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Identification of Tomato Genotypes for Salt Tolerance

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

M. I. Ara
Former MS Student
Department of Crop Botany, BAU, Mymensingh

R. K. Dutta
Ex-Director General
Bangladesh Institute of Nuclear Agriculture, Mymensingh

Abstract/ Executive Summary:

A pot experiment was carried out to study the salt tolerance of eight tomato genotypes viz J-5 Binatomato-5 BARI tomato-7, CLN-2026, CLN-2366, CLN-2413, CLN-2418 and CLN-2443 at Bangladesh Institute of Nuclear Agriculture during October 2006 to January 2007. Three levels of salinity viz., control, 6 and 10 dS/m were imposed at pre-flowering stage of tomato genotypes. Plant height, primary branches, flower cluster, fruit cluster, number of fruits and total fruit yield/plant, individual fruit weight, amino acid content in leaves gradually decreased while total sugar and reducing sugar content in leaves increased with the increase in salinity levels. BARI tomato-7, CLN-2026, CLN-2413, CLN-2418, CLN-2366 and CLN-2443 had shown better performance with salinity and identified to be better tolerant.

Keywords: Salt tolerance, Morphological, Biochemical and Yield attributes, Tomato genotypes

Location: Bangladesh Institute of Nuclear Agriculture

Start Date: 01-10-2006

End Date: 31-01-2007

Program Area: Variety and Species

Commodity: Tomato

Objectives:

The objective of the study was to identify salt tolerant tomato genotype.

Methodology:

A pot experiment was carried out under three levels of salinity viz, control, 6 and 10 dS/m with eight tomato genotypes viz., J-5, Binatomato-5, BARI tomato-7, CLN-2026, CLN-2366, CLN-2413, CLN-2418 and CLN- 2443 at the pot yard of Bangladesh Institute of Nuclear Agriculture, during October 2006 to January 2007. A total of 72 PVC pots were prepared with 8 kg of soils. Seeds were sown on 5 September, 2006 and 29-day old seedlings were transplanted in the experimental pots in the afternoon of 3 October, 2006. The experiment was laid out in a randomized complete block design with three replications. Urea, TSP and MP of 1.066, 0.933 and 0.722 kg respectively were applied @ urea 400 kg/ha, TSP 350 kg/ha and MP 300 kg/ha and cowdung 12 ton/ha in each pot. Half the doses of urea, full dose of TSP and MP were mixed with the soil. Rest of urea was applied in the soils with two splits at branching and early flowering stages. Uniform care and intercultural operation were done. Salinity was created by adding different amount of Nad in the soil following Michael (1978) and Ponnamperuma (1984). Chlorophyll content in leaves was determined by SPAD meter. Total sugar, reducing sugar and amino acids in leaves were estimated following Dubois et al. (1956), Somogyi (1952) and Yapinlee and Takahashi (1966). Observations were made on the morphological, biochemical and yield attributes of tomato plant. All collected data were statistically analyzed and the means were compared with Duncan's Multiple Range Test at 5 level of significance.

Source of Information: Int. J. Sustain. Crop Prod. 6(1):17-21(April 2011)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The tomato genotypes CLN-2026, CLN-2413, CLN-2418, CLN-2366, CLN-2443 along with BARI tomato-7 showed better yield performance under salinity.

Knowledge Management: Journal