Johannes M M Engels

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Questions related from Johannes M M Engels

Why do we need multilateralism rather than bilateralism approaches in conserving and using PGRFA?

Plant genetic resources have been regarded as a 'common heritage item' for long. Only during the debates in the meetings of the FAO Commission on Plant Genetic Resources during the 1980ies that...

28 December 2017 9,222 0 View

Could difficulties to explain trait inheritance with diploidy and observed irregular chromosome pairing during meiosis be explained by tetraploidy?

During the analysis of the observations from a complete diallel cross of cacao clones at CATIE in Costa Rica it turned out to be impossible to determine for a number of traits their inheritance at...

20 November 2017 4,826 8 View

How can we make PGRFA conservation networks sustainable?

Considering the fact that crops and their traditional varieties and landraces are widely spread and in most cases do not follow national boundaries it is a given that effective and efficient...

01 January 1970 4,702 9 View

A fundamental question for ex situ conservation is how much genetic diversity is required to ensure its longtime survival?

Over the years and based on interactions with many researchers and curators around the world possible answers on the above question were discussed. Unfortunately, no concrete answers were so far...

01 January 1970 7,295 3 View