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Efecto de la inoculación de bacterias promotoras del crecimiento vegetal en maracuyá y badea cultivadas en condiciones de estrés hídrico
| Content Provider | Semantic Scholar |
|---|---|
| Author | Linares, Angie Natalia Murcia Bustos, Sebastián |
| Copyright Year | 2017 |
| Abstract | Agriculture has allowed world population development in different ways. However, in Colombian eastern planes region it has not being possible due to the environmental and topographic conditions in this territory. In spite of its big extension it has problems due to the extreme rainfall regimes which are aboundant in first half of the year but they are scant in the second half. This rainfall regime, has limited the agricultural productive capacity. Because these problems, it is necessary to find alternatives for new crops which imply a few extensions of land and a few investments. For this purpose, fruit plants that do not require large infrastructures for their development are good alternative for crops; for example, passionfruit which has a great export potential. Plant growth promoting rhizobacteria (PGPR) influence both the growth and yield of plants. In this study, seven bacterial isolates of from Casanare soils were evaluated for their ability to produce indoleacetic acid (AIA) and promote the germination of passionfruit and giant passionfruit seeds. Also, the strains were tested for its influence ingrowth of passionfruit seedlings in situations of hydric stress. All the strains produced AIA, and they did not cause an increase in the seeds germination, but they caused an increase in the length of passionfruit seedlings. Of these strains, Y16 and P8 were chosen for greenhouse experiment, because their higher AIA production (8.222 μg/mL y 7.917 μg/mL respectively). In greenhouse experiments carried out with and without hydric stress, Y16 strain promoted the growth of secondary roots and the plant biomass, whereas P8 increased the stem length root (TR) in both treatments. In vitro antagonism tests against Fusarium oxysporum tests showed negative results. Finally, it was concluded that both microorganisms produced AIA, generate physiological changes on the plants as the increase of the secondary roots plant biomass, stem and root length and possibly they may provide tolerance in response to a water deficit situation. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://ciencia.lasalle.edu.co/cgi/viewcontent.cgi?article=1013&context=biologia |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
