Volume 11, Issue 40 (summer 2007)
jwss 2007, 11(40): 267-276 |
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M. R. Pordel, R. Ebadi, M. Mobli, B. Hatami. Effect of Pollination on Seed Quantity and Quality of Three Winter Cultivars of Canola (Brassica napus L.) in Isfahan. jwss 2007; 11 (40) :267-276
URL: http://jstnar.iut.ac.ir/article-1-703-en.html
URL: http://jstnar.iut.ac.ir/article-1-703-en.html
Abstract: (21551 Views)
Pollination and fertilization of canola flowers are the main factors of canola seed production. In order to study the effects of insect pollinators on seed quantity and quality of three chosen cultivars of canola, namly, S.L.M., Okapi and Talaye, a split plot experiment in a complete randomized block design with four replications was carried out in Isfahan region. Main plots consisted of canola cultivars, and subplots consisted of open pollination and non-pollination by insects. Results indicated that the time to seed ripening in pollinated plots was 10.5 days less than those of non-pollinated plots. Pollination by insects increased the number of pods per plant, number of seeds per pod and weight of 1000 seeds, by 14.3%, 23.5% and 10%, respectively. Grain yield also increased by 53% in pollinated plots. Pollination decreased seed moisture percentage by 3.15%, but its effect on seed oil percentage and germination percentage were not significant. Time to seed germination of plants of pollinated plots decreased three hours. Cultivars were significantly different in seed oil percentage and time to seed germination. Talaye cultivar produced the highest amount of oil (45.5%), while Okapi produced the lowest (40.8%). There were significant interactions between cultivars and pollination in terms of seed ripening, oil percentage and moisture of seeds, and the effects of pollination was different in different cultivars.
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