Category: Genetics and Plant Breeding Tables
Scientists and their Contribution
By Agritests |
21 Jul, 2026
Leave a comment
Name of the Scientist Contribution Year Amici Described entry of pollen tubes into the ovary 1823 Anderson Metroglyph analysis 1957 Asana, R.D Ideotype of wheat for dry land agriculture – Athwal, D.S First commercial hybrid bajra in India 1965 Barrus Concept of physiological races 1911 Barbara McClintock Jumping genes 1950 Bateson Epistasis and term genetics […]
Nick names related
By Agritests |
21 Jul, 2026
Leave a comment
Sobriquets Person/entity/event Darwinism Organic evolution through natural selection Drosophila of plant kingdom Arabidopsis thaliana Evolutionary method of breeding Bulk method Fairchild’s mule Hybrid between sweet Williams and carnation Franken food GM food Fruit ripening hormone Ethylene Genetic bit Nucleotide Genetic parasite T-DNA Green revolution Quantum jump in cereal (wheat and rice) production Jumping genes Transposons […]
Technical Terms in Biometrical Genetics
By Agritests |
21 Jul, 2026
Leave a comment
Technical Term First used/coined by Year Adaptability Dobzhansky 1968 Analysis of Variance Fisher – Augmented Design Federer 1956 Biparental Cross Comstock and Robinson 1948 Biometrics Fisher 1918 Coadaptation Dobzhansky 1956 Coefficient of Variation Karl Pearson – Classical Selection Index Smith 1936 Correlation Karl Pearson 1902 Diallel Yates 1947 D² Statistics Mahalanobis 1928 Disruptive Selection Mather […]
Important crops and their scientific names
By Agritests |
21 Jul, 2026
Leave a comment
S/No. Common Name Scientific Name 2n Number n Number (a) Monocots I. Cereals 1 Bread Wheat Triticum aestivum 42 21 2 Macaroni wheat Triticum durum 28 14 3 Triticale Triticale 56 28 4 Rye Secale cereale 14 07 5 Barley Hordeum vulgare 14 07 6 Rice Oryza sativa 24 12 7 Maize Zea mays 20 […]
Mendelian Genetic Ratios
By Agritests |
21 Jul, 2026
Leave a comment
Mendelian Genetics Ratios Monohybrid phenotypic ratio 3:1 Monohybrid genotypic ratio 1:2:1 Monohybrid with partial dominance/Incomplete phenotypic ratio 1:2:1 Monohybrid with partial dominance/Incomplete genotypic ratio 1:2:1 Monohybrid with Co-dominance phenotypic ratio 1:2:1 Monohybrid with Co-dominance genotypic ratio 1:2:1 Dominant lethal genes phenotypic ratio 2:1 Dominant lethal genes genotypic ratio 2:1 Recessive lethal genes phenotypic ratio 3:0 […]
Average proportion of genes from the recurrent parent in different backcross generations
By Agritests |
21 Jul, 2026
Leave a comment
Generation Average proportion (in %) of genes from the recurrent parent F₁ 50 BC₁ 75 BC₂ 87.5 BC₃ 93.75 BC₄ 96.875 BC₅ 98.438 BC₆ 99.218 BC₇ 99.609 BC₈ 99.805 BC₉ 99.902 BC₁₀ 99.951
The Scientist Who First Used or Suggested a Breeding Method
By Agritests |
21 Jul, 2026
Leave a comment
Year Scientist Method Self-pollinated crops 1856 Louis de Vilmorin Progeny test in sugar beet 1857 Hallet Single plant selection in wheat, oats, and barley 1903 Johannsen Genetic basis of pure lines in beans (Phaseolus vulgaris L.) 1908 Nilsson-Ehle Bulk breeding method in wheat 1952 Harlan and Pope Back-cross method for small grains 1937 Harrington Mass-pedigree […]
Crops and their toxic substances present
By Agritests |
21 Jul, 2026
Leave a comment
Crop Toxic Substance Alfalfa Saponins and plantoestrogens Broad bean (Faba bean) Haemagglutinin (causes favism) Cassava CN glycosides Colocasia Crystals of calcium oxalate (acridity) Cotton seed Gossypol Cowpea Trypsin inhibitor Cucurbits Cucurbitacin Field pea Antivitamin E factor French bean Haemagglutinin, trypsin and amylase inhibitors Khesari (Lathyrus sativus) Lathyrogen or neurotoxin (β-N-oxalyl-α, β-diaminopropionic acid, BOAA) Groundnut Phenolic […]
Isolation distance of important crops
By Agritests |
21 Jul, 2026
Leave a comment
Sl. No. Name of Group (Crops) Crop Foundation (m) Certified (m) 1 Cole crops Cabbage 1600 1000 Cauliflower 1600 1000 Chinese cabbage 1600 1000 Knol-khol 1600 1000 2 Fruits / Vegetables Brinjal 200 100 Capsicum (Chillies) 400 200 Tomato 50 25 Okra 400 200 3 Bulbous Vegetables Garlic 10 5 Onion 1000 500 4 Root […]
Scientists Reputed as Fathers of Various Disciplines
By Agritests |
21 Jul, 2026
Leave a comment
Father Scientist Bacteriology Leeuwenhoek Biochemical genetics Garrod Biological control S.D. Garrett Biology Aristotle Chemistry Lavoisier Comparative anatomy G. Cuvier Embryology (plant) P. Maheshwary Epidemiology Vander Plank Ethology (study of animal behaviour) Konrad Lorentz Eugenics Francis Galton Forest pathology Robert Hartig Genetics Gregor Johann Mendel Green revolution in India M.S. Swaminathan Green revolution Norman E. Borlaug […]