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Flowering Pattern Between Early and Late Maturing Mungbean Genotypes in Kharif-ii Season

Golam Murshed
Former MS student
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh, Bangladesh

Dr. M. A. Samad
Chief Chientific Officer
Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

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

Abstract/ Executive Summary:

A pot experiment was conducted to investigate flower production, flowering pattern, reproductive efficiency, yield attributes and their relationship with seed yield in 10 mungbean genotypes. Results revealed that the high yielding genotypes produced greater number of opened flowers (range 34.2-45.0 plant^-1) having longer flowering duration (range l5-18 days) than the low yielding ones. In contrast, low yielding genotypes produced fewer opened flowers (range 16.1-21.0 plant^-1) and also showed shorter flowering duration (range 11-15 days) and matured 10-15 days earlier than high yielding ones. It was also appeared that high yielding genotypes had higher flower production rate over time than the low yielding ones and maximum flower production occurred within 10-12 days after flowering started. However, high yielding genotypes had inferior performance in reproductive efficiency (range 52.6-61.4%) than in low yielding ones (59.5-81.2%) indicating there is a scope of increasing yield by improving the reproductive efficiency in high yielding genotypes in mungbean. Genotypes MB-17 and MB-35 showed better performance in respect of growth, reproductive, yield and yield contributing characters among the genotypes under study.

Keywords: Mungbean, Maturity, Flowering duration, Reproductive efficiency

Location: Pot yard, Bangladesh Institute of Nuclear Agriculture, Mymensingh

Start Date: 02-09-2007

End Date: 28-11-2007

Program Area: Variety and Species

Commodity: Mungbean

Objectives:

To assess the magnitude and pattern of flower production between early and late maturing genotypes and to investigate the relationship between flower production and synchronous maturity and seed yield.

Methodology:

A pot experiment was conducted at the pot yard of Bangladesh Institute of Nuclear Agriculture, Mymensingh, during the period From September to November, 2007 to investigate flower production, flowering pattern, reproductive efficiency, yield attributes and their relationship with seed yield in 10 mungbean genotypes. The genotypes were MB-16, MB-17, MB-23, MB-35, MB-44, MB-45. MB-46, MB-47, BARImung-4 and BINAmoog-4. The pots filled with well mixing given amounts of urea, triple super phosphate and muriate of potash and gypsum at the rate of 2.18, 4.36, 3.27 and 2.18 g pot^-1 corresponding to 40, 80, 60 and 40 kg ha^-1, respectively. Earthen pots of 30 cm diameter and 35 cm height were used for the experiment. The pots of the experiment were filled with 12 kg of soils. The experiment was laid out in a Completely Randomized Design with four replications. Daily flowers count was recorded from days to flowering start until flowering ceased. At harvest, yield components were recorded. The collected data were analyzed statistically and the means were adjudged by DMRT at 5% level of probability.

Source of Information: MS Thesis by GOLAM MURSHED, Examination Roll No. 06Ag CBot JD-33M, Semester: July-December 2007, Department of Crop Botany, Bangladesh Agricultural University, Mymensingh, Bangladesh

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

High yielding genotypes have higher number of flowers than the low yielders in mungbean and total opened flowers is more important than reproductive efficiency to get higher yield. The flower production depends on branch number, leaf area and total dry mass production in mungbean; and low yield genotypes matured 10-15 days early than high yielding ones due to shorter flowering duration. Two mungbean genotypes viz., MB-17 and MB-35 performed the better in respect of growth (LA and TDM), reproductive (raceme and flower number), yield and yield contributing characters.

Knowledge Management: Thesis