Isolation and selection of rhizospheric bacteria with biofertilizing potential for corn cultivation
| Autor: | Mónica Beatriz López-Hernández, Yaritza Y. Quintal-Vargas, Ronald Ferrera-Cerrato, Arely Anayansi Vargas Díaz, Alberto Santillán-Fernández, Juan B. Chale-Dzul |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Agro Productividad. 14 |
| ISSN: | 2594-0252 2448-7546 |
| Popis: | Objective: To isolate and determine in a greenhouse environment the biofertilizingpotential of rhizospheric bacteria associated to corn (Zea mays L.) at Campeche,Mexico.Design / methodology / approach: Rhizospheric soils were collected from twocorn production zones with different management conditions. Bacterial strains wereisolated from these samples and their biofertilizing potential determined by in vitro2 and in vivo tests. The obtained data from both tests were assessed using ananalysis of variance (ANOVA) and a means comparison test (LSD, p ? 0.01).Results: In total, 16 rhizospheric bacteria were isolated, a higher number in non-mechanized soils (n = 10) compared to mechanized ones (n = 6). In the in vitrotests, the most representative activity corresponds to nitrogen fixation (81%)attributed to a higher bacteria percentage, while the activity with lower bacterianumbers corresponds to IAA production (25%). At the in vivo tests in corn plants,the YM1 strain presented the highest fresh and dry root biomass (20 and 2 g plant -1 , respectively). The YM4 strain promoted greater plant height (63.33 cm), and YM5registered the highest values in stem diameter (7.13 mm), root length (36.78 cm)and fresh shoot weight (12.03 g plant -1 ).Limitations / Implications: Strain evaluations were limited to controlledgreenhouse conditions.Conclusion: The YM1, YM4 and YM5 strains show potential for further evaluationas biofertilizers for corn cultivation under field conditions. |
| Databáze: | OpenAIRE |
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