M. N. A. Chowdhury
Senior Scientific Officer
Spices Research Center,BARI, Shibganj, Bogra
R. Ara
Senior Scientific Officer
Spices Research Center,BARI, Shibganj, Bogra
B. R. Banik
Director
Spices Research Center,BARI, Shibganj, Bogra
The experiment was conducted at Spices Research Centre, Shibganj, Bogra during rabi season (2012-2013) with a view to develop summer onion lines with longer shelf life, thin neck bulb and good yield potential. F1 bulbs were used in this study. These bulbs were planted on 20 November 2012. At maturity seeds were harvested, processed and stored for F2 bulb production and selection was made from this population with a view of thin neck bulb with longer shelf life.
DEVELOPMENT, HYBRIDIZATION, ONION, SUMMER.
Spices Research Center,BARI, Shibganj, Bogra
Variety and Species
To develop summer onion lines with longer shelf life, thin neck bulb and good yield potential from F2 population
The experiment was conducted at Spices Research Centre, Shibganj, Bogra during rabi season (2012-2013). The planting materials were F1 bulbs (Crossing materials- BARI Onion-5 x BARI Onion-1 & 4, BARI Onion-3 x BARI Onion-1 & 4 and BARI Onion-2 x BARI Onion-1 &4). Bulbs were planted in 20 November 2012 for F2 seed production and the seeds were harvested on 05 May 2013. The crop was fertilized with cow dung 10 t/ha, N115, P54, K75, S20, Zn3 and B2 Kg/ha. Weeding was done at 25, 50, 75 & 100 days after planting. Irrigation was applied at 20, 40, 60, 80 & 100 days after planting. Fungicide (Ruvral @ 2.5 g/l) was sprayed at 15 days interval starting from 60 day after planting. Insecticide (Admare @ 0.5 ml/l) was sprayed at 15 days interval starting from 90 day after planting. At the time of flowering the crop were covered with mosquito net for avoiding out crossing. In the study, selfing was done by hand. The matured seeds were collected and stored for F2 bulb production.
Annual Report 2012-13, Spice Research Center, BARI, Shibganj, Bogra
After pollination, the harvested matured F2 seeds were kept in refrigerator. These seeds will be grown for F2 bulb production in the following year and selection was made from this population for getting thin neck bulb with longer shelf life. Mean performance of harvested F2 seeds of different crossing materials are given Table-1. The highest amount of seed (110g) was collected from BARI Onion-5 x BARI Onion-1crossed bulb and lowest from BARI Onion-2 x BARI Onion-4 (48g). The germination percentage of different crosses varied from 75-78%.
Report/Proceedings