Effect of an auxin precursor tryptophan and Azotobacter inoculation on yield and chemical composition of potato under fertilized conditions

References

• Apte , R. and Shende , S.T. 1981 . Studies on Azotobacter chroococcum. IV. Seed bacterization with strains of Azotobacter chroococcum and their effect on crop yields . Zentrbl. Bakteriol. Abt. , 11 ( 136 ) : 637 – 640 .
   Google Scholar
• Arshad , M. and Frankenberger , W.T. Jr. 1991 . “ Microbial production of plant hormones ” . In The Rhizosphere and Plant Growth , Edited by: Keister , D.L. and Cregan , P.B. 327 – 334 . Dordecht, , The Netherlands : Kluwer Academic Publishers .
   Google Scholar
• Arshad , M. and Frankenberger , W.T. Jr. 1993 . “ Microbial production of plant growth regulators ” . In Soil Microbial Ecology , Edited by: Metting , F.B. Jr. 307 – 347 . New York, NY : Marcel Dekker, Inc. .
   Google Scholar
• Azcon , R. and Barea , J.M. 1975 . Synthesis of auxins, gibberellins and cytokinins by Azotobacter vinelandii and Azotobacter beijerinckii related to effects produced on tomato plants . Plant Soil , 43 : 609 – 619 .
   Web of Science ®Google Scholar
• Brown , M.E. 1982 . “ Nitrogen fixation by free living bacteria associated with plant—Fact or fiction? ” . In Bacteria and Plants , Edited by: Rhodes‐Roberts , M.E. and Skinner , F.A. 25 – 41 . London, , England : Academic Press .
   Google Scholar
• Brown , M.E. and Burlingham , S.K. 1968 . Production of plant growth substances by Azotobacter chroococcum . J. Gen. Microbiol , 53 : 135 – 144 .
   PubMedGoogle Scholar
• Cooper , R. 1959 . Bacterial fertilizers in the Soviet Union . Soil Fert. , 22 : 327 – 333 .
   Google Scholar
• Davies , J.P. 1987 . “ The plant hormone concept: Transport, concentration, and sensitivity ” . In Plant Harmones and Their Role in Plant Growth and Development , Edited by: Davies , J.P. 12 – 23 . Dordrecht, , The Netherlands : Martinus Nijhoff Publishers .
   Google Scholar
• El‐Essaway , A.A. , El‐Sayed , M.A. , Mohamed , Y.A.H. and El‐Shanshoury , A. 1984 . Effect of combined nitrogen on the production of plant‐growth regulators by Azotobacter chroococcum . Zentrabl. Mikrobiol , 139 : 327 – 333 .
   Google Scholar
• Frankenberger , W.T. Jr. and Arshad , M. 1995 . Phytohormones in Soils: Microbial Production and Function , New York, NY : Marcel Dekker, Inc. .
   Google Scholar
• Frankenberger , W.T. Jr. , Chang , A.C. and Arshad , M. 1990 . Response of Raphanus sativus to auxin precursor L‐tryptophan applied to soil . Plant Soil , 129 : 235 – 241 .
   Web of Science ®Google Scholar
• Hussain , A. , Arshad , M. , Hussain , A. and Hussain , F. 1987 . Response of maize (Zea mays L.) to Azotobacter inoculation under fertilized and unfertilized conditions . Biol. Fert. Soils , 4 : 73 – 77 .
   Web of Science ®Google Scholar
• Hussain , A. , Hussain , A. , Iftikhar , M.Q. and Ahmad , S. 1985 . “ Azotobacter and wheat growth ” . In Nitrogen and the Environment , Edited by: Malik , K.A. , Naqvi , S.H.M. and Aleem , M.I.H. 389 – 394 . Faisalabad, , Pakistan : Nuclear Institute for Agriculture and Biology .
   Google Scholar
• Hussain , A. , Sarfraz , M. , Arshad , M. and Javed , M. 1993 . Potential of Azotobacter for promoting potato growth and yield under optimum fertilizer application . Pak. J. Agric. Sci. , 30 : 217 – 220 .
   Google Scholar
• Jensen , H.L. 1964 . Simple method for counting Azotobacter in soil samples . Wanda Fenglerowa. Acta Microbiol. Polonica , 14 : 203 – 206 .
   Google Scholar
• Martens , D.A. and Frankenberger , W.T. Jr. . Assimilation of 3'‐14C‐indole acetic acid and tryptophan by wheat varieties from nutrient media . Proceedings 19th Annual Meeting Plant Growth Regulator Society of America . San Francisco, CA. pp. 99 – 100 .
   Google Scholar
• Martens , D.A. and Frankenberger , W.T. Jr. 1994 . Assimilation of exogenous 2'‐l4C‐indole acetic acid and 3'‐14C‐tryptophan exposed to roots of three wheat varieties . Plant Soil , 166 : 281 – 290 .
   Web of Science ®Google Scholar
• Paul , E.A. and Clark , F.E. 1989 . Soil Microbiology and Biochemistry , San Diego, CA : Academic Press, Inc. .
   Google Scholar
• Salmeron , V. , Martinez‐Toledo , M.V. and Gonzalez‐Lopez , J. 1990 . Nitrogen fixation and production of auxins, gibberellins and cytokinins by an Azotobacter chroococcum strain isolated from the root of Zea mays in the presence of insoluble phosphate . Chemosphere , 20 : 417 – 422 .
   Google Scholar
• Sarwar , M. , Arshad , M. , Martens , D.A. and Frankenberger , W.T. Jr. 1992 . Tryptophan‐dependent biosynthesis of auxins in soil . Plant Soil , 147 : 207 – 215 .
   Web of Science ®Google Scholar
• Steel , R.G.D. and Torrie , J.H. 1980 . Principles and Procedures of Statistics: A Biometrical Approach. , 2nd ed. , New York, NY : McGraw‐Hill .
   Google Scholar