J 2021

Simulating organ biomass variability and carbohydrate distribution in perennial fruit crops: a comparison between the common assimilate pool and phloem carbohydrate transport models

ZHU, J.Q., F. GOU, G. ROSSOUW, F. BEGUM, Michael HENKE et. al.

Základní údaje

Originální název

Simulating organ biomass variability and carbohydrate distribution in perennial fruit crops: a comparison between the common assimilate pool and phloem carbohydrate transport models

Autoři

ZHU, J.Q., F. GOU, G. ROSSOUW, F. BEGUM, Michael HENKE (276 Německo, garant, domácí), E. JOHNSON, B. HOLZAPFEL, S. FIELD, A. SELEZNYOVA a S.P. LONG

Vydání

IN SILICO PLANTS, OXFORD, OXFORD UNIV PRESS, 2021, 2517-5025

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10611 Plant sciences, botany

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Kód RIV

RIV/00216224:14740/21:00124250

Organizační jednotka

Středoevropský technologický institut

UT WoS

000745293200007

Klíčová slova anglicky

Carbohydrate allocation; carbohydrate transport; fruit variation; functional-structural plant model; GrapevineXL; phloem carbohydrate concentration; within-plant variation

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 22. 2. 2022 17:18, Mgr. Pavla Foltynová, Ph.D.

Anotace

V originále

Variability in fruit quality greatly impedes the profitability of an orchard. Modelling can help find the causes of quality variability. However, studies suggest that the common assimilate pool model is inadequate in terms of describing variability in organ biomass. The aim of the current study was to compare the performances of the common assimilate pool and phloem carbohydrate transport models in simulating phloem carbohydrate concentration and organ biomass variability within the whole-plant functional-structural grapevine (Vitis vinifera) model that we developed previously. A statistical approach was developed for calibrating the model with a detailed potted experiment that entails three levels of leaf area per vine during the fruit ripening period. Global sensitivity analysis illustrated that carbohydrate allocation changed with the amount of leaf area as well as the limiting factors for organ biomass development. Under a homogeneous canopy architecture where all grape bunches were equally close to the carbohydrate sources, the common assimilate pool and phloem transport models produced very similar results. However, under a heterogeneous canopy architecture with variable distance between bunches and carbohydrate sources, the coefficient of variation for fruit biomass rose from 0.01 to 0.17 as crop load increased. These results indicate that carbohydrate allocation to fruits is affected by both the size of crop load and fruit distribution, which is not adequately described by the common assimilate pool model. The new grapevine model can also simulate dynamic canopy growth and be adapted to help optimize canopy architecture and quality variability of other perennial fruit crops.

Návaznosti

EF16_026/0008446, projekt VaV
Název: Integrace signálu a epigenetické reprogramování pro produktivitu rostlin