İbrahim Hakkı GÜÇDEMİR, Çetin ARCAK, Alptekin KARAGÖZ

Relationship between in situ conserved wild wheat species, Associated plants and soil characteristics

Buğdayın atalarının ekolojileri ve bunlara eşlik eden bitki türlerinin etraflıca bilinmesi, bitki bilimiyle uğraşan bilim adamları için önem taşımaktadır. Bu çalışma Şanlıurfa’nın Ceylanpınar Tarım İşletmesinde bulunan 5 yabani buğday (Aegilops spp. L. ve Triticum spp. L.) akrabası ile bunların bulundukları yerlerin toprak tipleri, çevresel ve dış değişkenlerine yoğunlaşmak üzere uygulanan bir vaka çalışması niteliğindedir. Çalışmanın amacı, alanda bulunan hedef türlerin mevcudiyetini etkileyen temel fiziki koşulların ortaya konmasıdır. Modern buğdayların evrimiyle ilişkili olan aşağıdaki beş yabani buğday türü araştırma materyalini oluşturmuştur: Aegilops speltoides Tausch var. speltoides (keçi otu), Aegilops speltoides Tausch var. ligustica (Savign.) Fiori (keçi otu), Aegilops tauschii Coss. var. meyeri (Griseb. ex Ledeb.) (Tausch keçi otu), Triticum monococcum L. ssp. aegilopoides (Link) Thell. (yabani siyez) ve Triticum turgidum L. ssp. dicoccoides (Körn. ex Asch.& Graebn.) (yabani gernik). Hedef türler ile Poaceae familyası türleri ve eşlik eden otsu bitki türleri arasında ilişki bulunurken, çok yıllık bitkilerde benzer bir ilişki gözlenmemiştir. Taşlılıkla yabani gernik arasında kuvvetli bir ilişki bulunmuştur. Yabani siyezde hafif taşlılık ve hafif otlatmayla, Ae. speltoides ligustica türünde de çok taşlılık ve aşırı otlatma ile ilişkili bulunmuştur.

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