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Screening of Kenaf and Mesta for Resistance/tolerance to Spiral Borer

A.Haque
SSO
Entomology Department,Pest Management Division, BJRI,Manik Mia Avenue,Dkhaka-1207.

Abstract/ Executive Summary:

None of the kenaf cultivars were found free from borer infestation. Mesta variety was not affected severely by this spiral borer in both in both stations. The Amount of Plant Damage (ADP) in mesta line was less than 1% and percentage of borer infestation were very low. Therefore the line received rank Resistant (R) to spiral borer. Among these kenaf lines the mean percentage of plant infestation in Dhaka was lower than the three previous years. As a result the amount of plant damage ranged from 0.093 to 0.87 and received rank Resistant In Faridpur two advanced kenaf lines (PS-1 and KE-1) were recorded as Moderately Resistant (MR).

Keywords: Screen, Kenaf, Mesta. Resistance, Spiral borer

Location: Manikganj, Monirampur, Rangpur and Faridpur

Start Date: 15-04-2004

End Date: 30-11-2004

Program Area: Pest Management

Commodity: Mesta, kenaf

Objectives:

1.To identify sources of resistant/tolerant Kenaf and Mesta germplasms against Spiral borer.

2.To help the Breeders in evolving pest resistant/tolerant varieties

Methodology:

Five advanced lines of Kenaf and one advanced line of mesta ( SAMU-93) with recommended varieties ( HC-95, HC-2 and HS-24 ) were grown in the plot (3X3m) following RCBD with 3 replications to select spiral borer tolerant/resistant lines. Data were taken from the experimental plots of Central station, Dhaka; JAES, Manikganj, Faridpur, Rangpur and Monirampur. the percent Plant Infestation (PPI) and amount of Plant Damage (APD) were computed according to the formula used by Pradhan (1988).

Source of Information: Annual Report, 2004,BJRI

Article Link (Online Journal):

Funding Source:

1. Government

Budget: Five thousands taka only

Total Budget (Tk.) : Five thousands taka only

Achievement/Findings:

The Amount of Plant Damage (ADP) in mesta line was less than 1% and percentage of borer infestation were very low. Therefore the line received rank Resistant (R) to spiral borer. Among these kenaf lines the mean percentage of plant infestation in Dhaka was lower than the three previous years. As a result the amount of plant damage ranged from 0.093 to 0.87 and received rank Resistant In Faridpur two advanced kenaf lines (PS-1 and KE-1) were recorded as Moderately Resistant (MR).

Knowledge Management: Report/Proceedings