GPB 201(2+1) Fundamentals of Plant Breeding ( Question Paper)

 UNIVERSITY OF AGRICULTURAL SCIENCES, RAICHUR

SUPPLEMENTARY EXAMINATION
II Yr. B.Sc. (Hons.)Agri.
III Sem. 2018-19
Fundamentals of Plant Breeding
Date : 20.05.2019
Time : 2 ½ Hrs.
Max. Marks : 50

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I A. CHOOSE THE APPROPRIATE ANSWER (10x0.5=5.0)

1. In any varietal release __________ is essential.
   a. Farm trial   b. Front line demonstration   c. Breeder’s biodata
   d. All the above

2. Double cross hybrid is a cross between
   a. two inbred lines   b. Two single crosses   c. two pure lines   d. All the above

3. Progeny test is the component of
   a. Mass selection   b. Pure line selection   c. Ear to row method   d. Both b & c

4. In monosomic 2n = ______
   a. 2x – 1     b. 2x + 1     c. 2x – 2     d. 2x + 2

5. Karpechenko developed
   a. Triticale   b. Mule   c. Brassica juncea   d. Raphano brassica

6. _________ is the process of formation of embryo and endosperm.
   a. Fertilisation   b. Double fertilisation   c. Triple fusion   d. Pollination

7. Haploids can be obtained by
   a. Embryo rescue   b. Anther culture   c. Meristem culture   d. Somatic hybridisation

8. Source of variation in self pollinated crops is
   a. Mutation   b. Natural outcrossing   c. Mechanical mixture   d. All the above

9. Self incompatability is predominant in __________ species.
   a. Nicotiana   b. Parthenium   c. Maize   d. Primula

10. Male sterility can be transferred through __________ breeding method.
    a. SSD   b. Bulk   c. Pedigree   d. Backcross

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I B. MATCH THE FOLLOWING (5x0.5=2.5)

A	B
11. Potato	e. Survival of fittest
12. Flor	f. Genetically identical
13. Charles Darwin	c. 2n+1
14. Clone	d. Autotetraploid
15. Trisomic	e. Gene for gene concept

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I C. FILL IN THE BLANKS WITH APPROPRIATE ANSWERS (5x0.5=2.5)

16. Apomixis can used for the fixation of __________

17. A sudden heritable change in the characteristic of an organism is known as __________

18. __________ is most effective & widely used for chromosome doubling.

19. LD₅₀ dose is a dose of mutagen which kills the 50 % of the treated individual.

20. Mustard is an example of __________ polyploidy.

colchicine  recessive mutant  mutation  polyploidy  brassica juncea

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II. DEFINE THE FOLLOWING (10x1.0=10.0)
21. Multilines.
22. Genetic male sterility.
23. Embryo culture.
24. Hardy Weinberg law.
25. Single seed descent method.
26. Self incompatibility.
27. Nobilisation.
28. Centre’s of diversity.
29. Apomixis.
30. Back cross method.

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III. ANSWER / DIFFERENTIATE ANY FIVE OF THE FOLLOWING (5x2.0=10.0)
31. Euploids and Aneuploids.
32. Primary gene pool and Secondary genepool.
33. Pedigree and Bulk method.
34. Sporophytic and Gametophytic incompatibility.
35. Autogamy and Allogamy.
36. Pureline selection and Mass selection.
37. Heterosis and inbreeding depression.
38. Primary and Secondary centres of origin.

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IV. ANSWER ANY FOUR OF THE FOLLOWING QUESTIONS (4x2.5=10.0)
39. List the mechanisms promoting for self and cross pollinated crops.
40. Describe in brief, the applications of mutation breeding.
41. What are the important achievements in plant breeding?
42. Describe role of autopolyploids in evolutions with examples.
43. Explain the multiple factor hypothesis of polygenic inheritance.
44. Explain in detail the differences between qualitative and quantitative traits.

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V. ANSWER 45th, 46th AND ANY ONE OF 47th OR 48th QUESTION (3+3+4=10.0)
45. What are induced mutations? Explain their effects on plants?
46. Write the important steps involved in Breeding for disease resistance.
47. Define participatory plant breeding and explain its advantage and disadvantage.

48. What is recurrent selection? Give its type and write in brief the reciprocal recurrent selection.