Biological seed treatments for Xanthomonas

Agustiyansyah, one of the PhD. student I am involved as Committee member, has recently published part of his dissertation research finding. The following is information regarding the published journal:

Agustiyansyah, S. Ilyas, Sudarsono, M. Mahmud. 2010. Pengaruh perlakuan benih secara hayati pada benih padi terinfeksi Xanthomonas oryzae pv. oryzae terhadap mutu benih dan pertumbuhan bibit (The effects of biological seed treatments applied on Xanthomonas oryzae pv. oryzae infected rice seed on seed quality and seedling growth). J. Agronomi Indonesia 38(3): 185-191 (in Indonesian with English Abstract).

Abstract

Bacterial leaf blight, the disease caused by Xanthomonas oryzae pv. oryzae (Xoo), a seedborne pathogens, has been known to reduce rice yield by 50%. In this study, two consecutive experiments were conducted in order to investigate the effects of various biological seed treatments applied on rice artificially infected by Xoo on seed quality and seedling growth. Laboratory experiment was arranged in a completely randomized design while greenhouse experiment was arranged in a completely randomized block design. In both experiments, 12 seed treatments were applied: un-infected seeds (negative control) without seed treatment, Xoo infected seeds (positive caontrol) without seed treatment, infected seeds soaked in bactericide Agrept 0.2%, infected seeds soaked in biological agent suspension isolate A6, infected seeds soaked in isolate A54, infected seeds soaked in isolate A5/B, infected seeds soaked in isolate 11/C, infected seeds matriconditioned + isolate A6, infected seeds matriconditioned + isolate A54, infected seeds matriconditioned + isolate A5/B, and infected seeds matriconditioned + isolate 11/C. Soaking seeds in Agrept 0.2% or in suspension of biological agent was conducted for 30 h. Matriconditioning was conducted using ration of seeds to carrier (burned rice hull, 32 mesh) to suspension of biological agent or bactericide solution of 1.0 (g):0.8 (g):1.2 (mL) for 30 h in air-conditioned room ca. 25 C. Results of the experiments showed that all biological seed treatments could suppress Xoo in rice seeds. Matriconditioning plus biological agent (isolate A6), biopriming with isolate A6 or isolate A54 were the best seed treatments to improve seed viability and vigor. In greenhouse experiment, matriconditioning plus isolate A54 were the best seed treatment to increase seedling growth.

For further information regarding this published journal, please contact: Agustiansyah at email address: agustiansyahn@yahoo.com

Also read (Baca juga):

About PMB Lab: Prof. Sudarsono

This blog is dedicated as a communication media among alumni associated with PMB Lab, Dept. of Agronomy and Horticulture, Fac. of Agriculture, IPB, Bogor – Indonesia. It contains various information related to alumni activities, PMB Lab’s on going activities and other related matters.
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