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Evaluation of Lentil Varieties for Temperature Tolerance

Dr. Md. Tariqul Islam
Principal Scientific Officer and Head,
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Md. Azadul Haque
Scientific Officer
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted with ten lentil varieties viz. Binamasur-2, Binamasur-3, Binamasur-4, Binamasur-5, Binamasur-6, Binamasur-7, Binamasur-8, Binamasur-9, Binamasur-10 and BARImasur-5 at BINA, Mymensingh during November 2017 to March 2018 to assess the effect of high temperature (34 ⁰C) at flower initiation stage and pod growth stage on morpho-physiological parameters and seed yield. The 34 ⁰C temperature was imposed for 7 days in plant growth chamber. The experiment was laid out in a completely randomized design with three replications. The nitrate reductase activity, chlorophyll content and photosynthesis rate of leaves were determined during temperature imposed. At harvest, seed yield and yield related parameters were recorded. The collected data were analyzed statistically. High temperature imposed either at flowering stage or pod growth stage had significant negative influence on plant parameters. However, the effect of high temperature at pod development stage was greater. No variety was found tolerant to high temperature.

Keywords: Lentil, Temperature, Photosynthesis, Growth stage, Yield

Location: BINA, Mymensingh

Start Date: 01-11-2017

End Date: 31-03-2018

Program Area: Risk Management in Agriculture

Commodity: Lentil

Objectives:

To assess the effect of high temperature on morpho-physiological parameters and yield of lentil varieties and to find out temperature tolerant variety

Methodology:

An experiment was conducted with ten lentil varieties viz. Binamasur-2, Binamasur-3, Binamasur-4, Binamasur-5, Binamasur6, Binamasur-7, Binamasur-8, Binamasur-9, Binamasur-10 and BARImasur-5 at pot yard and in plant growth chamber of Bangladesh Institute of Nuclear Agriculture (BINA) during November 2017 to March 2018. The high temperature (34 ^oC) was imposed at flower initiation stage and pod growth stage for 7 days in plant growth chamber. The experiment was laid out in a completely randomized design with three replications. The nitrate reductase activity, chlorophyll content and photosynthesis rate of leaves were determined during temperature imposed. At harvest, seed yield and yield related parameters were recorded. The collected data were analyzed statistically.

Source of Information: BINA Annual Report 2017-18: 85-86.

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

High temperature imposed at flowering stage or pod growth stage had significant negative influence on morpho-physiological parameters and yield of lentil varieties. The effect of high temperature at pod development stage was greater and no variety was found tolerant to high temperature.

Knowledge Management: Report/Proceedings