J 2023

Yield and water relations of two apple cultivars under irrigation

PLAVCOVÁ, Lenka; Martin MÉSZÁROS; Radek JUPA; Klára SCHÁŇKOVÁ; Zuzana KOVALÍKOVÁ et al.

Základní údaje

Originální název

Yield and water relations of two apple cultivars under irrigation

Autoři

PLAVCOVÁ, Lenka; Martin MÉSZÁROS; Radek JUPA; Klára SCHÁŇKOVÁ; Zuzana KOVALÍKOVÁ; Jan NÁMĚSTEK a Aneta MAHROVÁ

Vydání

Irrigation Science, Springer, 2023, 0342-7188

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: 3.100

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/23:00130494

Organizační jednotka

Přírodovědecká fakulta

EID Scopus

Klíčová slova anglicky

MALUS-DOMESTICA BORKH.;TURGOR LOSS POINT;PROLINE;ACCUMULATION;OSMOTIC ADJUSTMENT;DROUGHT TOLERANCE;GAS-EXCHANGE;CROP LOAD;XYLEM;RESPONSES;FRUIT

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 21. 6. 2023 14:06, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Because of an increased incidence of drought, irrigation has become an important agricultural practice in formerly mesic regions. Efcient irrigation scheduling depends on a good knowledge of tree water relations. For three growing seasons, we monitored stem water potential (Ψstem) in two apple tree cultivars (Malus×domestica cv. ‘Red Jonaprince’ and ‘Gala Brookfeld’) with and without irrigation. We also determined xylem potentials at 12% and 50% percent loss of conductivity (Ψ12, Ψ50) and vessel diameters in current-year shoots. To evaluate if trees are capable of osmotic adjustment, we measured turgor loss point (TLP), osmotic potential at full turgor, and the concentrations of organic osmolytes (proline, glucose, sucrose, and sorbitol) in leaves throughout the growing season. We found that Ψstem did not drop below − 1.6 MPa, which is well above the Ψ50 and TLP. Irrigated trees (ETc-100) had slightly higher Ψstem than trees without irrigation (ETc-0). The observed conditions in one of the 3 years resulted in similar yields but smaller fruit sizes of the non-irrigated trees. The triploid cultivar ‘Red Jonaprince’ had typically more negative Ψstem than the diploid cultivar ‘Gala Brookfeld’, but ‘Gala Brookfeld’ exhibited higher limitations in fruit growth during drought and shoot growth during wet periods. Concentrations of all measured osmolytes were higher in leaves of non-irrigated trees of ‘Gala Brookfeld’ and increased during the season, while the pattern was more variable in ‘Red Jonaprince’. In summary, our results indicate that ‘Red Jonaprince’ favours hydraulic efciency against safety, while ‘Gala Brookfeld’ adopts a more conservative growth strategy.