Download SGBAU BSc 2019 Summer 3rd Sem Seed Technology Hybrid Seed Production n Vegetable Seed Production Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) BSc 2019 Summer (Bachelor of Science) 3rd Sem Seed Technology Hybrid Seed Production n Vegetable Seed Production Previous Question Paper

AW?1692
B.Sc. Part-II (Scmester-III) Examination
SEED TECHNOLOGY (VOC)
(Hybrid Seed Production and Vegetable Sccd Production)
Time : 'l?hree Hours] [Maximum Marks : 80
Note :?(1) ALL questions are compulsory.
(2) Draw well labelled diagrams wherever necessary.
1. (A) Fill in the blanks :
(i) A ?ower without Pedicel is called _. L":
(ii) Ascxual reproduction in plants is called _. V2
(iii) 'l'omato is normally _ ? pollinatcd. 5".?
(iv) Pollen tube enters into the ovules through micropylc; this is known
as . L":
(B) Choose the correct alternatives (MCQ) :
(v) When pollination is brought by animals, it is called : V:
(a) Omithophilly (b) Zoophilly
(c) Chiroplcrophilly (d) None of these
(vi) __g is a root crop. 1/;
(a) Spinach (b) Carrot
(c) Cabbage (cl) None
(vii) Sccd with two cotyledons is called : V:
(a) Monocotyledon (b) Dicotyledon
(c) Both (cl) None
(viii) _ is an example of simple dry dehiscent fruit. '/2
(a) Mango (b) Custard Apple
(0) Pea (d) Coconut
(C) Answer in ONE sentence cach :
(ix) De?ne apomixes. 1
(x) What is polycmbryony ? 1
(xi) What is fertilization ? 1
(xii) What is male sterility ? 1
YBC?~ 15263 I (Contd.)

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(a)
(5)
DJ
(a)
(b)
(C)
(d')
(p)
(cl)
(0
(S)
Comment on the following :
Genetic basis 01? hcterosis.
History 3f concept of heterosiu
Biochemical basis 01? thcross in cotton.
Fixation of helerosis.
0R
Physiological basis of hetcrmk in sunflower.
Apomixis in rice.
Inbreeding depression.
Exploitation of heterosi: in orghum.
Explain :
Role of Marker genes.
Cytoplasmic. male sterility.
Seed production of restarcr line ?R?.
Disadvantages of genome male sterility.
0R
Sccd produCIion of t '.\1.\ lire \
Hybrid seed production in :un?ower.
Genetic male sterility.
Synchronisalion methods of achievement
4. Discuss the following :
(a)
(h)
(C)
(d)
(P)
((1)
(r?)
(5)
YBC~15263
Land and isolaIiOn I'eqlzirm?em.
Economics of hybrid sccd production,
Floral biology of muizc.
Importance of muinlcnuncc 91' varietal purity.
OR
Seed production planning in cotton.
Agronomic practices i1 wmhum.
Wild pollinators in surlhvwr
Field inspection SOf?hlllll.
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DJ
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DJ
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L1)
(Cunld.)

5. Comment on the following :
(a) Genetic male sterility in Brinjal. 3
(b) Female gamete formation. . 3
(c) Objectives of vegetative breeding. 3
(d) Flowering habits in spinach. 3
OR
(p) Apomixis in crop improvement.
(q) Male sterility in Tomato. 3
(r) Production of arti?cial seeds. 3
(s) Flowering habits in cucurbits. 3
6. De?ne clonal selection. Explain in detail the method of collection of clones. 1?.
0R
Describe in brief pollination methods in vegetables. 12
7. Discuss methods of seed production plantng cultural practices, breeding methods and seed
production process in Spinach and Trigorzella. ~ 12
OR
Discuss land requirement, seedling production, breeding methods and harvesting process in
Tomato. 1?.
YBC 7715263
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