<abstract xmlns="http://www.w3.org/1999/xhtml"><p> Data from three seed orchards (Chongyang, Zhangle and Laoshan) and Lintian forest were used to study pollination characteristics, pollination level, pollen and ovule production in Chinese fir. The results show that male and female cones have their own distribution patterns within crowns. Male cones are located in the middle to top and female cones the middle to bottom part of the crown. Because of lower density of trees in seed orchard than that in a stand, female cones are distributed over the entire crown in seed orchard trees. Chinese fir male and female cones appear to be very well adapted for wind as the pollination mechanism. There is no difference in the number of pollen grains produced by one pollen sac among trees in the same clone, but there are differences between clones. There are differences between both clones and years in female cone number, male cone number and their ratio. The pollen accumulation rate during pollination should be 3 to 5 pollen grains/mm2 to ensure fertilization. The Chinese fir seed orchards in this study produced too much pollen and could be improved by stimulation of more female flowers in order to produce more seeds.</p></abstract>

Data from three seed orchards (Chongyang, Zhangle and Laoshan) and Lintian forest were used to study pollination characteristics, pollination level, pollen and ovule production in Chinese fir. The results show that male and female cones have their own distribution patterns within crowns. Male cones are located in the middle to top and female cones the middle to bottom part of the crown. Because of lower density of trees in seed orchard than that in a stand, female cones are distributed over the entire crown in seed orchard trees. Chinese fir male and female cones appear to be very well adapted for wind as the pollination mechanism. There is no difference in the number of pollen grains produced by one pollen sac among trees in the same clone, but there are differences between clones. There are differences between both clones and years in female cone number, male cone number and their ratio. The pollen accumulation rate during pollination should be 3 to 5 pollen grains/mm2 to ensure fertilization. The Chinese fir seed orchards in this study produced too much pollen and could be improved by stimulation of more female flowers in order to produce more seeds.

Studies on the Pollination Characteristics and Pollination Level of Chinese fir Seed Orchard

Silvae Genetica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Data from three seed orchards (Chongyang, Zhangle and Laoshan) and Lintian forest were used to study pollination characteristics, pollination level, pollen and...

Studies on the Pollination Characteristics and Pollination Level of Chinese fir Seed Orchard

Published Online: Oct 27, 2017

Page range: 7 - 11

Received: Apr 24, 2003

DOI: https://doi.org/10.1515/sg-2004-0002

Keywords
Cunninghamia lanceolata (Lamb.) Hook, Chinese fir, seed orchard, clones, pollen, ovules

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Studies on the Pollination Characteristics and Pollination Level of Chinese fir Seed Orchard

Published Online: Oct 27, 2017

Page range: 7 - 11

Received: Apr 24, 2003

DOI: https://doi.org/10.1515/sg-2004-0002

KeywordsCunninghamia lanceolata (Lamb.) Hook, Chinese fir, seed orchard, clones, pollen, ovules

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Cunninghamia lanceolata (Lamb.) Hook, Chinese fir, seed orchard, clones, pollen, ovules