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In Association with
Suppression of weed Lathyrus aphaca (L) growth by 5-aminolevulinic acid producing rhizobacterial isolates
6th World Congress on Biotechnology
Manisha Phour and S S Sindhu
Chaudhary Charan Singh Haryana Agricultural University, India
Posters-Accepted Abstracts: J Biotechnol Biomater
Abstract
Lathyrus aphaca (wild pea) is an important weed of mustard that affects the germination, growth and yield of mustard. Recently, production of phytohormone in high concentration by some rhizobacteria has been found to inhibit the seedling growth of certain plants. Therefore, one fifty four bacterial isolates were screened for production of aminolevulinic acid (ALA) and their stimulation/retardation effect on the growth of Lathyrus aphaca seedlings was studied on 0.8% water agar medium plates. Ten bacterial isolates i.e., HMM21, HMM22, HMM80, HMM86, HMM92, HMM97, HMM115, JMM11, JMM15 and JMM35 produced maximum ALA ranging from 15.0-25.0 �¼g/ml in glycine and succinate supplemented broth. These rhizobacterial isolates were tested for their effect on growth of weed under lab conditions. Bacterial isolates HMM22 and HMM86 were found to inhibit the growth of Lathyrus aphaca only at 5th day of seed germination. Bacterial isolate HMM21 was found to inhibit the growth of Lathyrus aphaca only at 10th day of seed germination. Rhizobacterial isolates HMM92, HMM97, HMM115, JMM15 and JMM35 were found to inhibit the growth of Lathyrus aphaca at both 5th and 10th day of seed germination. Thus, inoculation of rhizobacterial isolates could be exploited for their use as biological herbicide under pot and field conditions.Biography
Email: mphour4@gmail.com
