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Citation:

Cross Breeding in Eucalyptus

  • Received Date: 1995-01-24
  • Two hundred and four hybrids have been produced with controlled pollination method since 1989, of which the mother tree is Eucalyptus urophylla and the fathers are E. tereticornis, E. camaldulensis, E. exserta, E. saligna, E. grandis, E. leizhou No. 1, E. grandis ×E. urophylla and E. pellita. The phenological regimes of flowering of the parents have been summarized. The pollens stored under -18~-22℃ for 42 months after drying treatment could be kept with a germination ratio above 60%. Even trials involving 72 hybrids have been established. The results indicate that most of the hybrids have marked heterosis in volume accumulation when 3 years old. The best hybrids are tested to be E. urophylla× E. tereticornis and E. urophylla ×E. camaldulensis, with individual volume higher than that of the parents by 120.73% and 89.40% respectively.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Cross Breeding in Eucalyptus

  • 1. The Research Institute of Tropical Forestry, CAF Guangzhou 510520

Abstract: Two hundred and four hybrids have been produced with controlled pollination method since 1989, of which the mother tree is Eucalyptus urophylla and the fathers are E. tereticornis, E. camaldulensis, E. exserta, E. saligna, E. grandis, E. leizhou No. 1, E. grandis ×E. urophylla and E. pellita. The phenological regimes of flowering of the parents have been summarized. The pollens stored under -18~-22℃ for 42 months after drying treatment could be kept with a germination ratio above 60%. Even trials involving 72 hybrids have been established. The results indicate that most of the hybrids have marked heterosis in volume accumulation when 3 years old. The best hybrids are tested to be E. urophylla× E. tereticornis and E. urophylla ×E. camaldulensis, with individual volume higher than that of the parents by 120.73% and 89.40% respectively.

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