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Breeder Seed Production of Rice During 2007-2008.

Dr. Md. Khairul Bashar,
Chief Scientific Officer and Head
Genetic Resources and Seed Division, BRRI, Gazipur-1701, Bangladesh.

M. S. Ahmed
Senior Scientific Officer
Genetic Resources and Seed Division, BRRI, Gazipur-1701, Bangladesh.

E. S. M. Harunur Rashid,
Scientific Officer
Genetic Resources and Seed Division, BRRI, Gazipur-1701, Bangladesh.

Dr. Mohammad Khalequzzaman,
Principal Scientific Officer
Genetic Resources and Seed Division, BRRI, Gazipur-1701, Bangladesh.

Abstract/ Executive Summary:

Each variety was sown from nucleus stock using intact panicles (panicle to row method) in BRRI, Gazipur and broadcast method in BRRI regional stations and transplanting using single seedling per hill. A total of 103.59 tons of breeder seed in T. Aman and 84.29 tons in Boro seasons were produced. On the other hand, a total of 15.43 tons of breeder seed in T. Aman and 30.27 tons in Boro and 2.97 tons in Aus seasons were distributed. Besides, 13.96 ton truthfully labeled seeds from 18 varieties of T. Aman and 14.50 ton truthfully labeled seeds from 9 varieties of Boro (previous year’s unsold breeder seeds and less quality graded portion of breeder seed) were available for distribution. BRRI has been supplying breeder seed through the BRRI’s Rice Seed Network to the partner organizations for producing foundation seed. Moreover, now BADC produces foundation seed in one stage instead of previously practiced two stages (foundation stage 1 and foundation stage 2). Therefore, BRRI will need to produce more quantity of breeder seed in every year.

Keywords: Breeder seed, Production, Rice.

Location: BRRI Gazipur and BRRI regional stations (R/S).

Start Date: 01-07-2007

End Date: 30-06-2008

Program Area: Variety and Species

Commodity: Rice

Objectives:

To produce and supply of breeder seed of BRRI varieties as per indent of GO, NGOs and PS seed producing organizations/companies

Methodology:

Each variety was sown from nucleus stock using intact panicles (panicle to row method) in BRRI, Gazipur and broadcast method in BRRI regional stations. During transplanting in T. Aman and Boro seasons, each variety was grown using single seedling per hill. Fertilizers were applied @ 80:60:40 kg NPK/ha in T.Aman and @ 100:60:40 kg NPK/ha in Boro seasons along with Gypsum @100 kg/ha, and Zinc sulphate @10 kg/ha, respectively. Roguing was done with proper record keeping. At seedling stage, plants outside the row, plants with different height and plants with different color and shape from standard (true to the type) were rogued. At maximum tillering stage, plants with different leaf color, shape and angle, plants with different height and plants with different leaf sheath color were rogued. Finally, at flowering stage, grain with different size, shape and color from the standard (true to the grain type of the produced variety) were rogued. Panicles from standard plants for each variety were harvested, dried and kept separately as nucleus stock for the next year. The panicles were kept as intact for growing breeder seed in BRRI, Gazipur, while remaining panicles for regional stations were kept after threshing. The plots were mass harvested to preliminary consider as breeder seed after getting ‘field certificate’ from Seed Certification Agency (SCA). After harvest, the seed of each variety were threshed, dried, cleaned separately and stored in polythene coated gunny bag in the seed store room with controlled temperature (20°C with 60% RH) at BRRI, Gazipur. The harvested seed then finally offered as seed lot for getting the laboratory certificate along with ‘Breeder seed tag’ from SCA.

Source of Information: Proceedings of BRRI Annual Internal Research Review, 2007-08, Genetic Resources and Seed Division, BRRI, Gazipur-1701.

Article Link (Online Journal):

Funding Source:

1. Government	Budget:
2.	Budget:

Total Budget (Tk.) :

Achievement/Findings:

A total of 103.59 tons of breeder seed of which 19.30 tons from 19 varieties in T. Aman and 84.29 tons from 9 varieties in Boro seasons were produced during 2007-08. On the other hand, a total of 15.43 tons of breeder seed from 16 varieties in T. Aman and 30.27 tons from 7 varieties in Boro and 2.97 tons from 8 varieties in Aus seasons were distributed during 2007-08 from previous year’s stock. Besides, 13.96 ton truthfully labeled seeds from 18 varieties of T. Aman and 14.50 ton truthfully labeled seeds from 9 varieties of Boro (previous year’s unsold breeder seeds and less quality graded portion of breeder seed) were available for distribution. Moreover, 58.60 tons of TLS were produced under “17.15% yield increase program” for rice at BRRI HQ and regional stations, while 6.79 ton seeds from 15 varieties of T. Aman, 7.44 ton seeds from 9 varieties of Boro and 30 Kg from three varieties from Aus were distributed as quality seed (TLS) during 2007-08, respectively. BRRI has been supplying breeder seed through the BRRI’s Rice Seed Network to the partner organizations for producing foundation seed and subsequently certified seed (CS)/truthfully labeled seed (TLS), which could partly satisfy the increasing national demand of quality seed. Moreover, now BADC produces foundation seed in one stage instead of previously practiced two stages (foundation stage 1 and foundation stage 2). Therefore, BRRI will need to produce more quantity of breeder seed in every year.

Knowledge Management: Report/Proceedings