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《Journal of Beijing Forestry University》 2004-01
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Discovery of a new way of poplar triploids induced with colchicine after pollination.

Kang Xiangyang;Zhang Pingdong;Gao Peng;Zhao Fang. MOE Key Lab. for Genetics & Breeding of Forest Trees and Ornamental Plants, Beijing For. Univ., 100083, P.R.China.  
Populus alba×P. glandulosa)×P. tomentosa triploids were found from the 107 seedlings,which were obtained from 402 hybrids between P. alba×P. glandulosa etc. (male parent) and P. tomentosa(female parent) by treating the pollinated flowers with colchicine. It indicated that the effective period of inducing triploids with colchicine was 24~36 h after pollination. The highest ratio of obtained triploids reached 57 1%. The growth of triploids also showed obvious superiority over normal diploids. The average stem height and basal diameter of 2 year old triploid seedlings was 29% and 65% larger than the average growth of all the offspring respectively. The growth of BY320 is the best,of which stem height and basal diameter was 55% and 119% higher than the average growth respectively. A new way for inducing poplar triploid was obtained through the present research.
【Fund】: 国家林业局重点项目 ( 1 999 1 2 )的部分内容
【CateGory Index】: S792
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