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Salinity Induced Changes in Yield of Selected Mustard Genotypes

S.N. Mahfuza
SO
Agronomy Division, Gazipur

F.Ahmed
SSO
Agronomy Division, Gazipur

Abstract/ Executive Summary:

The experiment was carried out in vinyl house of Agronomy field at Bangladesh Agricultural Research Institute, Joydebpur, Gazipur during rabi season of 2012-2013 to examine the variation in salt tolerance of selected mustard genotypes up to maturity .Four mustard genotypes (DB-9069, BD-9093, BARI Sarisha-11 and BARI Sarisha-14) were tested for their salt tolerance at different degrees of salinity (0, 5, 7.5 and 10 dS/m of NaCl). Genotypes were greatly influenced by salinity with respect to root dry weight, shoot dry weight and yield over control. Among the four genotypes, BARI Sarisha-14 and BD 9093 perform better in respect of relative root dry weight, relative shoot dry weight and yield component than the other genotypes.

Keywords: Salinity, Yield, Mustard genotypes

Location: Joydebpur, Gazipur

Start Date: 00-00-2012

End Date: 00-00-2013

Program Area: Variety and Species

Commodity: Mustard

Objectives:

To find out the effect of salinity levels on root dry weight, shoot dry weight and yield of selected mustard genotypes up to maturity in pot culture.

Methodology:

The experiment was carried out in vinyl house of Agronomy field at Bangladesh Agricultural Research Institute, Joydebpur, Gazipur during rabi season of 2012-2013. Four selected (BD 9069, BD 9093, BARI Sarisha-11 and BARI Sarisha-14) out of 50 genotypes of mustard screened in laboratory under Hoagland nutrient solution culture were used in the study at 0, 5, 7.5 and 10 dS/m of Nacl solution. Plastic pots (top dia 76 cm, bottom dia 74 cm and height 30 cm) were filled with soil and cow dung in 4:1 volume ratio and final weight of pot was 13 kg. N120 P35 K65 S25 Zn2 B1kg/ha in the form of urea, triple super phosphate, muriate of potash, zypsum, zinc sulphate and boric acid were incorporated in the soil. Ten seeds of each genotypes were sown in each pot on 25 November 2012. Thinning of seedling was done at 10 day after sowing by keeping four plants for each pot. The pots were irrigated with tap water to grow crop without moisture stress. The study was evaluated under completely randomized design (factorial) with four replications. Fifteen days after sowing, salt solutions were applied in treated pot. Salt solution was prepared artificially by dissolving calculated amount of commercially available NaCl with tap water to make 5.0, 7.5 and 10.0 dS/m solution. Tap water was used as control and its EC was 0.3 dS/m. The salt solution was applied with an increment of 2.5 dS/m in every alternate day till respective salinity level of 5, 7.5 and 10 dS/m were attained. Treatment solution was applied in excess so that the extra solution dripped from the bottom of the pots. The root and shoot sample were collected prior to harvest. The collected sample was oven dried at 80⁰C, for 72 hours. For root sampling, plastic pots were soaked in water, soil was washed with water and the roots were recovered by passing the soil water suspension through a 2mm mesh sieve. The yield and yield component data were collected from five randomly selected plants from each treatment at harvest. Data were analyzed following MSTAT program and means were compared using LSD test.

Source of Information: BARI Annual Report, Agronomy Division 2012-2013, BARI

Article Link (Online Journal):

Funding Source:

1. Asian Development Bank

Budget: 20,000/-

Total Budget (Tk.) : 20,000/-

Achievement/Findings:

Genotypes were greatly influenced by salinity with respect to root dry weight, shoot dry weight and yield over control. Among the four genotypes, BARI Sarisha-14 and BD 9093 perform better in respect of relative root dry weight, relative shoot dry weight and yield component than the other genotypes.

Knowledge Management: Report/Proceedings