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Effect of Different Temperature Levels on Germination, Root and Shoot Development of Rice Varieties

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

Dr. Mahbuba Khatoon
Senior Scientific Officer
Crop Physiology Division, BINA, Mymensingh

Abstract/ Executive Summary:

Temperature is one of the most important environmental factors influencing rice germination growth, development and yield processes. An experiment was conducted with 12 rice varieties viz. Binasail, Iratom-24, Binadhan-4, Binadhan-5, Binadhan-6, Binadhan-7, Binadhan-8, Binadhan-9, Binadhan-10, Binadhan-11, Binadhan-14 and Binadhan-17 in a plant growth chamber at Bangladesh Institute of Nuclear Agriculture during July to December 2015 to assess the effect of different temperature levels on germination, root and shoot length and to find out the suitable temperature for proper germination. Five temperature treatments viz. 20, 25, 30, 35 and 40oC were imposed for 7 days. Rice varieties showed better germination% at 25-35oC, medium at 40oC and the lowest at 20oC. The lowest root and shoot length was also recorded at 20oC. More than 95% germination was observed in Binasail, Iratom-24, Binadhan-6, Binadhan-7, Binadhan-8, Binadhan-10, Binadhan-11 and Binadhan-14 under the temperature treatments. Among those Binasail and Binadhan-7 also showed better root and shoot length.

Keywords: Rice, Temperature, Germination, Root, Shoot

Location: BINA, Mymensingh

Start Date: 01-07-2015

End Date: 31-12-2015

Program Area: Risk Management in Agriculture

Commodity: Rice

Objectives:

To assess the effect of different temperature levels on germination, root and shoot length and to find out suitable temperature for proper germination

Methodology:

An experiment was conducted with 12 rice varieties viz. Binasail, Iratom-24, Binadhan-4, Binadhan-5, Binadhan-6, Binadhan-7, Binadhan-8, Binadhan-9, Binadhan-10, Binadhan-11, Binadhan-14 and Binadhan-17 in a plant growth chamber at Bangladesh Institute of Nuclear Agriculture (BINA) during July to December, 2015. Five temperature treatments viz. 20, 25, 30, 35 and 40oC were imposed for 7 days in a plant growth chamber. The experiment was laid out in a completely randomized design with three replications. Three hundred seeds of each rice variety for each temperature treatment were soaked in tissue paper in Petri dishes. Then those varieties were exposed to each temperature treatment in a plant growth chamber. Data on germination, root, and shoot length were recorded. Data were analyzed statistically and means were compared by DMRT.

Source of Information: International Journal of Experimental Agriculture Volume: 9 Issue: 2 September 2019 ISSN 1923-7766 (Web Version)

Article Link (Online Journal): http://ggfjournals.com/assets/uploads/MIN-770.pdf

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Rice varieties showed better germination% at 25-35°C, medium at 40°C and the lowest at 20°C. The lowest root and shoot length was also recorded at 20°C. More than 95% germination was observed in Binasail, Iratom-24, Binadhan-6, Binadhan-7, Binadhan-8, Binadhan-10, Binadhan-11 and Binadhan-14 under the temperature treatments.

Knowledge Management: Journal