Growth traits of triploid progenies in one year old from different crosses of Betula platyphylla Suk.

LIN Lin; MU Huai-zhi; YAO Qi-chao; LIU Gui-feng; LI Hui-yu; JIANG Jing

Journal of Beijing Forestry University > 2012 > 34(5): 1-5.

LIN Lin, MU Huai-zhi, YAO Qi-chao, LIU Gui-feng, LI Hui-yu, JIANG Jing. Growth traits of triploid progenies in one year old from different crosses of Betula platyphylla Suk.[J]. Journal of Beijing Forestry University, 2012, 34(5): 1-5.

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Growth traits of triploid progenies in one year old from different crosses of Betula platyphylla Suk.

State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040, P. R.China.

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Received Date: December 31, 1899
Revised Date: December 31, 1899
Published Date: September 29, 2012

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Abstract

Triploid progenies of 20 crosses were obtained by controlledpollination using four autotetraploid Betula platyphylla (Q14, Q19, Q33 and Q34) as female and five diploid hybrid B. platyphylla ×B. pendula (M1, M2, M3, M4 and M5) as male and tested in a nursery. This paper presents early growth measurements and the results indicat that cross had a significant effect on height and base diameter growth. Variances of general combining ability and specific combining ability for both height and base diameter were significantly different from zero. Based on the results of growth, general combining ability and specific combining ability,two autotetraploids(Q19 and Q34) were identified as good female parents, two diploid hybrids (M1 and M2) as male parents, and Q34×M2 and Q34×M1 as the best crosses.
- Betula platyphylla Suk.,
- triploid,
- test cross,
- combining ability

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Growth traits of triploid progenies in one year old from different crosses of Betula platyphylla Suk.

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