Start Submission Become a Reviewer

Reading: Pre-harvest chemical elicitor treatment enhances induced resistance in harvested banana frui...

Download

A- A+
Alt. Display

Research Articles

Pre-harvest chemical elicitor treatment enhances induced resistance in harvested banana fruit cv. ‘Embul’ and reduces anthracnose caused by Colletotrichum musae

Authors:

UWNP Wanigasekara,

LK
About UWNP
Department of Botany, Faculty of Science, University of Peradeniya, Peradeniya.
X close

NKB Adikaram ,

LK
About NKB
Department of Botany, Faculty of Science, University of Peradeniya, Peradeniya.
X close

CL Abayasekara

LK
About CL
Department of Botany, Faculty of Science, University of Peradeniya, Peradeniya.
X close

Abstract

Developing banana fruits cv. ‘Embul’ were treated in the field with chemical elicitors, Bion®, salicylic acid (SA) or K2HPO4 at two stages, 2 and 4 or 9 and 11 weeks after bunch emergence. Fruits harvested 14 – 15 weeks after bunch emergence were inoculated with Colletotrichum musae, and the development of anthracnose was assessed during ripening. Treatment with Bion® or SA at 9 and 11 weeks after bunch emergence while delaying the disease incidence significantly reduced (p < 0.05) the severity of the disease by 43 % and 65 %, respectively compared to the control. SA (500 mg/L) treatment was 22 % more effective than Bion® (200 mg/L) while the treatment with K2HPO4 (20 mg/L) increased the disease severity by 5 %. Bion® or SA-treated fruits when challenge inoculated with C. musae after harvest showed a significantly enhanced chitinase activity (p < 0.05). There was also an increased β–1,3glucanase activity and antifungal activity of the fruit peel compared to the controls. The elicitor treatment did not affect the fruit weight or postharvest quality.

DOI: http://dx.doi.org/10.4038/jnsfsr.v42i2.6994

J.Natn.Sci.Foundation Sri Lanka 2014 42 (2): 101-110

 

How to Cite: Wanigasekara, U., Adikaram, N. and Abayasekara, C., 2014. Pre-harvest chemical elicitor treatment enhances induced resistance in harvested banana fruit cv. ‘Embul’ and reduces anthracnose caused by Colletotrichum musae. Journal of the National Science Foundation of Sri Lanka, 42(2), pp.101–110. DOI: http://doi.org/10.4038/jnsfsr.v42i2.6994
Published on 09 Jun 2014.
Peer Reviewed

Downloads

  • PDF (EN)

    comments powered by Disqus