Çok Yıllık Serin Mevsim Buğdaygil Yem Bitkilerinde Yaz Dormansisi

Yıl 2018, , 86 - 91, 28.02.2018

Özlem Önal Aşcı , Ömer Eğritaş

https://doi.org/10.19159/tutad.335512

Öz

Bitkiler bazı
stratejiler geliştirerek olumsuz çevre şartlarında hayatta kalırlar. Bu
stratejilerden birisi de dormansidir. Bu makale, bitkilerin yaz mevsiminde
yaşadıkları yaz dormansisi hakkında bilgi sunmak amacıyla hazırlanmıştır. Yaz
dormansisi bitkilerin yaşadığı bir endo-dormansi türüdür. Fenotipe bakarak
bitkinin endo-dormansi yaşadığını belirlemek oldukça güçtür. Bu nedenle
dormansi türünü doğru belirlemek gerekmektedir. Yapılan çalışmalar sonucunda,
buğdaygiller familyası da dâhil olmak üzere farklı familyalara ait birçok bitki
türünde yaz dormansisi belirlenmiştir. Hem yem bitkileri tarımında üretimi hem
de meraların verimini artırmak için çok yıllık serin mevsim buğdaygil yem
bitkilerinin mutlaka yetiştirilmesi gerekmektedir. Yaz dormansisi yaşayan
bitkilerde toprak üstü aksamda kısmen veya tamamen ölüm yaşanırken, toprak
altındaki meristematik dokular ise canlılıklarını devam ettirmektedirler.
Dolayısıyla bitkiler ekstrem şartlarda hayatta kalabilmektedirler. Ancak yaz
dönemindeki verimleri oldukça düşüktür. Bu nedenle bitkilerin dormansi özelliği
net olarak belirlenmeli ve yetiştirileceği bölge, uygulanacak kültürel işlemler
doğru tercih edilmelidir.

Anahtar Kelimeler

Mera, kuraklık, Poaceae

Summer Dormancy in Perennial Cool-Season Forage Grasses

Öz

Plants survive in unfavorable environmental conditions by developing some strategies. One of these strategies is
dormancy. This article was prepared to provide information about the summer dormancy of plants in summer. Summer
dormancy is a type of endo-dormancy that plants have. It is very difficult to determine that the plant has endo-dormant by
phenotype. For this reason, it is necessary to determine the type of dormancy. As a result of the studies, summer dormancy
was determined in many plant species belonging to different families including Poaceae family. In order to increase both the
production of forage crops and the yield of grasslands, the perennial cool season grasses should be cultivated. While plants
having summer dormancy may lost all or some of the aboveground parts, underground meristematic tissues can continue
their vitality. Therefore, plants can survive under extreme conditions. However, the yields during summer are rather low.
For this reason, dormancy characteristics of the plants should be clearly defined and the cultivation area and cultural
practices should be chosen correctly.

Anahtar Kelimeler

Pasture, drought, Poaceae

Kaynakça

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