Rhizosphere Bacteria Increased the Height and Root Number of Chili Plants (Capsicum annuum L.)

Nofa Anjani(1), Triastuti Rahayu(2), Yasir Sidiq(3*),


(1) Department of Biology Education, Universitas Muhammadiyah Surakarta
(2) Department of Biology Education, Universitas Muhammadiyah Surakarta
(3) Department of Biology Education, Universitas Muhammadiyah Surakarta
(*) Corresponding Author

Abstract


Rhizosphere bacteria that promote plant growth is a term for bacteria that contribute to plant development either directly or indirectly. Bacteria in the rhizosphere are called Plant Growht Promoting Rhizobacteria (PGPR) which is a bacterium that can trigger plant growth by producing growth hormones, one of which is the hormone Indole Acetic Acid (IAA) which is involved in the regulation of plant growth and development. Previous research suggests five potential bacteria have been isolated from frangipani. These bacteria are known to be able to produce IAA. However, evidence that its potential as PGPR has not been obtained. Therefore, this study aims to test the effect of rhizosphere bacterial inoculation on chili plants. The research method uses quantitative experimental methods, namely with 15 repetitions for each treatment. The data were analyzed with a 95% student t-test confidence test or with a significant level of 5% (a = 0.05). This inoculation begins with the germination of chili seeds and the radicula is observed. The germinated chili seedlings were then soaked in bacterial suspension for an hour at room temperature. The results showed that inoculation using P38 isolate incubated for 6 hours was able to significantly increase plant height and number of chili plant roots. While the P31 isolate that was incubated for 6 hours inhibited the height of plants and the number of leaves of chili plants. Thus, these results provide important information about the effect of inoculation of new isolated rhizosphere bacteria.

 


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DOI: 10.24235/sc.educatia.v13i1.15158

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