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

Effect of Temperature on Flower and Pod Abscission and Yield of Three Soybean Genotypes

A. B. M. A. Hoque
Department of Environmental Science, Bangladesh Agricultural University, Mymensingh.

M. M. Hassan
Department of Environmental Science, Bangladesh Agricultural University, Mymensingh.

M. M. K. Khan
Soil Science Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh.

R. Khatun
Department of Environmental Science, Bangladesh Agricultural University, Mymensingh.

M. A. Baten
Department of Environmental Science, Bangladesh Agricultural University, Mymensingh.

Abstract/ Executive Summary:

A pot experiment was conducted at Soil Science Division, Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh, during January to April 2014 to investigate the growth, abscission of flower and pod and yield performance of three soybean varieties ( BINA Soybean - 1, BINA Soybean - 2, and Shohag) under three different temperature conditions. Flower abscission number and percentage were maximum in elevated temperature but the abscission of pods plant^-1 was found to be the maximum in ambient temperature. In case of the performance of varieties, tallest plant and maximum node plant^-1 were noted from the variety Shohag but number of nodules plant^-1, number of seeds pod^-1, weight of 100 seed and seed yield was highest in BINA soybean –2 while BINA soybean–1 had maximum flowers plant^-1 and pods plant^-1. Abscission of flowers plant^-1 was maximum in BINA soybean–1 under elevated temperature while similar variety grown under ambient temperature obtained the maximum abscission of pods plant^-1 and the variety Shohag grown under elevated temperature noted the maximum abscission percentage of flower at all the data recording stages. These results suggested that ambient temperature and BINA soybean – 2 singly or their interaction would be the most significant compared to others.

Keywords: Morpho–physiological attributes, Temperature effect, Varietal effect, Yield attributes

Location: Pot experiment, BINA, Mymensingh

Start Date: 00-01-2014

End Date: 00-05-2014

Program Area: Crop-Soil-Water Management

Commodity: Soybean

Objectives:

To assess the effect of temperature on flower and pod abscission of soybean and their yield at the three temperature conditions (ambient, high, and cool).

Methodology:

The pot experiment was conducted in a controlled plant growth chamber and open field at the field laboratory of the Department of Soil Science, Bangladesh Institute of Nuclear Agriculture (BINA) during the period from January to May 2014. The experimental area was under the subtropical climate, which was characterized by moderately low temperature during Rabi season (October to March) and scanty rainfall associate with high temperature, high humidity and heavy precipitation with occasional gusty winds in Kharif-1 season (April to July) under Old Brahmaputra Flood Plain Agro-Ecological Zone. The soil was silty loam in texture having pH 6.7. Three soybean genotypes viz., BINA soybean-1, BINA soybean-2, Shohag (PB-1) were used as planting materials. Thirty six pots were prepared and their individual weight was recorded. Three seeds were sown by hand at a depth of 0.01m on 15 January 2014 in each pot with the aim of growing one plant up to maturity. After germination, one healthy seedling was kept in each pot at 20 DAS. The experiment was laid out in CRD with three temperature treatments as ambient, elevated and cool condition with four replication. Out of 36 pots, the 12 pots were placed in elevated condition and another 12 pots were in cool condition. The rest 12 pots were placed in ambient condition. Irrigation was done two times a day at morning (8.00 am) and afternoon (5.00 pm). Air temperature was recorded in a clear sunny day with Psychrometer (Testo 615, GM 295-14770, German) at one hour interval from 10 am to 4 pm on the month of March, 2014. Plant height, node number plant^-1, nodule number plant^-1, flower number plant^-1, pod number plant^-1, seed number plant^-1, seed weight plant^-1 were recorded after final harvest. The data were analyzed statistically and the means were adjusted by DMRT at 5% level of significance.

Source of Information: J. Environ. Sci. & Natural Resources, 8(2): 89-92 2015, ISSN 1999-7361

Article Link (Online Journal): DOI: http://dx.doi.org/10.3329/jesnr.v8i2.26872

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

This study clearly indicated that the ambient temperature and the variety BINA soybean–2 singly or their interaction would be the most significant than other studied temperature stress condition and varieties regarding growth, yield, contributing characters and yield of soybean.

Knowledge Management: Journal