Author

Yuliana Retnowati

Subject

- Sains

Abstract

The aim of the study was to obtainan endofityc microorganisms that potential to produce IAA hormone in the root of corn and to analyze the ability to produce IAA by manipulating of the growth medium that used the liquid waste of tofu industry. The method based on descriptive methode that describe the ability of selected endofityc microorganism in IAA hormone producing at the liquid waste of tofu industry. The isolation of endofityc bacterial based on Radu and Kqeen method (2002), then characterization and selection was done. The ability producing IAA hormone test was based on colorimetry method used spectrophotometer on 530nm of wavelength. The results showed that there were six isolates of endophytic bacteria isolated from the roots of Bisi and Motoro II maize varieties which shows the character of colony morphology and cell-specific forms. The results of measurements of the ability of the hormone IAA in vitro income showed an increase in levels of IAA until the seventh day of incubation. While the test results of hormone production on the medium tofu industrial wastewater know precisely a decline compared to in vitro tests and the highest IAA levels achieved at 48 hours of incubation. Key word : endophytic microorganisms, IAA growth hormone, maize plant

Publisher

Lembaga Penelitian Universitas Negeri Gorontalo

Contributor

-

Publish

2012

Material Type

ARTIKEL

Right

-