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

UNIVERSITY OF AGRICULTURAL SCIENCES, RAICHUR
FINAL EXTERNAL EXAMINATION
II Yr. B.Sc. (Hons.) Agri.
I Sem. 2019-20
GPB 201 (2+1)
Fundamentals of Plant Breeding
Date: 11.12.2019
Time: 2 ½ Hrs.
Max. Marks : 50

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

1. Average performance of inbred line in number of cross combination is called as
   a. SCA    b. GCA    c. RSSGCA    d. RSSCA

2. Transgressive segregates can be obtained through
   a. Pure line Selection  b. Pedigree Selection  c. Mass Selection  d. Clonal Selection

3. Highest uniformity present in
   a. Double cross hybrid  b. Single cross hybrid
   c. Three way cross hybrid  d. Top cross hybrid

4. Development of embryo from egg cell without fertilization is called
   a. Apogamy  b. Apospory  c. Parthenogenesis  d. Adventive Embryony

5. A cross between a hybrid or a segregating generation and one of its parents is known as
   a. Back cross  b. Test cross  c. Reverse cross  d. Top cross

6. Examples of Homogeneous and Homozygous breeding population are
   a. Composite and Synthetics  b. Multiline and Mass Selected Variety
   c. Pure line and Inbred lines  d. Clone and F₁ Hybrids

7. The process of bringing wild forms under human management is known as
   a. Acclimatization  b. Domestication  c. Evolution  d. Stabilisation

8. The following is used for induction of polyploidy in crop plants
   a. Acrifidine  b. EMS  c. Colchicine  d. NAA

9. Centre of diversity/origin of maize crop is
   a. Central Asia  b. Chinese Centre  c. Central America  d. Hindustan Centre

10. Recurrent Selection (RS) scheme that involves use of two heterozygous testers
    a. RS-GCA  b. RS-SCA  c. Simple RS  d. Reciprocal RS

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

A	B
11. Recurrent Selection	a. Rapid Generation Advancement
12. Mass Selection	b. Record of Ancestry
13. Pedigree Method	c. Oldest Method
14. Bulk Method	d. Breaks Linkage
15. SSD Method	e. Evolutionary Method

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

16. Inbreeding depression is observed in self pollinated crops.

17. A and B lines are isogenic except for sterility locus in CGMS system of male sterility.

18. In backcross breeding Recipient parent will be repeatedly backcrossed with Donor parent.

19. In heterosis breeding can be utilised both in selfed and cross pollinated crops.

20. Heterozygous population will segregate upon selfing.

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

21. Mutation.

22. Hybrid.

23. Apomixis.

24. Genetic erosion.

25. Heritability.

26. Panmictic population.

27. Clone.

28. Inbred line.

29. Plant Breeding.

30. Hybrid.

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

31. Synthetics and Composites.

32. Three line and Two-line Breeding.

33. Primary Centre of Diversity and Secondary Centre of Diversity.

34. Stabilised selection and Directional selection.

35. Self Incompatibility and Male Sterility.

36. Heterosis and Inbreeding Depression.

37. Test cross and Top cross.

38. Half sib and Full sib family selection.

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

39. Explain in brief the different mechanisms promoting cross pollination.

40. Components of Genetic variance.

41. Participatory Plant Breeding.

42. Transgenic Male Sterility.

43. Pure line Selection.

44. How to identify whether the male sterility is due to GMS or CMS ?

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V. ANSWER 45th, 46th AND ANY ONE OF 47th OR 48th QUESTION (3x3+1=10.0)

45. Discuss the contribution of Allopolyploidy in crop evolution with suitable examples.

46. Explain different mating systems with their role in Plant Breeding.

47. Enlist the different Recurrent Selection schemes used in the population improvement of cross pollinated crops and explain any one RS Scheme in detail.
    OR

48. Explain the backcross breeding with case of transfer of recessive resistance gene in to adopted but susceptible variety.