Articles
THE EFFECT OF OPEN POLLINATION AND SELECTION ON MATURITY AND YIELD OF ONION ECOTYPES OF SOUTHERN IRAN
Article number
771_17
Pages
119 – 126
Language
English
Abstract
Onion is originated in Iran and its neighboring countries.
Most of these cultivars are short day types.
In this experiment 12 cultivars which are cultivated in south region namely Raamhormozy, Bh3, Ghermez-Azarshahr, Daaman, Pary 80, Shahdad, Bardseer, Sarkareh, Primavara, Texas Yellow Grano, Texas Early Grano, and G1, were sown in Shahid Chamran University in autumn, 2002. Results of this experiment showed highly significant difference among cultivars.
After selecting desirable samples during the second stage of experiment, open pollinated seeds were collected from them in 2004. Results in the second experiment indicated no significant differences among cultivars 58 d after emergence. Primavara was judged to be the best cultivar by the time of transplanting, but Bh3 showed some superioities after transplanting. Primavara was an early maturing cultivar in both years, while the others produced bulbs early only in the second year compared to the first year.
In this stage of breeding program, bulb yield and quality, resistance to bolting, dormancy of bulb were better than the later stages, but to compete bulb quality of foreign cultivars, more researches should be conducted to select the best bulbs and controlled polycross pollinations.
Most of these cultivars are short day types.
In this experiment 12 cultivars which are cultivated in south region namely Raamhormozy, Bh3, Ghermez-Azarshahr, Daaman, Pary 80, Shahdad, Bardseer, Sarkareh, Primavara, Texas Yellow Grano, Texas Early Grano, and G1, were sown in Shahid Chamran University in autumn, 2002. Results of this experiment showed highly significant difference among cultivars.
After selecting desirable samples during the second stage of experiment, open pollinated seeds were collected from them in 2004. Results in the second experiment indicated no significant differences among cultivars 58 d after emergence. Primavara was judged to be the best cultivar by the time of transplanting, but Bh3 showed some superioities after transplanting. Primavara was an early maturing cultivar in both years, while the others produced bulbs early only in the second year compared to the first year.
In this stage of breeding program, bulb yield and quality, resistance to bolting, dormancy of bulb were better than the later stages, but to compete bulb quality of foreign cultivars, more researches should be conducted to select the best bulbs and controlled polycross pollinations.
Authors
N.A. Ansari, R. Mamghani
Keywords
onion, polycross, mature, bulbing, bolting
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