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Evaluation of Waterlogged Tolerant Maize (zea Mays L.) Hybrids in Bangladesh

ABM Khaldun
Oilseed Research Centre, Bangladesh agricultural Research Institute

MQI Matin
Plant Breeding Division, Bangladesh agricultural Research Institute

AKM Zonayed-Ull-Noor
Seed Technology Division, Bangladesh agricultural Research Institute

MK Alam
Plant Breeding Division, Bangladesh agricultural Research Institute

ME Hoque
Hill Tract Agricultural Research Station, Bangladesh agricultural Research Institute

MM Rohman
Plant Breeding Division, Bangladesh agricultural Research Institute

Abstract/ Executive Summary:

Four imported and popular hybrids along with one new hybrid of CIMMYT (Pacific-60, Pinacle, 900M Gold, Uttaran-2 and CML₂₅₄XCML₂₄₇) were evaluated to develop waterlog tolerant maize variety during Kharif-I season in 2013. This experiment was conducted at Bangladesh Agricultural Research Institute (BARI), Joydebpur and four more regional stations of BARI with RCBD experimental design. The entries (30 commercial hybrid varieties of private seed companies, NGOs and BARI, and more than 200 inbreds from CIMMYT and BARI own developed germplasm) were initially screened out through cup method in control condition at Joydebpur to find the excess water tolerant varieties and lines for last consecutive two years. From cup screening results, these five hybrids were found water stress tolerant and taken to multi-location performance over five locations in Bangladesh. Days to maturity, Plant height, Ear height and Yield found statistically significant over the locations. Among the hybrids Uttaran-2 found the highest yielder (7.10 t/ha) followed by 900 M Gold (6.77 t/ha) and Pinacle (6.43 t/ha). In case of days to maturity, Pinacle found the shortest duration (95.2 days) followed by Pacific60 and Uttaran-2. For the Kharif season, Burirhat, Rangpur region found more suitable location for waterlog tolerant maize production compared to others. From the results of qualitative characters like leaf rolling, leaf yellowing, number of brace root etc. Uttaran-2, 900M Gold and Pinacle found capable surviving in the water logged condition. Considering the yield and yield contributing characters Uttaran-2, 900M Gold and Pinacle found promising hybrids and Burirhat could be good choice for farmers producing summer maize hybrids.

Keywords: Water stress, Inbred lines, Hybrid, Maize

Location: Barisal, Burirhat (Rangpur), Gazipur, Jamalpur and Satkhira

Start Date: 00-03-2013

End Date: 00-07-2013

Program Area: Variety and Species

Non-commodity: Performance

Objectives:

The objective of present study was to determine water stress tolerant maize variety development in rain fed condition.

Methodology:

Performance of five hybrids Pacific-60, Pinacle, CML254XCML247, 900M Gold and Uttaran-2 was examined at Barisal, Burirhat (Rangpur), Gazipur, Jamalpur and Satkhira of Bangladesh from March to July 2013 following randomized complete block design with 3 replications to examine their waterlogging tolerance. Each plot comprises of 5 rows of 5 meter long. Fertilizers were applied at the rate of 150 kg N, 32 kg P, 64 kg K, 20 kg S, 2.8 kg Zn, respectively. 50 % N was applied at the time of sowing and remaining 50% at about V9V10 stage (40 DAS). After 35-40 DAS water logging condition was created for 5 days and then the water was drained out. All weeds and pests and diseases were controlled as and when required. Data on yield and other desirable characters were recorded on days to tasseling, days to silking, days to maturity, plant height and ear height. Yield was taken as whole plot basis. For convenience, plot yield was adjusted with moisture percentage and optimum plant number and it was converted to t/ha. Some qualitative traits like brace roots and their position, leaf senescence (LS), root lodging (RL) and stalk lodging (SL) along with some disease incident like leaf rolling (LR) and Leaf yellowing were also recorded. Data were analyzed with Cropstat 7.2 software.

Source of Information: Eco-friendly Agril. J. 10(05):71-75, 2017 (May)

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Hybrid maize can grow all the year round, but excess water during Kharif season is a limiting factor in Bangladesh. A vast area remains under cover of waterlogged condition. Excess water tolerant hybrid maize varieties could be the better alternative to the farmer increasing the maize production in Bangladesh. Considering all the maize yield contributing characters to excess water tolerant parameters Uttaran-2, 900M Gold and Pinacle can be recommended as less susceptible to excess water stress varieties. For more authentications similar experiment can be taken with these varieties in Kharif season with few other more locations.

Knowledge Management: Journal