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Evaluation and Selection of Poly-crossed Onion

S. N. Mozumder
Senior Scientific Officer
Regional Spices Research Center, BARI, Gazipur

M. I. Haque
Senior Scientific Officer
Regional Spices Research Center, BARI, Gazipur

R. Ara
Senior Scientific Officer
Regional Spices Research Center, BARI, Gazipur

S. Akter
Chief Scientific Officer
Regional Spices Research Center, BARI, Gazipur

Abstract/ Executive Summary:

The experiment was conducted at Regional Spices Research Center, BARI, Gazipur, during November, 2013 to April 2014 to evaluate the variability created in onion germplasm through poly-crossing method. Seven poly-cross onion genotypes were evaluated considering agronomic performances and yield parameters. A lot of variations was observed in respect to bulb size, attractiveness, color and shape of bulb compared to their mother bulb characteristics.

Keywords: Onion, Evaluatton, Poly-cross selection

Location: Spices Research Center, BARI, Shibganj, Bogra

Start Date: 00-11-2013

End Date: 00-04-2014

Program Area: Variety and Species

Commodity: Onion

Objectives:

To identify superior cross products from poly-crossing of seven germplasm
To select superior lines for further study.

Methodology:

The experiment was conducted at Regional Spices Research Center, BARI during November, 2013 to April 2014 to evaluate the variability created in onion germplasm through poly-crossing method. To produce bulb from polycross seed, 45 days old seedlings of 7 onion genotypes were planted in 5m x 1m beds on 07 January, 2014. The land was fertilized with cowdung 10 t/ha, nitrogen 120 kg, phosphorus 55 kg , potasium 80 kg and sulphur 20 kg per hectare. The entire quantity of cowdung, P, S, Zn, B, ¼ N and 1/3 K was applied at the time of final land preparation. The rest N and K was applied at 20 and 40 days after planting. Three weeding plus mulching and 5 irrigation was provided in different times as required. Antracle was applied three times at 10 days interval to control purple blotch disease. Bulbs of all population were harvested on 30 March to 8 April, 2014 from each plot separately and stored.

Source of Information: Research Report 2014. Spices Research Center, BARI, Shibganj, Bogra

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 25,000/-

Total Budget (Tk.) : 25,000/-

Achievement/Findings:

There was lots of variation in qualitative and quantitative characters in each population and also among the population. Different shape, size, colour and shininess indicated successful crossing was occurred between different lines in the last year’s crossing block. The yield were counted from the whole plot basis and converted to per hectare. Lots of deviation was found from their mother bulb in respect to shape, size and color.

Knowledge Management: Report/Proceedings