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Download SGBAU BSc 2019 Summer 2nd Sem Seed Technology Plant Breeding Methods For Crop Improvement n Seed Production Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) BSc 2019 Summer (Bachelor of Science) 2nd Sem Seed Technology Plant Breeding Methods For Crop Improvement n Seed Production Previous Question Paper

This post was last modified on 10 February 2020

This download link is referred from the post: SGBAU BSc Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university


Time: Three Hours] [Maximum Marks : 80

Note :

  1. There are seven questions in all.
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  3. Question No. 1 is compulsory and carries 8 marks.
  4. Question Nos. 2 to 7 carry equal marks.
  5. Draw well labelled diagrams wherever necessary.
  1. (A) Fill in the blanks :
    1. When two alleles for a trait received from the parents are different the organism is said to be ________ for this trait. ½
    2. Headquarter of NBPGR is ________. ½
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    4. ________ selection has been commonly used breeding scheme applied to genetically variable and homozygous population of self pollinated crops. ½
    5. Extra chromosomes are present or missing in the cell; such condition is known as ________. ½
    (B) Choose the correct alternative (MCQ) :
    1. Individuals which contain two different chromosomes in triplicate instead of two times 2N+ 1+ 1)are called as ________. ½
      1. Double trisomics
      2. Double tetrasomic
      3. Double pentasomic
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      5. Diploids
    2. ________ originates spontaneously at a low frequency. ½
      1. Diploid
      2. Aneuploid
      3. Both
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      5. None
    3. When endospore development is ________, the condition is generally known as endosperm abortion. ½
      1. Maximum
      2. Neutral
      3. Poor
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      5. None
    4. Relative humidity affects seed ________ content because seeds are hygroscopic. ½
      1. Heat
      2. Air
      3. Soil
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      5. Moisture
  1. Which factors reduce the quality of the seed ? 1
  2. Define epistasis. 1
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  4. Which rice is a gamma ray induced semidwarf mutant variety resistance to lodging ? 1
  5. The ratio of dihybrid cross is ? 1
  1. Comment on :
    1. Gene interaction. 4
    2. Acclimatization. 4
    3. Law of segregation. 4
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    OR
    1. Quarantine. 4
    2. Plant introduction agencies in India. 4
    3. Law of independent assortment. 4
  2. Give detail account of artificial mutations and physical and chemical mutation. 12

    OR

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    Comment on :
    1. Mass selection. 6
    2. Hybridization procedure in cross pollinated crops. 6
  3. Comment on :
    1. Classification of Polyploidy 4
    2. Causes of disease resistance 4
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    4. Allopolyploidy. 4
    OR
    1. Application of breeding for disease resistance. 4
    2. Anther culture. 4
    3. Effects of aneuploids. 4
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  5. Comment on :
    1. Pollen viability. 4
    2. Genetic male sterility. 4
    3. Difference between seed and grain. 4
    OR
    1. Genetic purity of varieties. 4
    2. Factors affecting seed set. 4
    3. --- Content provided by FirstRanker.com ---

    4. Uses of self incompatibility. 4
  6. Comment on :
    1. Pollination for hybrid seed production. 6
    2. Seed village concept. 6
    OR

    Give detail account of factors affecting the choice of area of seed production (any three). 12

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  7. Comment on :
    1. Selection of land for seed production. 4
    2. Harvesting and threshing of seeds. 4
    3. Seed plot technique of potato multiplication. 4
    OR
    1. Indian seed industries. 4
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    3. Special agronomic management. 4
    4. Roughing in wheat. 4
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This download link is referred from the post: SGBAU BSc Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university