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Effect of Salinity on Some Morpho-physiological Characters and Yield in Three Sesame Cultivars

M. A. Ali
Former MS Student
Department of Crop Botany, BAU, Mymensingh

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

M. Tazul Islam
Ex-Director
GTI, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

A pot experiment was conducted at the Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh during February to May 2004 to assess the effect of different salinity levels on growth and yield attributes of three sesame cultivars namely BINA TIL-1, T6 and BARI Til-3. The salinity levels were control 6 dS/m and 9 dS/m imposed by irrigation of NaCl salt solution at 45 days after sowing. The experiment was laid out following Randomized Complete Block Design with three replications. Plant height, leaf area, total dry matter, number of capsule per plant, number of seeds per capsule, seed weight per plant, 1000-seed weight and harvest index progressively decreased with the increasing salinity level. BINA Til-1 showed better performance on the above morpho-physiological parameters. BARI Til-3 had higher Na⁺ in leaves and was found intermediate on the other parameters. T6 showed the lowest yield attributes, K⁺ content and the highest Na⁺ content in leaves. Salinity tolerance seemed to be better in BINA Til-1 followed by BARI Til-3 and T6.

Keywords: Salinity, Sesame, Yield

Location: Bangladesh Institute of Nuclear Agriculture (BINA)

Start Date: 25-02-2004

End Date: 20-05-2004

Program Area: Risk Management in Agriculture

Commodity: Sesame

Objectives:

The objectives of the study were to assess the effect of different salinity levels on growth and yield attributes of sesame cultivars and to find out stress tolerant cultivar.

Methodology:

A pot experiment was conducted at the Bangladesh Institute of Nuclear Agriculture (BINA) during 25 February to 20 May of 2004, to evaluate salinity tolerance levels of the sesame cultivars viz., BINA Til-1, T6 and BARI Til-3. Seven kg soils were taken in each pot. The experiment was laid out in Randomized Complete Design with 3 replications. Three hundred mg urea, 350 mg TSP and 50 mg MP per hectare, respectively. Salinity treatments viz., control (0.23 dSm-1), 6 and 9 dSm-1 were imposed at 45 days after sowing (DAS) and continued until harvest. At 50 DAS, data on leaf area, total dry matter plant^-1 and Na⁺ and K⁺ contents in leaves were recorded. Atomic absorption spectrophotometer recorded Na⁺ and K⁺ contents in leaves. At maturity, yield and yield attributes were also recorded. Data were analyzed using the MSTAT-C statistical program developed by Russell (1986).

Source of Information: J. Bangladesh Agril. Univ. 3(2): 209-214, 2005

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Plant height, leaf area, total dry matter, number of capsule per plant, number of seeds per capsule, seed weight per plant, 1000-seed weight and harvest index of sesame cultivars progressively decreased with the increasing salinity level. BINA Til-1 showed better performance on the above morpho-physiological parameters. BARI Til-3 had higher Na⁺ in leaves and was found intermediate on the other parameters. T6 showed the lowest yield attributes, K⁺ content and the highest Na⁺ content in leaves. Salinity tolerance seemed to be better in BINA Til-1 followed by BARI Til-3 and T6.

Knowledge Management: Journal