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Asian Journal of Plant Sciences
  Year: 2008 | Volume: 7 | Issue: 6 | Page No.: 584-588
DOI: 10.3923/ajps.2008.584.588
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Effect of Screening of Onion (Allium cepa) Ecotypes of Southern Iran on Bulb Yield and Bolting

N. Alamzadeh Ansari and R. Mamghani

For finding resistant onion cultivars against bolting can use screening, selecting and open pollination methods. In first stage 12 cultivars which are cultivated in South region namely Raamhormozy, Bh3, Azarshahar, Daaman, Pari 80, Shahdad, Bardseer, Sarkareh, Primavara, Texas Yellow Grano, Texas Early Grano, G1, were sown in Shahid Chamran University in Autumn 2002. Results this experiment shown high significants difference between cultivars. After screening and selection desirable samples during second stage of experiment open pollinated seed were collected from them in 2003, in second stage, seeds of 8 cultivar from selected plant and 2 foreign improved seeds sown in 2003-2004. Results in the second stage indicated no significant difference between cultivars 58 days after emergence. Primavara was the best cultivar by the time of transplanting, but Bh3 showed some superiority after transplanting. Primavara was the early mature cultivar in both years, while the others produced bulbs more early in the second stage compared to the first year. In second stage of breeding program, bulb yield and quality, resistance to bolting, dormancy of bulb were better than last stage, but to compete bulb quality of foreign cultivars at harvesting time, this project needs to be continue by screening and selection of the best bulbs and controlled polycross pollinations.
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How to cite this article:

N. Alamzadeh Ansari and R. Mamghani, 2008. Effect of Screening of Onion (Allium cepa) Ecotypes of Southern Iran on Bulb Yield and Bolting. Asian Journal of Plant Sciences, 7: 584-588.

DOI: 10.3923/ajps.2008.584.588






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