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
UT WoS
EID Scopus
Klíčová slova anglicky
MALUS-DOMESTICA BORKH.;TURGOR LOSS POINT;PROLINE;ACCUMULATION;OSMOTIC ADJUSTMENT;DROUGHT TOLERANCE;GAS-EXCHANGE;CROP LOAD;XYLEM;RESPONSES;FRUIT
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.