STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION
2016 MARCH
1.
(a)
Resistance is the ability to prevent the pathogen from causing disease.
(1)
Elucidate
the steps in breeding for disease resistance.
(2)
Cite two
examples for virus resistant plants. (Scores:
3)
OR
(b) Tissue culture is an achievement in plant breeding. What is a
somaclone? Describe the production of somatic hybrid.
2.
Many of
the flowering plants have developed some devices for discouraging in breeding.
Write any two of them. (Scores: 2)
2016 SAY
1. (a) Describe the major steps followed for the
production of new genetic variety starting from the collection of germplasm up
to elucidating the cultivars. (Score
1½)
(b) A plant
breeder has a rare variety of cultivar with him but unfortunately it has become
infected with virus. Suggest a suitable technique to produce many viable number
of progenies with a short note. (Score
1½)
MARCH 2017
1. Match the following varieties with their
respective crops:
Variety Crop
(a) Pusa Swarnim (i) Chilly
(b) Pusa Snowball (ii) Bhindi
(c) Pusa Sawani (iii) Cauliflower
(d) Pusa Sadabahar (iv) Brassica (Score: ½ X 4 = 2)
2. Breeding crops with the objective of
increased nutritional quality is called ……………………. (Score: 1)
3. Nature has mechanisms to promote
outbreeding in plants. Explain any two mechanisms existing in plants to promote
outbreeding. (Scores: 2)
MARCH 2018
1.
Select the
disease resistant variety of Bhindi produced by mutation breeding.
(a) Himgiri (b)
Prabhani Kranti
(b) Pusa Gaurav (d) Pusa Komal
2.
Controlled
breeding experiments can be carried out using artificial insemination. What are
the advantages of this process?
3.
Bio-fortification
is a practical approach to improve the public health. Name any four such crops
released by IARI.