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Performance of Tomato Mutants and Varieties Against Bacterial Wilt

Dr. Hosne-Ara Begum
Chief Scientific Officer (CC)
Plant Pathology Division, Bangladesh Institute of Nuclear Agriculture (BINA), BAU Campus, Mymensingh, Bangladesh.

M. B. Meah
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh

Abstract/ Executive Summary:

Ten induced mutants/varieties of tomato of Bangladesh Institute of Nuclear Agriculture (BINA) along with eleven cultivars of exotic and local origin were screened under artificially inoculated conditions against bacterial wilt at BINA field, Mymensingh. Among them eleven mutants/cultivars were evaluated in the farmer’s field under natural condition during the winter season of 2007. Field survey revealed that four mutants/cultivars viz. King Kong, TM-12, TM-135, and Manik were graded as highly resistant Binatomato-2, Binatomato-3, Ratan and TM-130 were resistant, Bahar was moderately resistant and Pusaruby and Roma VF were moderately susceptible to the disease. Under artificially inoculated conditions, the induced mutant TM-15 and the exotic variety King Kong were highly resistant, TM-18 and TM-12 were moderately resistant, TM-16, Manik, BARI Tomato-5 and Binatomato-3 were moderately susceptible to the disease.

Keywords: Tomato, Mutants and varieties, Resistance, Bacterial wilt

Location: Bangladesh Institute of Nuclear Agriculture (BINA)

Start Date: 15-11-2007

End Date: 15-04-2008

Program Area: Pest Management

Commodity: Tomato

Objectives:

To identify the sources of resistance in induced mutants/varieties of tomato against bacterial wilt

Methodology:

The seeds of twenty one mutants/cultivars were collected from Bangladesh Institute of Nuclear Agriculture, Bangladesh Agricultural Research Institute, Asian Vegetable Research Development Centre, Taiwan and seed store of Natoon Bazar, Mymensingh.

Field survey under natural conditions: Six induced mutants/varieties of tomato along with five check varieties viz. King Kong, Manik, Ratan, Roma VF and Pusaruby were screened against bacterial wilt under natural condition during the winter season of 2007 in the farmer’s field at Boyra, Mymensingh. The experiment was carried out in a randomized complete block design with three replications. Thirty days old healthy seedlings were transplanted in 2.0m ×1.5m plot maintaining 50 cm space both for row to row and plant to plant. Data on percent wilted plants^-1 plot and disease severity of each plant was recorded following (0-5) scale for the disease (Ahmed and Haque, 1986).

Prevalence of bacterial wilt of tomato under artificially inoculated conditions: The experiment was set up at Bangladesh Institute of Nuclear Agriculture (BINA) farm, Mymensingh during the winter season of 2007. Screening of 2 mutants/cultivars was done through artificial inoculation of plants with 48 hours old culture of R. solanacearum following soil drenching method.

Source of Information: Bangladesh Journal of Nuclear Agriculture. Vol: 29, pp: 67-71, ISSN 0258-7130, 2013

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Two mutants and a exotic variety of tomato were graded as highly resistant. The mutant TM-130 was resistant under natural field condition. Under artificially inoculated condition, the induced mutant TM-15 and variety King Kong were highly resistant TM-18 and TM-12 were moderately resistant TM-16 was moderately susceptible to bacterial wilt. It helps breeder to develop bacterial wilt tolerant varieties and increasing yield of tomato.

Knowledge Management: Journal