APPENDIX C
Number of Publications in 2000–01 of 50 Most Cultivated Species
The 50 most-cultivated species were found by searching FAO’s FAOSTAT agricultural database of primary crops by area harvested. The number of publications was obtained by searching ISI’s Web of Science, a data base of 5,700 journals, for keywords (species or genus names) in titles of articles. Number of research groups was estimated by eliminating research groups bearing the same institutional address and at least one common author (to avoid double counting). Model species are provided as references. Frequently cited papers are defined as being among the top 5 most-commonly cited papers in 2000 and 2001.
Rank |
Most Cultivated Crops Common Name |
Area Cultivated (ha) |
Key Word Searched |
Average number of publications 2000/01 |
Average number of research groups 2000/01 |
Average times that a frequently cited paper is cited 2000/01 |
1 |
Wheat |
213,816,865 |
Triticum durum |
11 |
10 |
2 |
|
Wheat |
213,816,865 |
Triticum aestivum |
88 |
78 |
8 |
2 |
Rice, Paddy |
151,541,091 |
Oryza sativa |
113 |
90 |
9 |
|
Rice, Paddy |
151,541,091 |
Oryza |
124 |
101 |
10 |
3 |
Maize |
137,596,759 |
Zea mays |
88 |
81 |
7 |
4 |
Soybeans |
75,539,904 |
Glycine max |
54 |
46 |
3 |
5 |
Barley |
54,268,528 |
Hordeum vulgare |
42 |
40 |
6 |
Rank |
Most Cultivated Crops Common Name |
Area Cultivated (ha) |
Key Word Searched |
Average number of publications 2000/01 |
Average number of research groups 2000/01 |
Average times that a frequently cited paper is cited 2000/01 |
6 |
Sorghum |
42,634,739 |
Sorghum bicolor |
24 |
22 |
4 |
7 |
Millet |
37,401,852 |
Pennisetum |
19 |
17 |
1 |
|
Millet |
37,401,852 |
Echinochloa |
9 |
8 |
1 |
|
Millet |
37,401,852 |
Panicum |
8.5 |
7 |
2 |
|
Millet |
37,401,852 |
Setaria |
8 |
6 |
1 |
|
Millet |
37,401,852 |
Paspalum |
16 |
14 |
2 |
8 |
Seed Cotton |
33,978,922 |
Gossypium |
30 |
28 |
3 |
9 |
Groundnuts in Shell |
25,538,439 |
Arachis hypogaea |
28 |
27 |
3 |
10 |
Rapeseed |
23,961,310 |
Brassica campestris |
11 |
9 |
9 |
|
Rapeseed |
23,961,310 |
Brassica napus |
76 |
70 |
7 |
|
Rapeseed |
23,961,310 |
Brassica rapa |
21 |
19 |
4 |
11 |
Beans, Dry |
23,240,843 |
Phaseolus vulgaris |
73 |
67 |
5 |
|
Beans, Dry |
23,240,843 |
Phaseolus |
89 |
82 |
5 |
12 |
Potatoes |
19,301,006 |
Solanum tuberosum |
47 |
44 |
4 |
13 |
Sugar Cane |
19,245,069 |
Saccharum officinarum |
9 |
9 |
0 |
14 |
Sunflower Seed |
18,397,973 |
Helianthus annuus |
33 |
31 |
3 |
15 |
Cassava |
17,019,975 |
Manihot esculenta |
19 |
14 |
3 |
16 |
Alfalfa for Forage+Silage |
15,728,690 |
Medicago sativa |
26 |
24 |
4 |
17 |
Oats |
12,863,933 |
Avena |
26 |
24 |
3 |
18 |
Coconuts |
10,833,538 |
Cocos nucifera |
8 |
7 |
1 |
19 |
Coffee, Green |
10,766,384 |
Coffea |
21 |
16 |
3 |
20 |
Cow Peas, Dry |
9,862,865 |
Vigna |
52 |
49 |
3 |
|
Cow Peas, Dry |
9,862,865 |
Vigna unguiculata |
23 |
23 |
3 |
21 |
Oil Palm Fruit |
9,712,150 |
Elaeis guineensis |
11 |
11 |
2 |
22 |
Rye |
9,672,849 |
Secale cereale |
16 |
14 |
3 |
23 |
Sweet Potatoes |
9,391,910 |
Ipomoea batatas |
12 |
13 |
2 |
24 |
Chick-Peas |
8,582,102 |
Cicer arietinum |
25 |
23 |
2 |
25 |
Olives |
8,076,533 |
Olea europeaea |
14 |
13 |
5 |
26 |
Natural Rubber |
7,903,421 |
Hevea |
14 |
13 |
2 |
Rank |
Most Cultivated Crops Common Name |
Area Cultivated (ha) |
Key Word Searched |
Average number of publications 2000/01 |
Average number of research groups 2000/01 |
Average times that a frequently cited paper is cited 2000/01 |
27 |
Sesame Seed |
7,783,611 |
Sesamum indicum |
10 |
9 |
1 |
28 |
Grapes |
7,305,355 |
Vitis vinifera |
40 |
37 |
5 |
29 |
Citrus Fruit/Total |
7,201,853 |
Citrus |
185 |
152 |
5 |
30 |
Cocoa Beans |
7,186,666 |
Theobroma |
13 |
12 |
1 |
31 |
Peas, Dry |
6,227,031 |
Pisum sativum |
56 |
49 |
9 |
32 |
Sugar Beets |
5,979,044 |
Beta vulgaris |
25 |
23 |
6 |
33 |
Apples |
5,594,443 |
Malus |
24 |
23 |
3 |
33 |
Apples |
5,594,443 |
Malus domestica |
9 |
8 |
1 |
34 |
Plantains |
4,671,010 |
Musa |
25 |
24 |
3 |
34 |
Bananas |
4,201,809 |
Musa |
25 |
24 |
3 |
35 |
Tobacco Leaves |
4,182,338 |
Nicotiana tabacum |
40 |
36 |
4 |
36 |
Yams |
4,050,872 |
Dioscorea |
14 |
14 |
0 |
37 |
Pigeon Peas |
3,830,215 |
Cajanus cajan |
14 |
14 |
1 |
38 |
Lentils |
3,765,463 |
Lens culinaris |
10 |
10 |
2 |
39 |
Tomatoes |
3,745,229 |
Lycopersicon |
66 |
60 |
4 |
39 |
Tomatoes |
3,745,229 |
Lycopersicon esculentum |
43.5 |
41 |
4 |
40 |
Oranges |
3,598,625 |
Citrus sinensis |
8 |
7 |
1 |
41 |
Watermelons |
3,133,412 |
Citrullus |
7 |
6 |
1 |
42 |
Triticale |
3,059,216 |
Triticale |
30 |
26 |
2 |
43 |
Mangoes |
3,036,343 |
Mangifera indica |
18 |
16 |
1 |
44 |
Linseed |
3,032,743 |
Linum usitatissimum |
13 |
13 |
1 |
45 |
Buckwheat |
2,787,780 |
Fagopyrum esculentum |
5 |
5 |
1 |
46 |
Cashew Nuts |
2,767,486 |
Anacardium occidentale |
5 |
5 |
0 |
47 |
Onions, Dry |
2,738,699 |
Allium cepa |
27 |
23 |
5 |
48 |
Cabbages |
2,623,010 |
Brassica oleraceae |
36 |
31 |
7 |
49 |
Clover for Forage+Silage |
2,362,691 |
Trifolium |
37 |
34 |
5 |
50 |
Plums |
2,295,961 |
Prunus domestica |
2 |
2 |
0 |
Rank |
Most Cultivated Crops Common Name |
Area Cultivated (ha) |
Key Word Searched |
Average number of publications 2000/01 |
Average number of research groups 2000/01 |
Average times that a frequently cited paper is cited 2000/01 |
|
Other Model & Reference Species |
Arabidopsis thaliana |
277 |
235 |
31 |
|
|
Brachypodium |
2 |
2 |
1 |
||
|
Chlamydomonas |
100 |
79 |
16 |
||
|
Lotus |
24 |
21 |
7 |
||
|
Medicago trunculata |
20 |
17 |
11 |
||
|
Populus |
64 |
55 |
11 |
||
SOURCE: FAOSTAT, 2001 , http://apps.fao.org/page/collections?subset=agriculture; ISI Web of Science, 2000–2001 . |