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Citation:

Study on Stable Carbon Isotopic Composition of Populus nigra L.Gene Resource

  • Received Date: 2005-04-18
  • Foliar δ13C values as the indicating value of water use efficiency(WUE) were measured in 134 clones of Populus nigra L.introduced from different areas of Europe.We investigated the characteristics of δ13C value and water use efficiency of gene resources.The foliar δ13C value of P.nigra L.was abundant in diversity,ranging from-30.40‰ to-27.02‰.The difference of δ13C value in gene resources from different areas was significant,The clones introduced from Russia,Turkey and Germany had higher δ13C value and could be used as parents for breeding new variety.The δ13C value of same clones planted in different areas of China was affected by environment greatly,δ13C value of P.nigra L.clones planted in Inner Mongolia was-26.53‰,which was higher than those planted in Beijing and Shaanxi.The correlation between δ13C value and growth was different when P.nigra L.were planted in different areas.The correlation coefficients between δ13C and plant height,between δ13C and ground diameter of clones in Beijing were 0.912 and 0.829 respectively,whereas between δ13C value and growth of clones in Inner Mongolia and Shaanxi showed no significant correlation.Therefore,it is necessary to compare the δ13C value of different genotype in the same growth condition and analyze the correlation between δ13C value and growth status for future scanning and breeding the new variety with high WUE and high productivity.
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Study on Stable Carbon Isotopic Composition of Populus nigra L.Gene Resource

  • 1. Research Institute of Forestry, CAF
  • 2.  Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China

Abstract: Foliar δ13C values as the indicating value of water use efficiency(WUE) were measured in 134 clones of Populus nigra L.introduced from different areas of Europe.We investigated the characteristics of δ13C value and water use efficiency of gene resources.The foliar δ13C value of P.nigra L.was abundant in diversity,ranging from-30.40‰ to-27.02‰.The difference of δ13C value in gene resources from different areas was significant,The clones introduced from Russia,Turkey and Germany had higher δ13C value and could be used as parents for breeding new variety.The δ13C value of same clones planted in different areas of China was affected by environment greatly,δ13C value of P.nigra L.clones planted in Inner Mongolia was-26.53‰,which was higher than those planted in Beijing and Shaanxi.The correlation between δ13C value and growth was different when P.nigra L.were planted in different areas.The correlation coefficients between δ13C and plant height,between δ13C and ground diameter of clones in Beijing were 0.912 and 0.829 respectively,whereas between δ13C value and growth of clones in Inner Mongolia and Shaanxi showed no significant correlation.Therefore,it is necessary to compare the δ13C value of different genotype in the same growth condition and analyze the correlation between δ13C value and growth status for future scanning and breeding the new variety with high WUE and high productivity.

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