Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Response of Soybean to Salinity

Dr. M. Abdul Karim
Professor
Department of Agronomy, BSMRAU, Gazipur

Abstract/ Executive Summary:

Salinity decreased the total dry weight of the genotypes. Out of 170 genotypes 13 genotypes produced more then 80% total dry matter (TDM) which were considered as the tolerant ones, 15 genotypes produced 70-80% TDM which were grouped as moderately tolerant, 63 genotypes produced 50-70 % TDM which were moderately susceptible and the rest 79 genotypes had less than 50 TDM which were considered as the susceptible group.

In the next experiment, genotypes BD 2342, AGS 313, G 00209, G 00028, G 00283 of tolerant group, genotypes PK 416, AGS 399 and G 00138 of moderately tolerant group, genotypes BARI soybean and Shohag of moderately susceptible group and genotypes Bangladesh soybean 4 and G 00046 of susceptible group were grown in pots and treated with 0, 50 and 100 mM NaC1 till maturity. It was observed that tolerant group of genotypes maintained their superiority in the production of yield and yield contributing characters. The higher yield of the superior genotypes was attributed to the production of higher number of pods per plant and greater number of seeds per pods. The tolerant genotypes accumulated minimum amount of Na ion in the shoot, while larger amount of the ion in the roots. On the contrary the susceptible genotypes accumulated greater Na in the shoot while minimum in the roots. Similar trend was also noticed in case of Cl ion. In case of K, the tolerant group of genotypes accumulated higher amount compared to that of susceptible ones. Consequently the Na:K ratio of the tolerant group of genotypes was much smaller than that of susceptible group.

It was concluded that the high salt-tolerance of some genotypes was associated with the maintenance lower Na in the shoot keeping larger amount in the roots. The higher Na:K ration in the shoot of the susceptible genotypes created imbalance in mineral ions concentrations in plant tissues.

Keywords: Soybean, Salinity

Location:

Start Date: 01-07-2007

End Date: 30-06-2008

Program Area: Crop-Soil-Water Management

Commodity: Soybean

Objectives:

to examine the variation in salt tolerance among 170 soybean genotypes
to analyze the effect of salinity on growth dynamics and yield performance of the crop
to clarify the salt tolerance mechanisms of soybean

Methodology:

Seeds of 170 soybean genotypes were grown in pots of 24cm X 30cm in size containing 12 kg air dried soil inside vinylhouse under natural light. At the appearance of 1st trifoliate, 14 days after seed sowing, sufficient amount of salt solution, prepared by dissolving NaCl in tap water, was applied in each pot. The concentration of salt solution was 150 mM NaCl and tap water was the control. After 30 days of sowing the plants were harvested and dry weights of stem, petiole, shoot, leaf, roots and total plant were recorded. Salt tolerance was evaluated by using the relative total shoot dry (RSTDW) weight using the following formula‑

Total dry weight of salt treated plant

RTDW (%) = X100
Total dry weight of the control plant

Based on the result the genotypes BD 2342, AGS 313, G 00209, G 00028 and G 00283 were found tolerant, genotypes PK 416, AGS 399 and G 00138 were moderately tolerant, genotypes BARI soybean and Shohag were moderately susceptible and genotypes Bangladesh soybean 4 and G 00046 were susceptible. These genotypes were grown treated with 0, 50 and 100 mM NaC1 till maturity. Yield, yield parameters, dry matters in different plant parts, Na, K and Cl and water relation traits were recorded.

Source of Information: Summary Report of Research Review Workshop (2008-09)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Soybean (Glycine max L) is one of the leading oilseed crops of the world. Soybean seeds contain almost 30-50% protein, 14-24% fat, 14-24% carbohydrate, 3-6% fiber, 3-6% ash and appreciable amount of vitamins. It is leguminous crop, fixes environmental nitrogen and improves the soil quality.

Recently soybean cultivation is getting popular in the southern part of Bangladesh, especially in Noakhali. However, the salinity appears as the most serious problem for the potential harvest and further expansion of the crop. To improve productivity of soybean in the saline area, it is imperative to identify salt tolerant genotypes and to clarify the salt-tolerance mechanisms of the crop, which arrested initiation of the present program

Knowledge Management: Report/Proceedings