Şaraplık Üzümlerde Kuraklığa Dayanıklılık: Yaprak Mikro Besin Dinamikleri Üzerindeki Genotipik Etki

Öz

Bu çalışmada, iki yaşındaki yerli ve yaygın olarak bilinen asma çeşitlerinin yapraklarının mikro besin içeriğinin farklı su stresi seviyelerindeki değişimleri incelenmeyi amaçlanmıştır. Sekiz şaraplık üzüm çeşidi (‘Adakarası’, ‘Papazkarası’, ‘Karasakız’, ‘Karalahana’, ‘Yapıncak’, ‘Vasilaki’, ‘Cabernet Sauvignon’ ve ‘Sauvignon Blanc’) saksılarda kendi kökleri üzerinde yetiştirilmiş ve kullanılabilir su kapasitesinin (AWC) %100, %75, %50, %25’i ve hiç sulama yapılmayan koşul olmak üzere beş farklı sulama uygulamasına tabi tutulmuştur. Deneme, yarı kontrollü koşullarda, bilgisayar kontrollü bir besleme ve sulama sistemi kullanılarak Mayıs-Eylül ayları arasında, iki yıl üst üste yürütülmüştür. Bulgular, Na elementi hariç tüm mikro besin elementlerinin yaprak dokularındaki konsantrasyonlarının çalışmanın ikinci yılında arttığını ortaya koymuştur. Yapraklardaki mikro besin elementlerinin KSK seviyelerine tepkisi, sulama rejiminden ziyade çeşitlerin genetik özelliklerinden etkilenmiştir. Ayrıca, mikro besin elementleri düzeyleri arasında anlamlı korelasyonlar tespit edilmiştir.

Anahtar Kelimeler

• Su kısıtı
• yerli çeşitler
• sulama
• mikro elementler

Drought Resilience in Wine Grapes: Genotypic Influence on Leaf Micronutrient Dynamics

Öz

This study aimed to examine variations in the micronutrient content of leaves in two-year-old indigenous and widely recognized grapevine cultivars under different levels of water stress. Eight wine grape cultivars (‘Adakarası,’ ‘Papazkarası,’ ‘Karasakız,’ ‘Karalahana,’ ‘Yapıncak,’ ‘Vasilaki,’ ‘Cabernet Sauvignon,’ and ‘Sauvignon Blanc’) were grown in pots as own-rooted plants and subjected to five distinct irrigation treatments—100%, 75%, 50%, and 25% of available water capacity (AWC), as well as a no-irrigation condition. The experiment was conducted over two consecutive years, from May to September, using a computer-controlled nutrition and irrigation system under semi-controlled conditions. The findings revealed that, with the exception of Na, all micronutrient concentrations in leaf tissues increased in the second year of the study. The response of leaf micronutrient content to varying AWC levels was predominantly influenced by the cultivars' genotypic characteristics rather than the irrigation regime. Additionally, significant correlations were observed among micronutrient levels.

Anahtar Kelimeler

• Water shortage
• indigenous cultivars
• irrigation
• micro elements

Kaynakça

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