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Advancing S4 to S5 Generation of Sunflower

M H Rashid
Senior Scientific Officer
Oilseed Research Centre, BARI, Gazipur

M H Khurram
Senior Scientific Officer
Oilseed Research Centre, BARI, Gazipur

Abstract/ Executive Summary:

A total of hundred one head were selected from nine sunflower genotypes as S4 generation on the basis of plant height and head diameter to advance generation from S4 to S5 generation. The range of plant height was 88-114 cm with an average plant height was 103 cm. The average head diameter was 7 cm with the range from 5 to 10 cm.

Keywords: Sunflower, Dwarf varieties, Hybrid, Higher yield

Location: Gazipur

Start Date: 00-00-2009

End Date: 00-00-2010

Program Area: Variety and Species

Commodity: Sunflower

Objectives:

1. To develop inbreed line having desirable characters

2. To develop hybrid with dwarf and higher yield

Methodology:

A total of nine sunflower genotypes were sown in plant to row progeny (single row) at Gazipur during the Rabi 2009-10. The spacing was 40cm from row to row and 25cm for plant to plant. Fertilizers were applied @ 90:35:80:30:3.6 and1.8 kg/ha of NPKSZn and B respectively from Urea, TSP, MP, Gypsum, Zinc sulphate and Boric acid. Half of the Urea and all other fertilizers were applied at the time of final land preparation. The remaining half of the Urea was applied as top dress during flower primordial stage. Other intercultural operations were done properly to obtain optimum plant growth. Before flowering, head of the selected plants was bagged with nylon net to avoid pollen contamination by bees. During anthesis pollens of the same head were rubbed gently with the brush on the stigma. At maturity heads were harvested and the seeds of individual head were dried, kept in the paper bags separately and stored in cool house.

Source of Information: Oilseed Research Report, BARI

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Selected self head were collected individually. The generation will be advanced to generate self homozygous inbreed lines. After obtain homozygous inbreeds they will be used further hybridization process.

Knowledge Management: Report/Proceedings