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Screening of Lentil Germplasm Against Stemphylium Blight by Observing Disease Reaction in Three Different Stages

Md. Abdur Razzak*
International Maize and Wheat Improvement Center (CIMMYT)-Bangladesh

Md. Amirul Islam
International Maize and Wheat Improvement Center (CIMMYT)-Bangladesh

Md. Habibur Rahman
Department of Plant Pathology, Patuakhali Science and Technology University

Maria Akter Sathi
Department of Horticulture, Patuakhali Science and Technology University

Md. Atikuzzamman
International Maize and Wheat Improvement Center (CIMMYT)-Bangladesh

Abstract/ Executive Summary:

Stemphylium blight of lentil (Stemphylium botryosum) a standout amongst the most vital constraints of lentil production in Bangladesh. An investigation was carried out at the Regional Agricultural Research Station (RARS), Bangladesh Agriculture Research Institute (BARI), Rahmatpur, Barisal to pick out lentil germplasms against Stemphylium blight. Under the present study 100 lentil lines and 2 check varieties were evaluated for their reaction to Stemphylium blight and yield performance under the natural epiphytotic conditions at three growth stages namely flowering stage, pod setting stage and maturity stage. Altogether 102 lines/varieties were screened where 5, 91 and 6 lines were selected as Highly Resistant (HR), Resistant(R) and Moderately Resistant(MR) respectably at the flowering stage. The highly resistant 5 lines were BD-3921, BD-3930, BD-3931, BARI Masur-7 and Local check. In pod setting stage, out of 102 lines/varieties, 16, 78 and 8 lines were showed Resistant (R), Moderately Resistant (MR) and Moderately Susceptible (MS) reaction, respectably, to stemphylium blight disease of lentil. During maturity, 40, 52 and10 lines out of 102 lines/varieties were expressed as Moderately Resistant (MR), Moderately Susceptible (MS) and Susceptible (S) reactions, respectively.

Keywords: Stemphylium blight, Lentil, Resistant, Growth stages and Yield.

Location: Regional Agricultural Research Station (RARS), Bangladesh Agriculture Research Institute (BARI), Rahmatpur, Barisal

Start Date:

End Date:

Program Area: Pest Management

Commodity: Lentil, Diseases

Objectives:

There are many options to control the disease. Among the different alternate means of disease management, development of resistant/tolerant varieties is the most widely preferred method. To identify the resistant/tolerant source of lentil germplasms against stemphylium blight was the view of this research.

Methodology:

2.1 Experiment details The experiment was conducted at experimental field of Pulses Research Centre (PRC), Regional Agricultural Research Station (RARS), Bangladesh Agricultural Research Instituted (BARI), Rahmatpur, Barisal. The experiment was laid out in Randomized Complete Block Design (RCBD) with two replications. The individual plot size was 2m² (4 m × 0.5 m). Block to block distance was 0.5 m. The length of each row was 4m and width was 0.25 m. BARI masur-7 and local variety was sown as check. Provax-200 @ 5g/kg was used to treat lentil seed to reduce seed borne pathogen. Furrows were made with power tiller-driven furrows maintaining a distance of 40 cm. Seeds were sown in the furrow using a polybag containing required amount for each plot. The furrows were covered with soil soon after sowing. The length of line was 4 m with continuous sowing of seed in the lines. All intercultural operations were followed as per BARI Handbook. The weather of the experimental site during the study period was collected from the Metrological Department. Barisal, Bangladesh. 2.2 Plant materials Seeds of 100 lentil varieties/lines were collected from Plant Genetic Resource Centre (PGRC) Gazipur and Pulses Research Centre (PRC), Ishurdi, Pabna for this experiment. The collected seeds were stored in a well-ventilated room at room temperature immediately after receiving. Seeds were preserved in a refrigerator at controlled temperature in the Plant Pathology laboratory of RARS followed by registration till the field experiment starts. 2.3 Assessment of Stemphylium blight Disease severity data was recorded in three times on the basis of 0-5 scale where, 0= No infection (HR), 1= Few scattered leaf but no twig blighted (R), 2= 5-10% leaflets infected and/or few scattered twig blighted (MS), 3= 11-20% leaflets infected and/or 1-5% twig blighted (MS), 4= 21-50% leaflet infected and/or 6-10% twig blighted (S) and 5= above 51% leaflet infected and/or more than 10% twig blighted (HS) [8,9]. 2.4 Weather data The weather of the experimental site during the study period were collected from the Meteorological Department, Barisal, Bangladesh. 2.5 Data analysis MSTAT-C program was used to analyze the collected data. ANOVA, as well as LSD test, were done to determine the huge variation among the treatment means.

Source of Information: Malaysian Journal of Halal Research (MJHR) 1(2) (2018) 15-18

Article Link (Online Journal): DOI : http://doi.org/10.26480/mjhr.02.2018.15.18

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Stemphylium botryosum which is responsible for Stemphylium blight of lentil is considering at present as one of the most responsible constrains of lentil production in Bangladesh. Under the present study seeds of 102 lentil varieties/lines were evaluated for their reaction to Stemphylium blight under natural epiphytotic conditions in the southern region of Bangladesh. During the experimental period of 2011-12 under field condition, it was observed that out of 102 lines/varieties 5, 91 and 6 lines/varieties were exhibited Highly Resistant (HR), Resistant (R) and Moderately Resistant (MR) reaction in flowering stage respectively. In this stage, 5 lines that showed Highly Resistant (HR) are BD-3921, BD-3930, BD-3931, BARI Masur-7 and Local check. But out of 102 lines/varieties, 16, 78 and 8 lines were showed Resistant (R), Moderately Resistant (MR) and Moderately Susceptible (MS) reaction in the pod setting stage and 40 lines/varieties were graded as moderately resistant where 52 and 10 were recorded as moderately susceptible and susceptible at maturity stage. The tested lentil lines/verities differed significantly from one to another in respect of growth and yield contributing parameters. During the year 2011-12 performance of plants was very good in 40 lines/varieties which were screened from 102 lines/varieties where 52 are moderately susceptible and 10 are susceptible in maturity or final stage.

Knowledge Management: Journal