Vol. 1 (1) : January-February 2010 issue
Green Farming Vol. 1 (1) : 64-66 (January-February, 2010) (Renewed)
Biomass increase in rabi maize through folair application of IAA and GA3 producing Azospirillum and Acetobacter endophytes
DIPMALA G. GUPTA1* and H.N. SHELAT2
Department of Microbiology, B.A.College of Agriculture, Anand Agricultural University, Anand – 388 110 (Gujarat)
Designation : 1Jr. Res. Fellow, 2Asstt. Res. Scientist & Major Advisor
Subject : Biotechnology, Molecular biology, Agriculture Microbiology and Cancer Res.
Paper No. :
Total Pages : 3
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Revised accepted :
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Citation :
DIPMALA G. GUPTA and H.N. SHELAT. 2010. Biomass increase in rabi maize through foliar application of IAA and GA3 producing Azospirillum and Acetobacter endophytes. Green Farming Vol. 1 (1) : 64-66 ; January-February, 2010 (Renewed)
ABSTRACT
Screening of endophytes was done in situ using whatman paper method which confirmed the positive effect of tryptophan on IAA production. In freshly prepared cultures, the concentration of IAA was maximum gradually decreasing on long term storage. In vivo, efficacy testing of the screened isolates in maize was carried out during rabi 2007-08, wherein, foliar application of Azopsirillum Az-4 in maize cv. GM-3 proved significantly superior over respective control. The findings of this study provide significant evidence that IAA and GA3 were produced by nitrogen fixing endophytic isolates of Azospirillum and Acetobacter which promotes biological activity in maize with an added advantage of reduction in 25 % nitrogenous fertilizer.
Key words :
Azospirillum, Acetobacter, Endophyte, IAA, GA3, Maize.
