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.
Collection and preservation of all the different wild varieties, species and relatives of the cultivated species is a important for effective exploitation of natural genes available in the population. e.g., sources of resistance genes may be cultivated varieties, germplasm collections of the crop or wild relatives.
Name a man-made cereal. Trace how it was developed and where is it used?
Triticale is a man-made cereal. It was developed by crossing Triticum aestivum (common wheat) and Secale cereale (European rye).
Triticale seed grain is being used in some parts of the world as a wheat substituted.
$$ \text { Fill in the blanks. } $$
A few statements are given below followed by a set of terms in a box. Pick the correct term and write it against the appropriate statement
| (a) | Mating of closely related individuals within the same breed. | (i) | Cross |
|---|---|---|---|
| (b) | Mating of animals of same breed but having no common ancestors on either side for 4-6 generations. | (ii) | Inter-specific |
| (c) | Mating of animals of two different species. | (iii) | Outbreeding |
| (d) | Breeding of animals belonging to different breeds. | (iv) | Outcrossing |
| (v) | Inbreeding |
(a) Mating of closely related individuals within the same breed is called inbreeding.
(b) Mating of animals of same breed but having no common ancestors on either side for 4-6 generations is called outbreeding.
(c) Mating of animals of two different species is called interspecific hybridisation.
(d) Breeding of animals belonging to different breeds is called cross-breeding.
What is meant by 'hidden hunger'?
Consumption of food deficient in nutrients particularly, micronutrients, proteins and vitamins is called 'hidden hunger'.