Q.48 The term ‘desirable trait’ can mean different things for different plants. Justify the
statement with suitable examples.
to incorporate these into crop plants. The list may be as follows
(i) Increased tolerance to environmental stress (salinity, extreme temperature, drough!)
e.g., hybrid maize, jowar and bajra which are resistant to water stess.
(ii) Resistance to pathogens (viruses, fungi and bacteria) e.g., moong bean (resistance to
yellow mosaic virus and powdery mildew).
(iii) Increased tolerance to insect pests. e.g., a new variety of Brassica (rapeseed mustard)
is resistant to aphids.
(iv) High-yielding and improved quality of crop plant. e.g., Atlas 66 used as a donor for
developing wheat varieties with improved protein content.
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