GREENHOUSE SCREENING OF RHIZOSPHERE BACTERIA FOR PLANT GROWTH PROMOTING RHIZOBACTERIA AND DELETERIOUS RHIZOBACTERIA OF MAIZE

Öz

A total of 576 bacterial isolates from the maize rhizosphere were tested in greenhouse experiments for growth promoting and deleterious activity towards maize seedlings in the presence of two pathogens. Selected isolates  were further tested in the greenhouse. In most instances, the bacterial isolates had no statistically significant effect on maize plant height. Isolate effects on plant height were inconsistent. Beneficial or deleterious effects on maize plant height due to bacterial inoculation of the seed often were not repeatable in other soils or experiments.

Anahtar Kelimeler

• Maize; bacterial isolates; plant height

MISIR BİTKİSİNDE BİTKİ GELİŞMESİNİ TEŞVİK EDEN VE ENGELLEYEN BAKTERİLERİN SERADA RİZOSFER BAKTERİLERİ KULLANILARAK ORTAYA ÇIKARILMALARI

Öz

Mısır rizosferinden elde edilen 576 bakteri izolatı bitki büyümesini teşvik edici ve zararlı etkileri yönünden serada iki patojenin de bulunduğu topraklarda test edilmiştir. Seçilen izolatlar serada tekrar test edilmiştir. Çoğunlukla bakteri izolatları mısır bitkisinin boyu üzerinde istatistiki bakımdan önemli bir etki göstermemişlerdir. Bitki boyu ile ilgili izolat etkileri tutarsızlık göstermiştir. Tohumların bakteriyle inokulasyonu sonucu mısır bitki boyunda görülen yararlı veya zararlı etkiler başka topraklarda veya denemelerde genellikle tekrar edilememiştir.

 

Anahtar Kelimeler

• Mısır; bakteri izolatı; bitki boyu

Kaynakça

1. BACKMAN, P.A., J.T. Turner, M.A. Crawford, and R.P. Clay. 1984. A new biological seed treatment fungicide for peanuts that increases yield. Highlights Agric. Res. 31: No 1, p.4.
2. BROWN, M.E. 1974. Seed and root bacterization. Ann. Rev. Phytopathol. 12: 181-197.
3. KARAKAYA, A., 1987. Rhizosphere bacteria associated with maize. M.Sc. Thesis. Iowa State University. 75 pp.
4. KARAKAYA, A. and C.A. MART1NS0N. 1995. The effect of some rhizosphere bacteria on development of maize. Tarla Bitkileri Merkez Araştırma Enstitüsü Dergisi. 4 (1): 7-10.
5. KING, E.O., M.K. Ward and D.E. Raney. 1954. Two simple media for the demonstration of pyocyanin and fluorescin. J. Lab. Clin. Med. 44: 501.
6. MISHUSTIN, E.N. and N. NAUMOVA. 1962. Bacterial fertilizers, their effectiveness and mode of action. Transl. Microbiologiya 31: 543-555.
7. SCHROTH, M.N. and J.G. HANCOCK. 1981. Selected topics in biological control. Ann. Rev. Microbiol. 35: 453-476.
8. SCHROTH, M.N. and J.G. HANCOCK. 1982. Disease suppressive soil and root colonizing bacteria. Science 216: 1376-1381.

9. SUSLOW, T.V., J.W. Kloepper, M.N. SCHROTH, and T.J. Burr. 1979. Beneficial bacteria enhance plant growth. Calif. Agric. 33: 15-17.
10. SUSLOW, T.V. and M.N. SCHROTH, 1982. Role of deleterious rhizobacteria as minör pathogens in reducing crop growth. Phytopathology 72: 111-115.
11. WOLDENDORP, J.W. 1978. The rhizosphere as part of the plant-soil system. In Structure and functioning of plant population. Verhandeligen der Koninklijke, Nederlanse Akademie van Weterschappen, Afdeling Natuurk-unde, Twede Reeks, deel 70.
12. WOLLUM, A.G., II. 1982. Cultural methods for soil microorganisms. Pages 781-802. in A.L. Page, ed. Methods of Soil Analysis Part 2, Chemical and Biological Properties. 2nd ed. American Society of Agronomy, Inc. and Soil Science Society of America. Inc. Madison, WI.