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- Publisher
- Wiley
- Copyright
- Copyright © 1997 Wiley Subscription Services, Inc., A Wiley Company
- ISSN
- 0931-2250
- eISSN
- 1439-037X
- DOI
- 10.1111/j.1439-037X.1997.tb00480.x
- Publisher site
- See Article on Publisher Site
Abstract
The effects of 2,4‐D with or without Azospirillum hra‐iiknse (Sp7) on nodulation of wheat (cv HD2428) have been investigated under hydropooical conditions. In the nutrient medium, varying concentrations of N and 2,4‐D were used for growing wheat seedlings, N free Hoaglatid solution along with 2,4‐D (0.5 ppm) was found to be the best concentration for noduiation and growth of the seedings, The nilrogenase activity (acetylene reduction y was relatively higher in plants treated with 2,4‐D artd Azospirillum ihan with Azospirillum alone. This seemed to be due to the formation of nodule like stiucture serving as mche for azospirilla to protect it from oxygen. These results confirmed tlie nitrogenase activity of Azospirillun brasiknse in association with the 2,4‐D induced nodules of wheat. Plants inoculated with Azospirillum either alone or with 2,4‐D were transplanted info pols. The photosynthctic rate, chlorophyll content. NRA, grain yield and N content were found to be higher in inoculated plants. The translocation of current photo‐synthates (14C sucrose studies) towards roots was higher in these treatments. Thtss the growth of Azospirilfum and nodule formatioo depend on availability of current photosynthatcs of hosl plants.
Journal
Journal of Agronomy and Crop Science – Wiley
Published: Jul 1, 1997