J 2024

Seasonal coordination of aboveground vegetative and reproductive growth and storage in apple trees subjected to defoliation, flower and fruit thinning

PLAVCOVA, Lenka; Radek JUPA; Gunter HOCH; Martin MESZAROS; Klara SCHANKOVA et al.

Základní údaje

Originální název

Seasonal coordination of aboveground vegetative and reproductive growth and storage in apple trees subjected to defoliation, flower and fruit thinning

Autoři

PLAVCOVA, Lenka; Radek JUPA; Gunter HOCH; Martin MESZAROS a Klara SCHANKOVA

Vydání

Trees, Springer, 2024, 0931-1890

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10611 Plant sciences, botany

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 2.100

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/24:00138748

Organizační jednotka

Přírodovědecká fakulta

EID Scopus

Klíčová slova anglicky

Carbohydrates; Dendrometers; Fruit yield; Seasonal dynamics; Storage

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 31. 1. 2025 18:01, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Key messageThe growth rates of current-year shoots, fruits and trunks in apple trees peak sequentially during the growing season. The period of most intense growth coincided with the lowest NSC reserves.AbstractVegetative and reproductive growth and storage are major carbon sinks in fruit trees; however, little is known about their mutual seasonal coordination. In this study, we monitored growth dynamics of trunks, fruits and current-year shoots together with the concentration of non-structural carbohydrates (NSC) in trees subjected to defoliation, early season flower thinning, mid-season fruit thinning and their respective combinations across the season. We found that defoliation had a negative effect on both trunk radial growth and annual fruit yield. Flower and fruit thinning caused lower fruit number per tree, but the individual fruits were larger resulting in a similar annual fruit yield among the treatments. Shoot extension growth was not significantly affected by the defoliation and flower and fruit thinning treatments. The concentration of non-structural carbohydrates was also similar across treatments. Modelled daily growth rates of shoots, fruits and trunks peaked sequentially one after another throughout the growing season with a delay of 15 and 18 days, respectively. The period of most intense growth of tree's organs corresponded well with the lowest NSC reserves and a temporary depletion of starch in 1-year-old branches. Taken together, our study illustrates a tight temporal coordination of major carbon sinks and improves our understanding of sink/source relations of commercially important apple trees.