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Multi-environment Variety Testing (pre-met) for Irrigated Ecosystem in Rice (oryza Sativa L.)

Md. Maksudul Haque
Scientific officer (Golden Rice)
Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh

M Anisuzzaman
Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh

M.M. Emam Ahmed
Scientific officer
Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh

Partha S Biswas
Postdoctoral Fellow
Rice Breeding & Molecular Breeding, Plant Breeding Division, International Rice Research Institute, Los Banos, Philippines

Md. Ansar Ali
Director Research
Bangladesh Rice Research Institute, Gazipur, Bangladesh

Abstract/ Executive Summary:

A set of 100 IRRI bred advanced breeding lines were tested at Gazipur (as moderate productive control site) and at Habiganj (as high productive site) following row-column design with 2 replications. The breeding lines were highly variable in days to maturity and plant height but not in grain yield. However, the interaction effects between genotype and environment (GXE) were significant for all three traits. At Gazipur, the breeding lines yielded with a range between 3.3 to 7.3 t/ha with a growth duration range of 138-154 days, while at Habiganj they yielded 5.1-7.9 t/ha with a growth duration of 139-159 days. The highest yielding genotype was IR99092-B-B-78 followed by IR13A390, IR99061-B-B-7, IR14D111, etc at Gazipur, while IR13A390 followed by IR100008-91-B yielded the highest at Habiganj site. Based on yield and growth duration, 22 breeding lines showing better performance at Gazipur, 9 lines at Habiganj, and 2 lines for both locations were selected for further evaluation.

Keywords: Multi-environment, Irrigated ecosystem, Rice

Location: BRRI Gazipur and BRRI Habiganj

Start Date:

End Date:

Program Area: Variety and Species

Commodity: Rice

Objectives:

To isolate breeding lines with high yield potential and acceptable grain quality.

Methodology:

A total of 100 IR lines were evaluated along with standard check varieties, BRRI dhan28 and BRRI dhan29 at BRRI Gazipur and BRRI Habiganj. BRRI Habiganj was considered a highly productive site and BRRI Gazipur was used as a moderate productive control site. The trial was conducted in Row-Column Design with 2 replicates. Thirty-five-day-old seedlings were transplanted at 20 X 20 cm using a single seedling per hill in 5.4 m X 6 rows plots. Gap filling was done within 7 days of transplanting. Fertilizer management was done using 260:100:120:110:11 kg Urea, TSP, MP, Gypsum, and ZnSO₄/ha. Urea was applied in three equivalent splits at 15 days after transplanting (DAT), 30 DAT, and 5 days before the PI stage. The total amount of TSP, MP, Gypsum, and ZnSO₄ was applied at the final land preparation. Weed, insect pest, and disease management were done as when the necessary following standard protocol for Boro rice described in AdhunikDhanerChash (Modern Rice Cultivation) of BRRI. Data on PAcp at maximum tillering and maturity stage, days to flowering and maturity, plant height, panicle length, panicles/hill, yield (t/ha), lodging and disease, and insect infestation were recorded.

Source of Information: International Journal of Sustainable Agricultural Research, 2017, 4(1): 9-15

Article Link (Online Journal): DOI: 10.18488/journal.70/2017.4.1/70.1.9.15

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The breeding lines were highly variable in days to maturity and plant height but not in grain yield. However, the effects of GXE were significant for all three traits. At Gazipur, the breeding lines yielded with a range between 3.3 to 7.3 t/ha with a growth duration range of 138-154 days, while at Habiganj they yielded 5.1-8.7 t/ha with a growth duration of 139-159 days. The highest yielding genotype was IR99092-B-B-78 followed by IR13A390, IR99061-B-B-7, IR14D111, etc at Gazipur, while at Habiganj site IR13A390 followed by IR100008-91-B yielded the highest. Based on yield and growth duration, 22 breeding lines showing better performance at Gazipur, 9 lines at Habiganj, and 2 lines for both locations were selected for further evaluation

Knowledge Management: Journal