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प्रश्न
How the resistance in crops can be developed?
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उत्तर
- Development of morphological characters like hairy leaves in cotton and wheat develop vector resistance from jassids and cereal leaf beetle, respectively.
- Solid stem in wheat leads to resistance to stem borers.
- Biochemical characters provide resistance to insects and pests. For example, the high aspartic acid, and low nitrogen and sugar content in maize, lead to resistance against stem borers.
- The nectar-less cotton having smooth leaves develop resistance against bollworms.
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संबंधित प्रश्न
Enumerate four objectives for improving the nutritional quality of different crops for the health benefits of the human population by the process of "Biofortification".
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While studying the history of the domestication of various cultivated plants _______ were recognized earlier.
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Which one of the following combination would a sugarcane farmer look for in the sugarcane crop?
Use of certain chemicals and radiation to change the base sequences of genes of crop plants is termed ______.
In the area of plant breeding, it is important not only to preserve the seeds of the variety being cultivated, but also to preserve all its wild relatives. Explain with a suitable example.
Give a reason for the following:
The continuous inbreeding of crops may lead to reduced fertility and productivity. However, the self-pollinated crops do not show the ill-effects of inbreeding.
