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Screening of Mungbean Genotypes for Tolerance to Waterlogging Under Field Condition

M. R. AMIN
On-Farm Research Division, Bangladesh Agricultural Research Institute, Gazipur-1701

M. A. KARIM
Department of Agronomy, Bangabandhu Sheikh mujibur Rahman University, Gazipur-1706,

Q. A. KHALIQ
Department of Agronomy, Bangabandhu Sheikh mujibur Rahman University, Gazipur-1706

M. R. ISLAM
Department of Agronomy, Bangabandhu Sheikh mujibur Rahman University, Gazipur-1706

S. AKTAR
Pulse Research sub-station, Bangladesh Agricultural Research Institute, Gazipur-1701, Bangladesh.

Abstract/ Executive Summary:

Forty mungbean genotypes were evaluated in the field of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh during April to June, 2010. Objective of the study was to observe the genotypic differences of mungbean cultivars and to identify their ability to tolerate to the waterlogged stress under field condition. After termination of waterlogging (28 DAE), a significant number of plants of each genotypes were found to survive. During 10-days recovery period (38 DAE), the number of plants of each genotype greatly reduced due to seedling mortality. Finally, a number of plants of each mungbean genotype were survived till maturity. The percentage of plant survival was calculated. Among the total number of genotypes, only 15 genotypes namely, IPSA-13 (entry no.26), IPSA-15 (entry no.27), VC-3173 (B-10) (entry no.28), VC-6367 (44-55-2) (entry no.29), ACC-12890054 (entry no.30), ACC-12890085 (entry no.31), GK-1(entry no.32), GK-3 (entry no.33), GK-63 (entry no.34), GK-48 (entry no.35), GK-65 (entry no.36), BU mug 2 (entry no.37), CO-3 (entry no.38), VC-6173A (entry no.39), VC-3160(A-89) (entry no.40) showed 20-34% survival, and the rest 25 genotypes had survival of <20%. Lawn and Russel (1978) reported that after emergence, the stand establishment of the mungbean crop may reduce to 65- 100% for eight days waterlogging at second trifoliate leaf stage. Some plants were taller viz. IPK-1040-94 (entry no.3), ML- 613 (entry no.5), GK-46 (entry no.11), PDM-11 (entry no.23), ACC-12890054 (entry no.30), ACC-12890085 (entry no.31), GK-63 (entry no.34), GK-48 (entry no.35), CO-3 (entry no.38) and some were shorter viz. GK-29 (entry no.19), GK-55 (entry no.20), VC-6367 (44-55-2) (entry no.29), GK-1 (entry no.32), GK-48 (entry no.35) under control condition but significant reduction in plant height of all the waterlogged treated genotypes was observed. The difference in plant height of waterlogged plants were increased to a great extent during 10 days recovery period and less reduction in plant height over the control was recorded 35.59% in BARI mung 6, 76% in BARI mung 5, 29.33%, in GK-6 and 3.85% in BU mug 2.

Keywords: Mungbean genotypes, Screening, Waterlogging tolerance.

Location: Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh

Start Date: 00-04-2010

End Date: 00-06-2010

Program Area: Variety and Species

Commodity: Mungbean

Objectives:

The study was carried out to observe the genotypic differences of mungbean cultivars and to identify their ability to tolerate to the waterlogged stress under field condition.

Methodology:

Forty mungbean genotypes were evaluated in the field of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh during April to June, 2010. The experiment was set up in split plot design with three replications. The plants were subjected to 3-5 cm standing water for 7-days at 22 days after sowing above the soil surface. At the same time the optimal soil moisture was provided to the plants retained as control to observe the difference of growth and convenient for data collection. The depth of water in the experimental plots was maintained by using polythene sheet in the border of each main plot along with continuous supply of water. Drain in between two main plots was 1m so that water cannot soak to the neighboring experimental plots. The performance of the selected mungbean genotypes were compared with that of control. A blanket rate of fertilizers 40-25-35 kg ha^-1 of N-P-K and 10 t ha^-1 cowdung was applied and thoroughly incorporated into the soil of each plot at the time of final land preparation. Seeds of uniform size and shape of mungbean genotypes were sorted from their stock and treated with Vitavex 200 at 1g per kg seed. The seeds were soaked in water for 4 hours before sowing and imbibed seeds were selected for sowing. Seedlings were thinned out after one week of emergence keeping one healthy seedlings per hill. Management practices and plant protection measures were taken as and when necessary. Five plants both from control and waterlogging treatments were harvested after 28 and 38 days from their corresponding emergence dates and data were collected. Height of individual plants was measured from the base to the top of main shoot. After harvesting, the seedlings of both waterlogged and controls were segmented into components i.e. stem, leaf, petiole, and reproductive organs. The segmented parts were oven dried at 80⁰C for 72 hours to a constant weight and dry weights were recorded separately. Total dry weight was calculated by summing up the dry weights of stem, leaf, petiole, and reproductive parts of plants. Leaf area was measured using automatic leaf area meter (Model AAM-8. Hayashi Denkoh Co. Ltd., Tokyo, Japan). The screening criterion of the genotypes was based on survival % after removal of the flooding stress. Their survival percentage was recorded on the 28 DAE, 38 DAE and 48 DAE after termination of flooding. Plant survival percentage of each genotype was calculated by the following formula, Survival (%) =The no. of plants of each genotype survived after 7-day waterlogging/Total plants of each genotype present at the beginning of waterlogging x100

Source of Information: Bangladesh J. Agril. Res. 40(3): 513-519, September 2015 ISSN 0258-7122

Article Link (Online Journal): http://www.banglajol.info/index.php/BJAR/article/view/25426/17077

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Accumulation of higher TDM in waterlogged plants over the control was observed in some mungbean genotypes which might tolerate soil flooding to a great extent.

Knowledge Management: Journal