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Reproductive Efficiency in Relation to Nitrate Assimilation in Mungbean

M. Monjurul Alam Mondal, PhD
Principal Scientific Officer
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted with five mungbean varieties to assess relationship between nitrate reductase activity and pod retention percentage. Results indicated that nitrate reductase activity increased with age till flowering start phase and then decline and the lowest NR activity was recorded at physiological maturity stage. More than 70% flowers shed due to less amount of nutrient uptake during reproductive stage by the plant. Therefore, those genotypes should be selected which have capacity to more nutrient uptake at reproductive growth stage.

Keywords: Mungbean, Nitrate reductase, Pod retention

Location: Experimental farm, Bangladesh Institute of Nuclear Agriculture, Mymensingh

Start Date: 20-03-2006

End Date: 31-05-2006

Program Area: Crop-Soil-Water Management

Commodity: Mungbean

Objectives:

To study relation between nitrate reductase activity and pod setting percentage.

Methodology:

The experiment was carried out at the Field Laboratory of Bangladesh Institute of Nuclear Agriculture, Mymensingh, during the period from March 2006 to May 2006. Five mungbean cultivars, Binamung-2, Binamung-5, BARImung-2, BARImung-4 and BARImung-5 were sown with row to row distance 30 cm and plant to plant spacing of 10 cm in 2.5 m x 2.0 m plots in randomized complete block design with three replications. Urea, TSP and MP were applied during final land preparation at the rate of 40, 80 and 60 kg/ha, respectively. Ontogenetic nitrate reductase activity was determined at 10 days interval starting from 20 DAS to 80 DAS. Pod setting against flowers were recorded in 5 selected plants of each variety. The collected data were analyzed statistically.

Source of Information: Book Chapter by M. Monjurul Alam Mondal. 2012. Source-sink relationship in mungbean. LAMBERT Acadamic Publishing, Humburk, Germany. ISBN 978-3-8484-4690-2. pp. 93-100

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Nitrate reductase activity increased with age till flowering start phase and then decline and the lowest NR activity was recorded at physiological maturity stage. More than 70% flowers shed due to less amount of nutrients uptake during reproductive stage by the plant in mungbean.

Knowledge Management: Book