Tree improvement research for agroforestry: a note of caution

Tree improvement is increasingly considered as an important research direction for the development of more productive agroforestry systems. In these systems trees have multiple economic uses and ecological functions that should be taken into account in tree improvement programmes in order for these programmes to ensure that the improved species, the end-result of their research, is adapted to agroforestry. The key issue here may be for tree improvement specialists involved in agroforestry programmes to be able to differentiate, from the range of characters that could be selected for improvement of a given species, characters that are absolutely necessary to improve whatever agroecosystem the tree may be grown in – the primary targets and characters for which improvement would only be appropriate for particular agro ecosystems – the secondary targets.

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