List of some agricultural crops and animals with their diploid chromosome number

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The chromosome number is among the primary foundation of hybridization in agricultural vegetation in addition to in animals. The diploid numbers of chromosomes are necessarily consistent within the same species. It is a very powerful matter of overview in fundamental plant breeding.
It is the overall rule that a hit crosses are more straightforward to achieve between particular person plants underneath the similar species slightly than between other species underneath the same genus (interspecific pass). Consequently, it is tougher to produce an intergeneric hybrid. In sum, folks which are closely similar taxonomically are much more more straightforward to pass.

However, it’s not the diploid chromosome quantity by myself that determines the ability of 2 folks to readily shape a hybrid. Main determinant is the karyotype, regarding the number, as well as the dimensions and shape of the chromosomes of an individual. Other issues are the kinds of sex chromosomes, lethal genes, and polyploidy.

Listed within the desk underneath are the diploid chromosome numbers of some agricultural crops and quite a lot of animal species. Sources of the information are provided.

ORGANISM SPECIES DIPLOID (2N)
CHROMOSOME NUMBER
SOURCE
Crops
Alfalfa Medicago sativa 32 2
Avocado Persea americana 24 4
Barley Hordeum vulgare 14 2,3
Bermudagrass Cynodon dactylon 36 2
Broad bean Vicia faba 12 3
Cashew Anacardium occidentale 42 4
Corn (maize) Zea mays 20 1,3
Cotton, American-Egyptian Gossypium barbadense 52 2
Cotton, upland Gossypium hirsutum 52 2,3
Durian Durio zibethinus 56 4
Flax Linum usitatissimum 30 2
Garden pea Pisum sativum 14 1,3
Grape Vitis vinifera 38 4
Guava Psidium guajava 22 4
Kidney bean Phaseolus vulgaris 22 3
Mango Mangifera indica 40 4
Oats, white Avena sativa 42 2
Oats, red Avena byzantina 42 2
Onion Allium cepa 16 3
Papaya Carica papaya 18 4
Peanut Arachis hypogaea 40 2
Pineapple Ananas comosus 50 4
Potato Solanum tuberosum 48 2,3
Rice Oryza sativa 24 2,3
Rye Secale cereale 14 2
Sorghum Sorghum vulgare 20 2
Soybean Glycine max 40 2
Squash Cucurbita pepo 40 3
Sugar beet Beta vulgaris 18 2
Sugar cane Saccharum officinarum 80 2
Tamarind Tamarindus indica 24 4
Tobacco Nicotiana tabacum 48 2,3
Tomato Lycopersicon esculentum 24 3
Wheat, durum Triticum durum 28 2
Wheat, common Triticum vulgare 42 2
Wheat, club Triticum compactum 42 2
Animals
Man Homo sapiens 46 1,3
Cat Felix domesticus 38 3
Cattle Bos taurus 60 3
Chicken Gallus domesticus 78 1
Dog Canis familiaris 78 3
Donkey Equus asinus 62 3
Frog Rana pipiens 26 3
Fruit fly Drosophila melanogaster 8 1,3
Grasshopper Melanoplus differentialis 24 3
Honeybee Apis mellifera 32 3
Horse Equus calibus 64 3
House fly Musca domestica 12 1,3
Mosquito Culex pipiens 6 3
Rabbit Oryctolagus cuniculus 44 3
Red ant Formica sanguinea 48 3
Rhesus monkey Macaca mulatta 42 3
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1HARTL DL, FREIFELDER D, SNYDER LA. 1988. Basic Genetics. Boston, MA: Jones and Bartlett Publishers. 505 p.

2POEHLMAN JM. 1977. Breeding Field Crops. Connecticut: AVI Publishing Co., Inc. 427 p.

3STRICKBERGER MW. 1976. Genetics. 2nd ed. New York, NY: Macmillan Publishing Co., Inc. 914 p.

4VERHEIJ EWM, CORONEL RE (eds.). 1992. Plant Resources of South-East Asia No.2: Edible Fruits and Nuts. Bogor, Indonesia: Prosea Foundation. 447 p.

(Ben G. Bareja, Dec. 4, 2013) 

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