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

Physiology of Seed Yield in Mungbean: Growth and Dry Matter Production.

Dr. M A Samad
Chief Scientific Officer
Plant Breeding Division, Banglaesh Institute Of Nuclear Agriculture, BAU Campus, Mymensingh-2202

M A M Mondal
PSO
Crop Physiology Division, Banglaesh Institute Of Nuclear Agriculture, BAU Campus, Mymensingh-2202

M S A Fakir
Professor
Crop Botany Derpartment, BanglaDesh Agricultural University, Mymensingh-2202

M Nurul Islam
Professor
Department of Botany, Dhaka University, Bangladesh

Abstract/ Executive Summary:

Growth rate of mungbean was very slow during the vegetative phase in all the four genotypes. A relatively smaller portion of total dry matter (TDM) was produced before flower initiation and the bulk of it after anthesis. The maximum crop growth rate (CGR) was observed due to maximum leaf area (LA) development during the pod filling stage in all the genotypes. LA and CGR contributed to the superior TDM production. It appeared that a high yielding mungbean genotype should possess larger LA, high TDM production ability, superior CGR at all growth stages, high relative growth rate and net assimilation rate at the vegetative stage as superior yield components.

Keywords: Seed yield, Mungbean, Growth, Dry matter

Location: Field Labrotory, Bangladesh Agricultural University(BAU, Mymensingh

Start Date: 00-02-2008

End Date: 00-05-2009

Program Area: Seed Technology

Commodity: Mungbean

Objectives:

To study of crop growth and yield parameters and the partitioning of assimilates into seed formation would help to expedite yield improvement of field crops.

Methodology:

Experiment were performed at the Field Laboratory, Bangladesh Agricultural University (BAU), Mymensingh (24⁰8’ N 90⁰ 0’ E), Bangladesh in Kharif- I (February-May) season of 2008 and 2009. Four mungbean (Vigna radiata (L.) Wilczek genotypes of which two high (MB-35 and MB-45) and two low (MB-16 and MB-43) yielding were used as planting material. The soil of the experimental area of BAU was silty loam having a total nitrogen 0.06%, organic matter. 1.15% available phosphorus 18.5 ppm, exchangeable potassium 0.28 meq/100g, sulphur 18ppm and pH 6.8 Seeds were sown on 14 and 12 March for the year of 2008 and 2009, respectively. A RCB design with three replications was followed in both the years. A unit plot size of 4 m x 3 m with plant spacing of 30 cm x 10 cm was used. Seeds were sown in line and two weeks after germination, the plants were thinned to a density of 30 plants/m². Cultural practices were the same in both the seasons. Urea, triple superphosphate, muriate of potash and gypsum were used as a source of nitrogen, phosphorus, potassium and sulphur at the rate of 40, 120, 80 and 30 kg/ha, respectively at the time of final land preparation. First weeding was done following by thinning at about 21 days after sowing (DAS). One irrigation was given at 25 DAS at both the locations. Insecticide (Ripcord 50 EC @ 0.025%) was sprayed at the flowering and the fruiting stage (55 DAS) to control shoot and fruit borer. To study ontogenetic growth characteristics, a total of seven harvests were made in 2008 and six harvests in 2009 because, plants matured seven days earlier in 2009 than in 2008. The second and third rows of each plot were used for sampling. The first crop sampling was done at 25 DAS and continued at an interval of eight days up to 72 DAS in 2008 and 65 DAS in 2009 i.e. till attaining physiological maturity. from each sampling, a unit area of 0. 3 m² in two adjacent rows of 0.5 m (10 plants) were randomly selected from each plot and uprooted for collecting necessary parameters. The plants were separated into roots, stems, leaves and pods, and the corresponding dry weights were recorded after oven drying at 80 + 2⁰C for 72 hours. The leaf area of each sample was measured by automatic leaf area meter (Model: LICOR 3000, USA). The growth analysis was carried out following the formulae of Hunt (1978). The yield contributing characters were recorded at harvest from ten competitive plants of each plot. The seed yield was recorded from five rows of each plot (1.50 m x 3.0 m) and converted into seed weight/plant by dividing the plant number. The collected data were analyzed statistically by using computer package programme, MSTAT-C.

Source of Information: Bangladesh J. Bot. 40(2): 133-138, 2011 (December)

Article Link (Online Journal):

Funding Source:

1. Asian Development Bank

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It appeared that a high yielding mungbean genotype should possess larger LA, high TDM production ability, superior CGR at all growth stages, high relative growth rate and net assimilation rate at the vegetative stage as superior yield components.

Knowledge Management: Journal