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Superiority of Mungbean Mutants as Compared to Existing Varieties Based on Morpho-physiological and Yield Attributes

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 to assess growth, yield and yield contributing characters of four mungbean genotypes viz., BARI moog2, BINA moog2, MB 29 and MB 43. Results revealed that leaf area, LAI and CGR increased till 60 days after sowing followed by a decline while TDM increased up to maturity. Furthermore, Leaf area, TDM, LAI and CGR differed significantly at all growth stages. In contrast, RGR and NAR had initially high values which then declining in trend up to maturity. The studied genotypes showed significant differences for all the morpho-physiological and yield components. The genotype MB 29 showed superiority in respect of growth parameters like TDM, LAI, CGR, RGR and NAR at most of the growth stages whilst MB 43 showed the inferiority. Furthermore, MB 29 also showed superiority on morphophysiological and yield contributing characters over other three genotypes and it resulted in higher seed yield than in the other three genotypes. In contrast, MB 43 showed the lowest value in case of above studied parameters. The seed yield had positive and significant correlation with leaf area, TDM and number of pods plant^-1.

Keywords: Mungbean, Mutants, Morpho-physiology, Yield

Location: Research farm, BINA HQs, Mymensingh

Start Date: 26-02-2004

End Date: 30-05-2004

Program Area: Crop-Soil-Water Management

Commodity: Mungbean

Objectives:

To evaluate the growth and development of two elite summer mungbean mutants (MB 29 and MB 43) compared to the existing two varieties (BARI moog2 and BINA moog2); and to select better genotype in respect to growth, yield and yield components.

Methodology:

The experiment was carried out with elite summer mungbean mutants with a view to evaluate their growth and yield performance. The experiment was conducted at the field laboratory of Bangladesh Institute of Nuclear Agriculture, Mymensingh, during the period from February to May 2004. The experiment comprised of four genotypes viz., BARI moog2, BINA moog2, MB 29 and MB 43. The first two genotypes (BARI moog2 and BINA moog2) are released varieties recommended for summer cultivation while next two genotypes (MB 29 and MB 43) are promising mutants. The experiment was laid out in a Randomized Complete Block Design with 3 replications. The size of the unit plot was 2 m x 2 m. Plant to plant and row to row distance were maintained at 10 cm and 30 cm, respectively. Urea, triple super phosphate (TSP), muriate of potash (MP) and gypsum were used as source of nitrogen, phosphorus, potassium and sulphur @ 40, 120, 80 and 40 kg ha^-1, respectively. Different intercultural operations were done as and when necessary. To study ontogenetic growth characteristics, a total of six harvests were made and at final harvest, data were collected on some morphophysiological, yield attributes and yield. The first crop sampling was done at 20 DAS and continued at an interval of 10 days up to 70 DAS i.e. till attaining physiological maturity. From each sampling, five plants were randomly selected from each plot and uprooted for collecting necessary parameters. The plants were separated into leaves, stems and roots and the corresponding dry weight were recorded after oven drying at 80 ± 2 0C for 72 hours. The growth analyses like AGR, NAR and RGR were carried out following the formulae of Hunt (1978). The collected data were statistically analyzed and the means were adjudged by DMRT at 5% level of significance.

Source of Information: Book Chapter by M. Monjurul Alam Mondal. 2012. In: Source-sink relationship in mungbean. LAMBERT Acadamic Publishing, Humburk, Germany. ISBN 978-3-8484-4690-2. pp. 54-60.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The advanced mutants MB 29 performed the best among the studied genotypes with respect to growth, yield attributes and yield and may be selected further zonal yield trial.

Knowledge Management: Book