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

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UNIVERSITY OF AGRICULTURAL SCIENCES, RAICHUR
FINAL EXTERNAL EXAMINATION (II SEMESTER: 2015-16)
GPB - 201 (2+1): Principles of Plant Breeding

Date: 02.05.2016
Time: 2 Hours
Max. marks: 50

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

1. _________ is regarded as directed evolution or designer’s activity.
   a. Genetics  b. Trait breeding  c. Plant breeding  d. None of these

2. The progeny test in Sugar beet (Beta vulgaris) was developed by
   a. Lewis  b. N I Vavilov  c. Vilmorin  d. Harlan and Pope

3. The observable variability present in a character in a population is called as
   a. Genotypic  b. Phenotypic  c. Additive  d. Non-additive

4. Which of the following is a highly uniform generation
   a. F₆ generation  b. BC₁ generation  c. F₂ generation  d. F₁ generation

5. The main patterns concerning origin and domestication of cultivated plant species are:
   a. Mendelian variation  b. Polyploidy  c. Inter-specific hybridization  d. All of these

6. The gene and genotypic frequencies of mendelian population is remain same was proposed by
   a. Harlan and Pope  b. Hardy and Weinberg  c. Bateson  d. Jenson

7. _________ was known as father of mutation breeding
   a. Gustasson  b. Mendal  c. Nilson Ehle  d. T H Morgan

8. A mating among the following can lead to high heterosis
   a. AABBCCDD x aabbCCDD  b. aaBbCCDD x AABBCCDD
   c. AABbCCdd x AABbCCdd  d. aaBBccdd x aabbCCDD

9. Which of the following is a non-particulate ionizing radiation?
   a. Gamma (γ) rays  b. Ultra Violate (UV) rays  c. Alpha (α) rays  d. Beta (β) rays

10. Genetic composition of Clone is
    a. Homogenous and Heterozygous  c. Homogenous and Homozygous
    b. Heterogenous and Heterozygous  d. Heterogenous and Homozygous

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I B. FILL IN THE BLANKS
(10x0.5=5)

11. Ability of plant to reject its own pollen is called __________.

12. Differential rate of reproduction of an organism is called __________.

13. CMS system becomes CGMS on the identification of __________ genes.

14. CMS system overcomes hand emasculation during hybrid seed production.

15. Fairchild mule is a cross between Dianthus barbatus x __________.

16. The mechanism for converting cross pollination in maize __________.

17. In 3 line systems of producing hybrids the male fertile non restoring line is called __________.

18. The primitive cultivars, which were selected and cultivated by farmers for many generations are called __________.

19. The gene pool in which intermatting is easy & leads to production of fertile hybrids is __________.

20. The Toxic compound present in Brassica species is __________.

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II. DEFINE THE FOLLOWING
(10×1=10)

21. Introduction

22. LD₅₀ value

23. Synthetic varieties

24. Ideotype

25. Plant breeders’ right

26. Antibiosis

27. Genetic erosion

28. Inbred line

29. Multilines

30. Gene pool

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III. ANSWER ANY FIVE OF THE FOLLOWING
(5×2=10)

31. Write the application of allopolyploids in crop improvement.

32. Centre of origin

33. System of mating

34. Characteristics of abiotic stresses

35. Genetics of disease resistance

36. Spontaneous and induced mutation

37. Apomixis and its classification

38. Activities of plant breeding

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IV. ANSWER ANY FOUR OF THE FOLLOWING
(4×2.5=10)

39. Classify the self incompatibility with examples.

40. Define Hardy-Weinberg law and explain the factor affecting law in one or two sentences.

41. Differentiate different types of male sterility with examples.

42. Write the different mechanisms to promote cross pollination.

43. Explain the different types of exsitu conservations.

44. Differentiate Pure line, Clone and Inbred.

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V. ANSWER THE FOLLOWING
(3+3+4=10)

45. Define and classify recurrent selection. Explain any one.

46. Schematically explain the transfer of a dominant gene controlling disease resistant through back cross method.
    OR

47. What is drought? List different mechanisms of plant to overcome drought.

48. Define and write characteristics of mutation and also write the procedure for mutation breeding.

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