MUnless noted below or on a specific page, all images used on the PGandP website were created in house, were purchased stock photos, or were free to use. We extend thanks to those individuals and organizations who granted permission for us to use their images on our site.


Phylogenetic circle : Iorizzo, M et al. 2013. Genetic structure and domestication of carrot (Daucus carota subsp. sativus) (Apiaceae). Botany. https://doi.org/10.3732/ajb.1300055.

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Citrus slices: Scott Bauer, USDA [public domain] https://en.wikipedia.org/wiki/Citrus#/media/File:Citrus_fruits.jpg

Grapefruit on white: Evan-Amos. [public domain] https://en.wikipedia.org/wiki/Grapefruit#/media/File:Grapefruit-Whole-&-Split.jpg

Grove:Jeff Vanuga [Public Domain] https://commons.wikimedia.org/w/index.php?curid=24766574

Flower: Miwasatoshi [CC BY-SA 4.0] https://commons.wikimedia.org/w/index.php?curid=3836802

Budsports (2 images): http://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=11991

Citrus map: used with permission from TREATT, https://www.treatt.com/news/citrus-growing-regions

Star ruby fruits and trees used with permssion from CVC, http://www.citrusvariety.ucr.edu/citrus/starruby.html

Rio star fruits and trees: used with permssion from CVC, http://www.citrusvariety.ucr.edu/citrus/riored.html

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Field of corn: Illustratedjc [CC BY-SA 3.0] https://commons.wikimedia.org/wiki/File:Ontario-Corn-field_03.jpg

Ear of corn: By Rob Bertholf [CC BY 3.0] https://commons.wikimedia.org/wiki/Category:Maize#/media/File:Corn_On_The_Cobb_From_The_Garden_(120856891).jpeg

Ear of corn on plant: Margaret Smith

Colored cobs: Sam Fentress [CC BY-SA 2.0] https://en.wikipedia.org/wiki/Maize#/media/File:Corncobs.jpg

Field of corn: Tony Webster [CC BY-SA 2.0] https://commons.wikimedia.org/wiki/File:Agriculture_-_Corn_FIeld_(45691292921).jpg

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Men in paddy: IRRI

Rice tiller: Jee & Rani Nature Photography (CC BY-SA 4.0) https://commons.wikimedia.org/wiki/File:Oryza_sativa_of_Kadavoor.jpg#/media/File:Oryza_sativa_of_Kadavoor.jpg

rice plant drawing: Franz Eugen Köhler (public domain). https://commons.wikimedia.org/wiki/File:Oryza_sativa_-_Köhler–s_Medizinal-Pflanzen-232.jpg#/media/File:Oryza_sativa_-_Köhler–s_Medizinal-Pflanzen-232.jpg

Rice varieties: IRRI. (CC BY-NC-SA 2.0) from https://www.flickr.com/photos/86712369@N00/4753966898

Graphs: Sarkar, R. & Reddy, J.N. & Sharma, S. & Ismail, Abdelbagi. (2006). Physiological basis of submergence tolerance in rice and implications for crop improvement. Current science. 91.

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Papaya fruit: Prathyush Thomas. [GNU Free Documentation License Version 1.2] from https://commons.wikimedia.org/wiki/File:Papaya_cross_section_BNC.jpg

Papaya tree diagram: Franz Eugen Köhler, Köhler's Medizinal-Pflanzen [Public domain], from https://upload.wikimedia.org/wikipedia/commons/8/84/Carica_papaya_-_K%C3%B6hler%E2%80%93s_Medizinal-Pflanzen-029.jpg

Healthy papaya: Starr, Forest and Kim, at

Tree with ringspot: Gonsalves, D., S. Tripathi, J. B. Carr, and J. Y. Suzuki, at https://www.apsnet.org/edcenter/disandpath/viral/p...

Fruit with ringspot: Gonsalves, D., S. Tripathi, J. B. Carr, and J. Y. Suzuki, at https://www.apsnet.org/edcenter/disandpath/viral/p...

Early grove: Jenkins, David A., at http://entomologylabpr.blogspot.com/2013/02/what-d...

Late grove: enkins, David A., at http://entomologylabpr.blogspot.com/2013/02/what-d...

PRSV: Gonsalves, D., S. Tripathi, J. B. Carr, and J. Y. Suzuki, at https://www.apsnet.org/edcenter/disandpath/viral/p...

Grove: jshyun [CC BY-NC-ND 2.0], from https://www.flickr.com/photos/jshyun/4620625928/in...
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Button mushrooms Böhringer Friedrich [CC BY-SA 2.5]. https://commons.wikimedia.org/wiki/File:Agaricus_bisporus_Zuchtchampignon2.jpg

Mushrooms: Darkone [CC BY-SA 2.5], from

USDA letter: https://www.aphis.usda.gov/biotechnology/downloads...