Azospirillum brasilense ve iki Rhizobium türünün bazı yaygın fasulye (Phaseolus vulgaris L.) çeşitlerinde nodulasyona etkisi

Bu çalışmanın amacı, Azospirillum ve Rhizobium ikili aşılamasının fasulyenin nodülasyonundaki sinerjistik etkisinin fasulye çeşitlerinden bağımsız olup olmadığını test etmektir. İki faktör (Azospirillum brasilense Sp7 ve Rhizobium yoğunlukları) içeren, genelleştirilmiş tesadüf blokları (fasulye çeşitleri) deneme desenine göre düzenlenmiş 3 tekrarlı bir saksı denemesi kurulmuştur Rhizobium (Rhizobium etli ve Rhizobium tropici karışımı) inokulasyonu, $10^6$ kob (koloni oluşturan birim) $ml^{-1}$ seviyesinde, tüm nodülasyon verilerini (kök sisteminin ilk 5 cm 'lik kısmında, ilk 5 cm 'lik kısmın dışında kalan bölgedeki ve toplam nodul sayısı ve ağırlığı) artırmıştır (p< 0.05). Ancak, Rhizobium seviyesinin daha fazla artırılması, kökün ilk 5 cm 'lik kısmındaki nodul sayısı hariç nodülasyon verilerinde LSD testine göre fark yaratmamıştır (p

The effects of Azospirillum brasilense and two Rhizobium species on the nodılation of bean (Phaseolus vulgaris L.) cultivars

The objective of this study is to determine whether the synergistic effect of Azospirillum and Rhizobium double inoculation on nodulation in common bean is additive with respect to bean cultivar. A pot experiment, designed as a generalized randomized block (bean cultivars) with 2 factors (Azospirillum brasilense Sp7 density and Rhizobium density) and 3 replications, was conducted. Rhizobium (a mixture of Rhizobium etli and Rhizobium tropici) inoculation at $10^6$ cfu $ml^{-1}$ increased all nodulation values (nodule number and dry weight in the first 5 cm of root system, the root system excluding the first 5 cm and total root) at 5 % significance level. However, increasing the Rhizobium density further did not change the nodulation parameters except for the nodule number in the top 5 cm of root system at the 5 % significance level as per the LSD test. Azospirillum increased nodule weights (p<0.05). Based on the LSD tests, the best cultivar in terms of nodulation was şeker (p<0.05). The population of inoculated microbes probably reached an equilibrium level by time regardless of the initial cell density in inoculants. The plants supported only a limited number of nodules. Therefore, increasing the Rhizobium cell density in inoculanl above certain levels is not suggested in terms of nodulation. The results of this study indicated that Azospirillum could provide the nodules with more carbon to function by affecting the plant growth.

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Selçuk Üniversitesi Ziraat Fakültesi Dergisi (:Selçuk Tarım ve Gıda Bilimleri Dergisi)-Cover
  • ISSN: 1300-5774
  • Yayın Aralığı: Yılda 3 Sayı
  • Başlangıç: 2018
  • Yayıncı: Selçuk Üniv. Ziraat Fak.
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