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

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UNIVERSITY OF AGRICULTURAL SCIENCES, RAICHUR
FINAL EXTERNAL EXAMINATION
II Yr. B.Sc. (Hons.) Agri.
I Sem. 2018-19
Date : 10.12.2018
Time : 2 ½ Hrs.
Max. Marks : 50
GPB 201(2+1)
Fundamentals of Plant Breeding

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

1. Multiline varieties were developed for the first time by
   a. Van Der Plank b. N. Borlaug c. Jensen d. Brilifen

2. ________ Mutations are useful in the crop improvement program to the Plant Breeder
   a. Vital b. Sub lethal c. lethal d. None

3. An individual carrying 2n-2 chromosome complement is called
   a. Monosomic b. Trisomic c. Nullisomic d. Disomic

4. _______ is the example of often cross pollinated crop.
   a. Sunflower b. Rice c. Bajra d. Cotton

5. In Pigeonpea ________ type of male sterility is used to develop commercial hybrid.
   a. CMS b. GMS c. CGMS d. PGMS

6. ________ component of variance is easy to fix
   a. Additive b. Dominance c. epistasis d. Environment

7. When single cross hybrid is crossed with an open pollinated variety, it is termed as
   a. Test cross b. Back cross c. Top cross d. Double top cross with composite varity

8. Homozygosity increases upon
   a. Selfing b. Crossing c. Sibmating d. Random mating

9. _________ male sterility is used for the improvement of fodder crops, leafy vegetables where seed is not of economic importance.
   a. CMS b. GMS c. CGMS d. PGMS

10. Maximum hybrid vigour is observed in ________ generation.
    a. F1 b. F2 c. F0 d. F3

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

	A	B
11.	Detassling	a. Vilmorin
12.	Camerarius	b. Maize
13.	D. S. Athwal	c. Wheat
14.	Norin-10	d. Sexuality in plants
15.	Progeny test	e. Bajra – Breeder

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I C. STATE WHETHER THE STATEMENTS ARE TRUE OR FALSE (5x0.5=2.5)

16. Environmental variation is heritable.
    f

17. Banana is an example of allotriploid.
    t

18. Grain yield in most of the crops is governed by minor genes.
    f

19. Composite varieties produced both in self pollinated and cross pollinated crops.
    f

20. Qualitative characters show distinct classes and follow ratios.
    t

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II. DEFINE THE FOLLOWING (10x1.0=10.0)

21. Cleistogamy.

22. Multilines.

23. Participatory plant breeding.

24. Hardy Weinberg law.

25. Law of Homologous Series.

26. Pureline.

27. Pedigree method.

28. Apomixis.

29. Composites.

30. Domestication.

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III. ANSWER / DIFFERENTIATE ANY FIVE OF THE FOLLOWING (5x2.0=10.0)

31. Primary and Secondary centres of origin.

32. Heterosis and inbreeding depression.

33. Pureline selection and Mass selection.

34. Sporophytic and Gametophytic incompatibility.

35. Primary and Secondary introductions.

36. Pedigree and Bulk method.

37. Autogamy and Allogamy.

38. Qualitative and Quantitative traits.

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IV. ANSWER ANY FOUR OF THE FOLLOWING QUESTIONS (4x2.5=10.0)

39. Explain the multiple factor hypothesis of polygenic inheritance.

40. Write in brief the different mechanisms promoting auto and allogamy in crops.

41. Write the important steps involved in Breeding for disease resistance.

42. Describe in brief, the applications of mutation breeding.

43. What are the important achievements in plant breeding?

44. Write a brief note on the classification of polyploidy

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V. ANSWER 45th, 46th AND ANY ONE OF 47th OR 48th QUESTION (3+3+4=10.0)

45. Define pureline selection. Explain the procedure of pureline selection.

46. What is apomixis? Give different types of apomixis with examples.

47. Define the term Genetic Erosion. Write in brief about Ex-situ method of conservation of germplasm.

OR

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

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