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ae, , , , wewere —— |, 1. The use of synthetic varieties was first suggested by:, (a) Lonnquist (b) Mc Gill, (c) Hyes & Garber (d) Jenkins., 2. Hayes and Garber first suggested use of synthetics in:, fa) 1910 (b) 1919, (c) 1927 (d) 1932., 3. Synthetic varieties were first used in :, (a) Pearlmillet (b) Alfalfa, (c) Maize (d) Sunflower., 4. Now synthetics are used in:, (a) Maize a (b) Pearlmillet, (c) Alfalfa (d) All of these., 5. Asynthetic variety can be developed from :, (a) Inbreds (b) Clones, (c) Open pollinated varieties (d) All of these., 6. How many inbreds are generally used to constitute as synthetic, variety ?, (a) 2-3 (b) 3-4, (c) 5-8 (d) 10-15., 7. Synthetic vairety is a mixture of several :, (a) Purelines (b) Inbred lines, (c) Open pollinated varieties (d) None of these., 8. Initially, a synthetic variety consists of several :, {a) Heterozygotes (b) Homozygotes, {c) Purelines (da) Inbred lines., 9. In later generations, a synthetic consists of several :, (a) Homo and heterozygotes (b) Homozygotes, (c} Heterozygotes (d) Multilines., 10. A synthetic variety requires reconstitution after :, {a),Three years (b) Five years, (c) Seven years (d) Ten years., 11. The yield of a synthetic variety is always higher than:, {a) Open pollinated variety (b) Single cross hybrid, (c) Three way cross hybrid (a) Double cross hybrid., 12, The yield of a synthetic variety is always lower than : :, {a) Single cross hybrid (b) Three way cross hybrid, (c) Double cross hybrid (d) All of these., 13. Synthetic varieties are :, , (a) Polymorphic (b) Stable, (c) Heterogeneous (d) Ali of these.
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14., , 15., , 16., , 17., , 18., , 19., , 20., , 21., , 22., , 23., , 24,, , 25., , 26,, , Synthetic varieties have :, , : —— aan (b) Wide adaptation, , (d) All of these., , In advanced generations, the yield level of a synthetic variety can be, maintained by : / :, , {a) Pureline selection ., , (c) Progeny selection, , Synthetics exploit more of :, , {a) Additive gene action, , (c) Epistatic gene action, , In synthetic varieties, heterosis is ; ., (a) Not exploited (b) Partially exploited, (c) Fully exploited (d) Over exploited., , A synthetic varitey is maintained by :, {a) Selfing, , (c) Open pollimation, , (b) Mass selection, (d) None of these., , (b) Dominance gene action, (d) Non-additivi gene action., , (b) Intermating, (d) Mass selection., , The constituent genotypes of-a synthetic variety are selected on the, basis of :, {a) Phenotype (b) GCA, , (c) SCA (d) Progeny test., , 7 synthetic variety can be reconstituted which has been developed, mi : ., (a) Short term inbreds (b) Inbreds, (c) Open pollinated varieties (d) All of these., The procedure of developing synthetics was outlined by :, (a) Hayes (b) Garber, fe) Jenkins (d) Mc Gill., Jenkins outlined the procedure of developing synthetics in ;, (a) 1919 {b) 1932, (c) 1940 (d) 1944., The first generation of a synthetic varicty as designated as :, (a) Syn 1 (b) Syn 2, (c) Syn 3 (d) Syn 4. ‘, Which of the following is used for developing composites ?, ) i b) Purelines, {a) Inbred lines (, (c) Heterozygous populations (d) All of these., Composite varieties are :, (a) Hcinicapenotes (b) Heterozygous, (c) Polymorphic {d) All of these., Composite varieties have : : ;, (a) Broad genetic base (b) Wide adaptation, , (c) Less uniformity (d) All of these.
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27., 28., 29., “80., 31., , 32., , In India, synthetic varieties have heen developed in:, , (a) Pearlmillet : (b) Sugarbeet, , (c) Cauliflower (d) All of these., Jawahar is a composite variety of :, , (a) Sorghum (b) Maize, , (c) Pearlmillet (d) Sunflower., Composte 1 is a variety of: ;, , (a) Brown musterd (b) Yellow mustard, (c) Maize (d) Peralmillet, Composit varieties consists of several :, , (a) Homozygotes - (b) Heterozygotes, , (c} Homo and heterozygotes (d) Inbredlines., , All possible crosses among n genotypes are equal to:, , {a) n{n~1) (b) n(n—1)/2, , (c) n(n+1) (d) n(n+1)/2., , Which of the following is more exploited in composites ?, (a) Additive gene action (b) Dominace gene’action,, , (c) Epistatic gene action (d) Non-additive gene action.
