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Comparison of Pollination Efficiency on Different Pollination Methods in Yellow poplar (Liriodendron tulipifera)  

Ryu, Keun-Ok (Department of Forest Resource Development, Korea Forest Research Institute)
Kwon, Hae-Yun (Department of Forest Resource Development, Korea Forest Research Institute)
Choi, Hyung-Soon (Department of Forest Resource Development, Korea Forest Research Institute)
Kim, In-Sik (Department of Forest Resource Development, Korea Forest Research Institute)
Cho, Do-Hyun (Department of Forest Resource Development, Korea Forest Research Institute)
Publication Information
Journal of Korean Society of Forest Science / v.98, no.6, 2009 , pp. 696-702 More about this Journal
Abstract
Yellow poplar (Liriodendron tulipifera L.) is an insect-pollinated tree species with large, perfect flower, and its seed sets average only about 10 percent naturally. In its controlled pollination, pollination bags are usually taken to prevent unwanted pollination, but bagging is an expensive and time-consuming process. Therefore, this study was conducted to determine the need of pollination bag by estimating how much unintended pollination would occur when different cross methods were applied. Five different pollination methods were applied as follows: 1) natural open pollination (i.e. insect pollination) as a reference, 2) self-pollination; no removing reproductive organs with bagging, 3) open pollination; emasculated(removing sepal, petal and stamen) without bagging, 4) controlled pollination; emasculated with bagging and 5) controlled pollination; emasculated without bagging. Very low value of full seed rate (0.2%) was observed in method 3, it was suggested that removing stamen and petal restrict the activity of pollen vectors like bee. Difference in the full seed rate between method 4 and method 5 was not significant (27.9% versus 24.0%, respectively). Consequently, controlled pollination without bagging might be an alternative method for extensive breeding and mass production of seeds in yellow poplar.
Keywords
pollination; bagging; pollen contamination; seed quality; yellow poplar;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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