Mikrobiyal Gübre Olarak Kullanılan ve Yabani Bitkilerden İzole Edilen Rhizobium Suşlarının Farklı Sıcaklık Şartlarında Azot Bağlama Potansiyellerinin Araştırılması

Özet

This study was conducted in order to evaluate the symbiotic effectiveness of Rhizobium leguminosarum subsp. viciae strains isolated from
perennial wild vetchs (Vicia cracca) collected from high altitudes (2000-2500 m) in mountains in Erzurum, Eastern Anatolia, Turkey. For this
purpose, 60 isolates were obtained from wild vetchs. Vetch seeds were inoculated with these isolates and grown in pots containing sterile sand
under both low (15 C day/9 C night) and normal (25 C day/22 C night) temperature conditions in a controlled plant growth cabinet. All strains
investigated formed nodules under the normal temperature, but only 38 strains were able to produce nodules at the low temperature. In both normal
and low temperature experiments, generally, all strains producing nodules provided N to the plant, as indicated by shoot dry weight, total N content,
and N fixed. However, strains showed significant differences for almost all parameters measured. Among the strains tested, demonstrated a good
performance on vetch in terms of their high shoot dry matter yields, total N content, N fixed, and symbiotic effectiveness. These results indicated
that effective strains isolated from wild vetchs had potential for use as inoculants on vetch.