+IAA)/ABA ratio. These results suggest that metamitron effectively thins apple fruit, with its mechanism likely related to damage to the leaf PSII reaction center structure, obstruction of photosynthetic electron transfer, insufficient soluble carbohydrate supply due to reduced photosynthetic rate, increased ABA content, and decreased auxin hormone/ABA ratio.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11891214 | PMC |
| http://dx.doi.org/10.3389/fpls.2025.1527183 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Analysis of fruit thinning effect and underlying mechanism using metamitron on 'Gala' apples.
Front Plant Sci
February 2025
Apple Breeding and Cultivation, Shandong Institute of Pomology, Tai'an, China.
To address the problems of artificial apple thinning, which are time-consuming, labor-intensive, and inefficient, this study examined the fruit thinning effect and mechanism of spraying metamitron at the young fruit stage on Gala apples grown on dwarfing inter-stocks. The results showed that spraying 500mg·Lmetamitron twice, at 3 mm and 9 mm fruit diameters, significantly reduced the fruit setting rate of inflorescences and flowers, thereby increasing the single fruit ratio. The photosynthetic parameter (Pn) and chlorophyll fluorescence parameters (Fv/Fm, ΦPSII, qP, and NPQ) were significantly inhibited by the treatment, resulting in a noticeable decrease in soluble sugar content.
View Article and Find Full Text PDFEffects of sophorolipids and coconut wax incorporation on the physical, structural, and antibacterial properties of cellulose nanofibers-based Pickering emulsion for cherry tomato preservation.
Food Chem
May 2025
Department of Pharmaceutical Science and Engineering, School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; Intelligent Manufacturing Technology Institute of HFUT, Hefei 230000, China. Electronic address:
A novel acidic sophorolipid-enhanced cellulose nanofiber-based coconut wax Pickering emulsion (ASL-CCPE) using cellulose nanofibers (CNF) as a stabilizer, lactonic sophorolipids (LSL) as an antimicrobial agent, and acidic sophorolipids (ASL) as a co-stabilizer were developed. Through optimization of the oil phase type, oil-to-water ratio, and ASL content, the emulsion exhibited shear-thinning behavior and elastic gel characteristics, making it suitable for coating applications. After 182 days of storage at room temperature, the emulsion's droplet size remained uniform, with no significant flocculation observed.
View Article and Find Full Text PDFFruit size prediction of tomato cultivars using machine learning algorithms.
Front Plant Sci
January 2025
Research Center for Agricultural Robotics, National Agricultural and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan.
Early fruit size prediction in greenhouse tomato ( L.) is crucial for growers managing cultivars to reduce the yield ratio of small-sized fruit and for stakeholders in the horticultural supply chain. We aimed to develop a method for early prediction of tomato fruit size at harvest with machine learning algorithm, and three machine learning models (Ridge Regression, Extra Tree Regrreion, CatBoost Regression) were compared using the PyCaret package for Python.
View Article and Find Full Text PDFIs the European regulatory model for predicting worker exposure conservative? Comparison of predicted and measured under usual working conditions exposures in fruit growing.
Environ Res
April 2025
INSERM, UMR1086-Cancers et Préventions, Centre François Baclesse, Caen, France; Université Caen Normandie, Caen, France; Centre de Lutte Contre Le Cancer François Baclesse, 3 avenue du Général Harris, 14000, Caen, France.
Introduction: Pesticide exposure increases the risk of chronic disease among farmers. Understanding exposure is necessary for epidemiological and regulatory purposes. In Europe, worker exposure is assessed during the registration process using the OPEX model, which is based on a limited number of studies, often unpublished and carried out by pesticide companies.
View Article and Find Full Text PDFProtective effect of resveratrol on retinal damage in glaucoma: a systematic review and meta-analysis of preclinical studies.
Front Pharmacol
January 2025
Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, China.
Introduction: Resveratrol, a polyphenolic compound commonly found in natural plants and fruits, exhibits potential in preventing optic nerve damage in glaucoma, as indicated by several animal studies. However, there is presently a dearth of relevant evidence available for comprehensive summarization.
Methods: In this study, we conducted an extensive search across 7 electronic databases, encompassing all pertinent animal studies for a systematic review and meta-analysis.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!