Also called 'agroforestry tree'. See also representative sample multistorey cropping Multispecies crop combinations involving both annuals and perennials with an existing stand of perennials. An association of tall perennials with shorter statured crop species. An agroforestry system, such as a homegarden, that has a number of plant components of differing stature so that several layers of canopy are formed. A loose term denoting the analysis of data that are multivariate in the sense that the value of each of k variables has been measured on each individual.
Examples are canonical coordinate analysis and principal components analysis.
A mathematical method of analysing sets of data to discover which variables are statistically linked, by causative or other factors. An individual possessing a new, heritable characteristic as a result of a mutation. A sudden, heritable variation in a gene or in a chromosome structure. A sudden change in genotype. A relationship between two living beings A and B, where interaction is obligatory and favourable to both A and B, for example, as with mycorrhiza e and Rhizobium bacteria.