Farklı Ağaç Topraklarındaki Mikrobiyal Populasyona İlkbahar - Sonbahar Mevsim Farklılığının Etkisi
Küçük Resim Yok
Tarih
2014
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Kimyasal ve biyolojik açıdan değişken bir yapı gösteren toprağın mikrobiyal populasyonu mevsimsel farklılıklarında etkili olduğu bitki kök salgıları ve toprak üstü yapıların toprak içeriğine karışmasıyla da değişebildiği düşünülmektedir. Bitkinin gelişip büyüdüğü toprağın üst katmanları, iklimsel farklılıklardan kaynaklanan su içeriği, sıcaklık gibi etkilerle dinamik olup, bitkinin yaprak, dal ve meyve gibi toprak üstü yapılarının da toprağa katılarak içeriği değiştirdiği bulunmuştur. Aynı ekolojik toprak parçası üzerinde yer alan farklı ağaç türlerinde mevsimsel farklılıklara bağlı olarak da mikrobiyal populasyonun değişebileceği düşünülmüştür. Bu amaçla aynı bahçe içerisinde yetişen farklı yedi ağaç seçilmiş, sonbahar ve ilkbahar ayları içerisinde bu ağaçların yüzey toprağının farklı bölgelerinden 5-10 cm derinliğe ulaşılacak şekilde örnekler alınmıştır. Alınan örneklerde toplam mikroorganizma, gram negatif bakteri ve sporlu bakteri sayıları (adet/g) kültürel sayım metoduyla tespit edilmiştir. Buna göre sonbahar mevsiminde; toplam mikroorganizma sayısı en fazla elma ağacının toprağında, en az ise çam ağacının toprağında belirlenmiştir. Gram negatif bakteri sayısı açısından en fazla ıhlamur en az kayısı, dut ve elma da, sporlu bakteri sayısı bakımından en fazla dut, en az ise ıhlamur ağacının toprağında belirlenmiştir. İlkbahar mevsiminde ise; toplam mikroorganizma sayısı en fazla elma ağacının toprağında en az ise kayısı ağacının toprağında belirlenmiş olup, gram negatif bakteri sayısı açısından en fazla ceviz en az kayısı ağacının toprağında, sporlu bakteri sayısı en fazla kavak, en az ise dut ağacının toprağında tespit edilmiştir. Genel olarak bakıldığında morfolojik açıdan en zengin populasyon çeşitliliğinin sonbahar mevsiminde görüldüğü belirlenmiştir.
Microbial population of soil and its structure is affected with chemical and biological changes such as plant-root secretions. Upper layer of the soil is exposed to mixture of stems, fruiting bodies and leaves of trees. Seven trees growing at same area were chosen. Their upper layers of the soil were collected from depth 5-10 cm as samples in spring and autumn. Their microbial populations were investigated in order to determine in terms of climate changes. In order to determine the number of the total microorganisms, gram-negative bacteria and sporeforming bacteria (cfu/g) were used by the serial dilution techniques. As a result, the highest numbers of microorganisms from the soil of the apple tree were determined as the total microbial count in the autumn, although the lowest number of microorganisms was obtained from the soil of the pine tree. However, the number of the gram-negative bacteria was the highest in the soil of linden tree, although the number of gram negative bacteria was the lowest in the soil of apricot, mulberry and apple trees. For spore - forming bacterium, the highest number from the mulberry soil and the lowest number from the linden tree have been obtained. In the spring, the highest numbers of microorganisms from the soil of the apple tree were obtained as the total microbial count, although the lowest number of microorganisms was obtained from the soil of the apricot tree. For the number of the gram-negative bacteria was the highest in the soil of walnut tree, although the number of gram negative bacteria was the lowest in the soil of apricot trees. However spore - forming bacterium, the highest number from the soil of the poplar tree and the lowest number from the mulberry tree have been obtained. In general, the rich diversity of the microbial population was shown morphologically in autumn.
Microbial population of soil and its structure is affected with chemical and biological changes such as plant-root secretions. Upper layer of the soil is exposed to mixture of stems, fruiting bodies and leaves of trees. Seven trees growing at same area were chosen. Their upper layers of the soil were collected from depth 5-10 cm as samples in spring and autumn. Their microbial populations were investigated in order to determine in terms of climate changes. In order to determine the number of the total microorganisms, gram-negative bacteria and sporeforming bacteria (cfu/g) were used by the serial dilution techniques. As a result, the highest numbers of microorganisms from the soil of the apple tree were determined as the total microbial count in the autumn, although the lowest number of microorganisms was obtained from the soil of the pine tree. However, the number of the gram-negative bacteria was the highest in the soil of linden tree, although the number of gram negative bacteria was the lowest in the soil of apricot, mulberry and apple trees. For spore - forming bacterium, the highest number from the mulberry soil and the lowest number from the linden tree have been obtained. In the spring, the highest numbers of microorganisms from the soil of the apple tree were obtained as the total microbial count, although the lowest number of microorganisms was obtained from the soil of the apricot tree. For the number of the gram-negative bacteria was the highest in the soil of walnut tree, although the number of gram negative bacteria was the lowest in the soil of apricot trees. However spore - forming bacterium, the highest number from the soil of the poplar tree and the lowest number from the mulberry tree have been obtained. In general, the rich diversity of the microbial population was shown morphologically in autumn.
Açıklama
Anahtar Kelimeler
Gıda Bilimi ve Teknolojisi, Ziraat, Ortak Disiplinler
Kaynak
Türk Tarım - Gıda Bilim ve Teknoloji dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
2
Sayı
2
