Thlaspi L. sensu lato (Turpgiller / Brassicaceae)’nun Bazı Taksonlarında Tohum Musilaj İçerikleri ve Ekolojik Önemi

Yıl 2020, Cilt: 7 Sayı: 1, 47 - 53, 15.04.2020

Cengiz Karaismailoğlu , Osman Erol

Öz

Yedi Thlaspi sensu lato taksonunun (T. arvense, T. kotschyanum, T. perfoliatum, T. annuum, T. praecox subsp. praecox, T. densiflorum ve T. alliaceum) tohumlarında yüzey musilaj hücreleri bulunur ve hidrasyon boyunca miksospermi örtü formasyonunu üretirler. İncelenen taksonlarda musilaj, pektinlerden veya selülozdan oluşur ve musilaj hücreleri tohumlarda farklı anatomik tabakalarda bulunmuştur. Ek olarak, incelenen Thlaspi taksonlarında belirgin, azaltılmış veya düzleştirilmiş kolumella şekillerinde farklılıklar vardı. Çalışma konusu içindeki Thlaspi taksonlarında toprak yapışma kapasiteleri 39 mg ila 271 mg arasında değişmiştir. Musilaj; tohumun dağılmasında ve Thlaspi taksonlarındaki yeni habitatlara yayılmada kilit bir role sahip olabilir.

Anahtar Kelimeler

miksospermi, morfoloji, musilaj, pektin, selüloz, Thlaspi, tohum

Destekleyen Kurum

İstanbul Üniversitesi

Proje Numarası

113.2014-DR-35/26.04

Teşekkür

Bu çalışma İstanbul Üniversitesi ÖYP Birimi tarafından 113.2014-DR-35/26.04 numaralı proje ile desteklenmiştir.

Kaynakça

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