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Response of Wheat Genotypes to Nacl Salinity

Ferdoushi Rahaman
MS student
Department of Genetics & Plant Breeding, Patuakhali Science & Technology University, Dumki, Patuakhali, Bangladesh

Abstract/ Executive Summary:

A genotype-environment interaction study was carried out at Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Rahmatpur, Barisal in 2007-2008 with twelve genotypes of wheat under five different salinity levels as 4, 8, 12, 16 dS/m and control to find out their level of tolerance. Growth and yield response of the genotypes to salinity levels exhibited significant variation for yield per plant and yield contributing characters suggesting the presence of genetic variation among the genotypes. The salinity levels also significantly influenced the growth, yield and yield attributing characters. Grain yield greatly decreased with increase in salinity and the magnitude differed depending upon the tolerance levels of the genotype. Out of them three genotypes G24, G33 and G40 shows highest in all cases. The highest yield (8.82 g/plant) was found in G40 followed by G33 (8.81 g/plant) at control condition and G40 (8.43 g/plant) at 4 dS/m. Considering all genotypes at different salinity levels G40 performed the best, followed by G33 and G24 in respect of yield.

Keywords: Salinity level, Growth, Yield, Rsponse, Wheat

Location: RARS, Rahmatpur, Barisal

Start Date: 01-01-2007

End Date: 31-12-2008

Program Area: Crop-Soil-Water Management

Commodity: Wheat

Objectives:

To find out the effects of salinity on growth, yield and yield components of different genotypes.

Methodology:

The experiment was conducted at the field lab of the Regional Agricultural Research Station, Rahmatpur, Barisal which lies at the 22⁰42² North latitude and 90⁰23² East longitude at an elevation of 4 meter above the sea level. It belongs to the Non-calcareous Grey Floodplain Soils (Non saline, Ganges Tidal Alluvium) under AEZ 13 (BARI, 1997). The experiment comprised of twelve genotypes of wheat collected from Wheat Research Centre (WRC), Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur and five doses of salinity: 0 (control), 4, 8, 12, 16 dS/m in pot culture under natural light during crop seasons of 2007-08. The experiment was set up in a randomized complete block design (RCBD) with three replications consisting of two factors namely genotype and salinity level.Salt solution was prepared artificially by dissolving calculated amount of commercially available NaCl with tap water to make NaCl solution. The salt solution was applied with an increment of 40 mM at every alternate day till the respective concentrations were attained. Plants in control were irrigated with tap water. Treatment solution was applied in excess so that extra solution dripped out from the bottoms of the pots. Treatments began 12 days after sowing and were continued for 10 days, after which the pots were flushed with tap water to leach out the accumulated salt and the plants were irrigated with tap water until maturity (Ashraf et al, 1990).

Source of Information: J. Patuakhali Sci. and Tech. Univ. 2012, 3(2):17-23

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Considering all genotypes at different salinity levels G40 performed the best, followed by G33 and G24 in respect of yield.

Knowledge Management: Journal