GPB 503 PRINCIPLES OF PLANT BREEDING (2+1)

 

UNIVERSITY OF AGRICULTURAL SCIENCES, RAICHUR
College of Agriculture, Raichur
Department of Genetics and Plant Breeding
MIDTERM EXAMINATION (I Semester – 2016-17)
COURSE: GPB 503 – PRINCIPLES OF PLANT BREEDING (2+1)
Duration: 150 min
Total marks: 40

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Q1. Discuss the features of cross-pollinated crops, the genetic basis of cross-pollinated crop species, merits, and demerits of these group of crop species? (5.0 M)

Q2. Explain in detail the Pedigree method of plant breeding, as to who gave the concept, its genetic basis, flow chart of the breeding method, merits and demerits of the method? (5.0 M)

Q3. Explain the different types of genotype and environment interaction? Also calculate the possible number of GXE interactions with four genotypes and two environments? (4.0 M)

Q4. Define Biodiversity with respect to its origin and discuss the various levels at which Biodiversity exists? (3.0 M)

Q5. What is Pre-breeding? What is the relevance of pre-breeding in today’s context and who all are involved in such pre-breeding work? What are the important positives and negatives associated with such work? (4.0 M)

Q6. Discuss the concept of SELECTION in realizing the objectives of a plant breeding programme? Also, explain the various principles and purpose of Selection? (5.0 M)

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Q7. Write short notes on the following @ 2 M each (10.0 M)
a) Methylation
b) Yield compensation
c) Double haploid technique
d) Genetic homoeostasis

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Q8. Calculate the proportion of inferior genotypes in a population if: (1.0 M)
a) n = 6; a = 0.4 and S = 0.7
b) n = 5; a = 0.6 and S = 0.8