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प्रश्न
Answer each question in ‘One’ sentence only:
Define stock and scion.
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उत्तर
The cut stem of a plant having roots (and fixed in soil) is called stock and the cut stem of another plant (without roots) is called scion.
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संबंधित प्रश्न
Give the names of ‘two’ insect-resistant crop varieties.
In an agricultural field there is a prevalence of the following organisms and crop diseases which are affecting the crop yield badly:
- White rust
- Leaf and stripe rust
- Black rot
- Jussids
Recommend the varieties of crops the farmers should grow to get rid of the existing problem and thus improve the crop yield.
What is heterosis?
Describe briefly various steps of plant breeding methods.
Plants having similar genotypes produced by plant breeding are called
Which one of the following is not a fungal disease?
Discuss the two main limitations of plant hybridization programme.
Life style diseases are increasing alarmingly in India. We are also dealing with large scale malnutrition in the population. Is there any method by which we can address both of these problems together?
Discuss briefly the technology that made us self-sufficient in food production.
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.
