Rhizobacteria strains as promoters of rooting in hybrids of Eucalyptus nitens × Eucalyptus globulus

ABSTRACT In Chile, the Eucalyptus nitens (H. Deane & Maiden) Maiden × E. globulus Labill. hybrid presents the highest production potential due to its desirable characteristics for the production of cellulose. Nevertheless, its low ability to rooting complicates the clonal propagation in nurserie...

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Autores principales:	González,Paulina, Sossa,Katherine, Rodríguez,Francisco, Sanfuentes,Eugenio
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2018
Materias:	Eucalyptus forestry nurseries rhizobacteria roots hybrids
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000100003
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spelling	oai:scielo:S0718-583920180001000032018-04-25Rhizobacteria strains as promoters of rooting in hybrids of Eucalyptus nitens × Eucalyptus globulusGonzález,PaulinaSossa,KatherineRodríguez,FranciscoSanfuentes,Eugenio Eucalyptus forestry nurseries rhizobacteria roots hybrids ABSTRACT In Chile, the Eucalyptus nitens (H. Deane & Maiden) Maiden × E. globulus Labill. hybrid presents the highest production potential due to its desirable characteristics for the production of cellulose. Nevertheless, its low ability to rooting complicates the clonal propagation in nurseries, with the need for new alternatives to increase rooting. The objective of this research was to evaluate the effect of rhizobacteria in the adventitious rooting of mini-cuttings of two hybrid E. nitens × E. globulus clones, wherein 106 rhizospheric bacterial isolates from five species and hybrids of Eucalyptus spp. were used. The mini-cuttings were treated at the base with a 20 mL liquid suspension of rhizobacterial strains. In addition, cultured bacteria were applied by manual sprinklers in the rooting substrate. In the first trial, 38% of rhizobacteria increased significantly rooting of X-64 clone mini-cuttings. Of these, in a second trial, 50% of rhizobacteria maintained their effect in promoting the rooting in two clones, and in the third trial among the 20 strains evaluated, 10 strains increased rooting in both clones. The rhizobacteria that had the most consistent effect in the rooting increase of the mini-cuttings were species of Bacillus and Pseudomonas sp., as well as the genera Chryseobacterium, Mucilaginibacter and Rhodococcus sp., with these results, it is concluded that 10 rhizobacterial isolates have increased the adventitious rooting of minicuttings of two hybrid clones of E. nitens × E. globulus, and these inoculants could be used in periods of underperformance of minicuttings, in order to optimize their performance.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.78 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000100003en10.4067/S0718-58392018000100003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Eucalyptus forestry nurseries rhizobacteria roots hybrids
spellingShingle	Eucalyptus forestry nurseries rhizobacteria roots hybrids González,Paulina Sossa,Katherine Rodríguez,Francisco Sanfuentes,Eugenio Rhizobacteria strains as promoters of rooting in hybrids of Eucalyptus nitens × Eucalyptus globulus
description	ABSTRACT In Chile, the Eucalyptus nitens (H. Deane & Maiden) Maiden × E. globulus Labill. hybrid presents the highest production potential due to its desirable characteristics for the production of cellulose. Nevertheless, its low ability to rooting complicates the clonal propagation in nurseries, with the need for new alternatives to increase rooting. The objective of this research was to evaluate the effect of rhizobacteria in the adventitious rooting of mini-cuttings of two hybrid E. nitens × E. globulus clones, wherein 106 rhizospheric bacterial isolates from five species and hybrids of Eucalyptus spp. were used. The mini-cuttings were treated at the base with a 20 mL liquid suspension of rhizobacterial strains. In addition, cultured bacteria were applied by manual sprinklers in the rooting substrate. In the first trial, 38% of rhizobacteria increased significantly rooting of X-64 clone mini-cuttings. Of these, in a second trial, 50% of rhizobacteria maintained their effect in promoting the rooting in two clones, and in the third trial among the 20 strains evaluated, 10 strains increased rooting in both clones. The rhizobacteria that had the most consistent effect in the rooting increase of the mini-cuttings were species of Bacillus and Pseudomonas sp., as well as the genera Chryseobacterium, Mucilaginibacter and Rhodococcus sp., with these results, it is concluded that 10 rhizobacterial isolates have increased the adventitious rooting of minicuttings of two hybrid clones of E. nitens × E. globulus, and these inoculants could be used in periods of underperformance of minicuttings, in order to optimize their performance.
author	González,Paulina Sossa,Katherine Rodríguez,Francisco Sanfuentes,Eugenio
author_facet	González,Paulina Sossa,Katherine Rodríguez,Francisco Sanfuentes,Eugenio
author_sort	González,Paulina
title	Rhizobacteria strains as promoters of rooting in hybrids of Eucalyptus nitens × Eucalyptus globulus
title_short	Rhizobacteria strains as promoters of rooting in hybrids of Eucalyptus nitens × Eucalyptus globulus
title_full	Rhizobacteria strains as promoters of rooting in hybrids of Eucalyptus nitens × Eucalyptus globulus
title_fullStr	Rhizobacteria strains as promoters of rooting in hybrids of Eucalyptus nitens × Eucalyptus globulus
title_full_unstemmed	Rhizobacteria strains as promoters of rooting in hybrids of Eucalyptus nitens × Eucalyptus globulus
title_sort	rhizobacteria strains as promoters of rooting in hybrids of eucalyptus nitens × eucalyptus globulus
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000100003
work_keys_str_mv	AT gonzalezpaulina rhizobacteriastrainsaspromotersofrootinginhybridsofeucalyptusnitenseucalyptusglobulus AT sossakatherine rhizobacteriastrainsaspromotersofrootinginhybridsofeucalyptusnitenseucalyptusglobulus AT rodriguezfrancisco rhizobacteriastrainsaspromotersofrootinginhybridsofeucalyptusnitenseucalyptusglobulus AT sanfuenteseugenio rhizobacteriastrainsaspromotersofrootinginhybridsofeucalyptusnitenseucalyptusglobulus
_version_	1714205374393876480

Rhizobacteria strains as promoters of rooting in hybrids of Eucalyptus nitens × Eucalyptus globulus

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