See Cajanus caan Nonindustrial country

Previously called 'Third World' or 'less-developed' countries, these are the poorer countries in which up to 80% of the population are engaged in agriculture, which is mostly subsistence agriculture. They are provided with overseas aid by the rich industrial countries, and plant breeding clubs, particularly in universities, show promise of becoming the most effective form of aid in agriculture. Non-linear system

See: Linear system, and Self-organisation. Non-matching

In terms of the gene-for-gene relationship, an infection is described as non-matching when the parasitism gene(s) of the parasite do not match the resistance gene(s) of the host (i.e., the biochemical key of the parasite does not fit the biochemical lock of the host). The vertical resistance then functions and the infection is unsuccessful. See also: Matching.

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