Rootstock vigor dictates the canopy light environment that regulates metabolite profile and internal fruit quality development in peach.

Autor: Pieper JR; Department of Horticulture and Landscape Architecture, Colorado State University, Fort Collins, CO, 80523, USA., Anthony BM; Department of Horticulture and Landscape Architecture, Colorado State University, Fort Collins, CO, 80523, USA., Chaparro JM; Department of Horticulture and Landscape Architecture, Colorado State University, Fort Collins, CO, 80523, USA., Prenni JE; Department of Horticulture and Landscape Architecture, Colorado State University, Fort Collins, CO, 80523, USA., Minas IS; Department of Horticulture and Landscape Architecture, Colorado State University, Fort Collins, CO, 80523, USA. Electronic address: ioannis.minas@colostate.edu.
Jazyk: angličtina
Zdroj: Plant physiology and biochemistry : PPB [Plant Physiol Biochem] 2024 Mar; Vol. 208, pp. 108449. Date of Electronic Publication: 2024 Feb 22.
DOI: 10.1016/j.plaphy.2024.108449
Abstrakt: Five rootstock cultivars of differing vigor: vigorous ('Atlas™' and 'Bright's Hybrid® 5'), standard ('Krymsk® 86' and 'Lovell') and dwarfing ('Krymsk® 1') grafted with 'Redhaven' as the scion were studied for their impact on productivity, mid-canopy photosynthetic active radiation transmission (i.e., light availability) and internal fruit quality. Αverage yield (kg per tree) and fruit count increased significantly with increasing vigor (trunk cross sectional area, TCSA). Α detailed peach fruit quality analysis on fruit of equal maturity (based on the index of absorbance difference, I AD ) coming from trees with equal crop load (no. of fruit cm -2 of TCSA) characterized the direct impact of rootstock vigor on peach internal quality [dry matter content (DMC) and soluble solids concentration (SSC)]. DMC and SSC increased significantly with decreasing vigor and increasing light availability, potentially due to reduced intra-tree shading and better light distribution within the canopy. Physiologically characterized peach fruit mesocarp was further analyzed by non-targeted metabolite profiling using gas chromatography mass spectrometry (GC-MS). Metabolite distribution was associated with rootstock vigor class, mid-canopy light availability and fruit quality characteristics. Fructose, glucose, sorbose, neochlorogenic and quinic acids, catechin and sorbitol were associated with high light environments and enhanced quality traits, while sucrose, butanoic and malic acids related to low light conditions and inferior fruit quality. These outcomes show that while rootstock genotype and vigor are influencing peach tree productivity and yield, their effect on manipulating the light environment within the canopy also plays a significant role in fruit quality development.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Masson SAS. All rights reserved.)
Databáze: MEDLINE
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