The Effect of Increasing Irrigation Rates on the Carbon Isotope Discrimination of Apple Leaves

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F23%3A10176240" target="_blank" >RIV/00027006:_____/23:10176240 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/25271121:_____/23:N0000131

Výsledek na webu

<a href="https://www.mdpi.com/2073-4395/13/6/1623/pdf?version=1686912401" target="_blank" >https://www.mdpi.com/2073-4395/13/6/1623/pdf?version=1686912401</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/agronomy13061623" target="_blank" >10.3390/agronomy13061623</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Effect of Increasing Irrigation Rates on the Carbon Isotope Discrimination of Apple Leaves

Popis výsledku v původním jazyce

C-13 discrimination (Delta C-13) has been used in research as an indicator of water availability in crops; however, few data are available concerning fruit trees. The aim of this study was to examine the effect of irrigation on the Delta C-13 values of apple leaves. We assumed that Delta C-13 would increase with irrigation intensity. The Delta C-13 of apple trees (Malus domestica) cv. &apos;Red Jonaprince&apos; was determined in the years 2019-2022. Leaf samples were collected in spring, in June, at the beginning of the irrigation campaign, and in autumn, in September, following the harvest. The irrigation doses were applied to replenish the water consumption, 0% (ET0), 50% (ET50), 75% (ET75), and 100% (ET100), of the calculated evapotranspiration (ET) levels. In November, the leaves collected from different positions on the shoots were sampled, assuming the Delta C-13 signature would reflect the changes occurring in the water supply during their growth. The irrigation rates had a significant effect on the Delta C-13 of the leaves when the data for the spring and summer months were pooled. On average, Delta C-13 increased from 20.77% and 20.73% for ET0 and ET50, respectively, to 20.80% and 20.95% for ET75 and ET100, respectively. When the data obtained for the spring and summer months were analysed separately, the effect of irrigation was weak (p &lt; 0.043). The Delta C-13 value was always higher for treatment ET100 than treatment ET0, for individual experimental years and terms; however, the differences were minor and mostly insignificant. The leaf position had a strong significant effect on Delta C-13; the values gradually decreased from the leaves growing from two-years-old branches (22.50%) to the youngest leaves growing at the top of the current year&apos;s shoots (21.07%). This order was similar for all the experimental years. The results of the experiment suggest that C-13 discrimination in apples is affected not only by water availability during growth, but also by the use of C absorbed in previous years.

Název v anglickém jazyce

The Effect of Increasing Irrigation Rates on the Carbon Isotope Discrimination of Apple Leaves

Popis výsledku anglicky

C-13 discrimination (Delta C-13) has been used in research as an indicator of water availability in crops; however, few data are available concerning fruit trees. The aim of this study was to examine the effect of irrigation on the Delta C-13 values of apple leaves. We assumed that Delta C-13 would increase with irrigation intensity. The Delta C-13 of apple trees (Malus domestica) cv. &apos;Red Jonaprince&apos; was determined in the years 2019-2022. Leaf samples were collected in spring, in June, at the beginning of the irrigation campaign, and in autumn, in September, following the harvest. The irrigation doses were applied to replenish the water consumption, 0% (ET0), 50% (ET50), 75% (ET75), and 100% (ET100), of the calculated evapotranspiration (ET) levels. In November, the leaves collected from different positions on the shoots were sampled, assuming the Delta C-13 signature would reflect the changes occurring in the water supply during their growth. The irrigation rates had a significant effect on the Delta C-13 of the leaves when the data for the spring and summer months were pooled. On average, Delta C-13 increased from 20.77% and 20.73% for ET0 and ET50, respectively, to 20.80% and 20.95% for ET75 and ET100, respectively. When the data obtained for the spring and summer months were analysed separately, the effect of irrigation was weak (p &lt; 0.043). The Delta C-13 value was always higher for treatment ET100 than treatment ET0, for individual experimental years and terms; however, the differences were minor and mostly insignificant. The leaf position had a strong significant effect on Delta C-13; the values gradually decreased from the leaves growing from two-years-old branches (22.50%) to the youngest leaves growing at the top of the current year&apos;s shoots (21.07%). This order was similar for all the experimental years. The results of the experiment suggest that C-13 discrimination in apples is affected not only by water availability during growth, but also by the use of C absorbed in previous years.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Projekt

<a href="/cs/project/QK1910165" target="_blank" >QK1910165: Moderní postupy v závlahovém režimu ovocných dřevin v podmínkách vodního deficitu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Agronomy-Basel

ISSN

2073-4395

e-ISSN

—

Svazek periodika

13

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

18

Strana od-do

1623

Kód UT WoS článku

001020674600001

EID výsledku v databázi Scopus

2-s2.0-85163978597