Corn and Teosinte Pictures |
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Teosinte is photoperiod sensitive (i.e. floral initiation requires short days). |
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![](/ARSUserFiles/50701500/DiverseMaizeResearch/images/teoMO.JPG) Teosinte in Missouri (long day environment), 4 months after planting. | | ![](/ARSUserFiles/50701500/DiverseMaizeResearch/images/teoPR.jpg) Teosinte in Puerto Rico (day neutral environment), 7 weeks aftr planting. | | ![](/ARSUserFiles/50701500/DiverseMaizeResearch/images/TeoGC.jpg) Teosinte in the growth chamber (12 hr light; 12 hr dark), 6 weeks after planting. |
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The B73-teosinte F1 is very unadapted, but backcrossing quickly recovers B73 phenotypes. |
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![](/ARSUserFiles/50701500/DiverseMaizeResearch/images/B73teokernels.jpg) Seeds of B73 (left), teosinte (right) | | ![](/ARSUserFiles/50701500/DiverseMaizeResearch/images/BTF1.JPG) B73 (left), teosinte (middle), and the F1 hybrid (right). | | ![](/ARSUserFiles/50701500/DiverseMaizeResearch/images/F1ears.JPG) F1 ear of B73 x teosinte. The cob will "shatter" with minimal pressure. Note the seed "squeezing" out the top of the partially open fruitcase. |
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![](/ARSUserFiles/50701500/DiverseMaizeResearch/images/teoF1.JPG) The F1 plant is very late (photoperiod sensitive) and tillered. | | ![](/ARSUserFiles/50701500/DiverseMaizeResearch/images/teoF1earzone.JPG) The plant is highly branched. Lateral branches often end in male flowers, and there are many ears per plant. | | ![](/ARSUserFiles/50701500/DiverseMaizeResearch/images/TeosinteBC1s&inbred.jpg) A sample of BC1 ears (left) compared to B73 (right). |
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Diversity within maize inbreds: the NAM founder parents. |
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![](/ARSUserFiles/50701500/DiverseMaizeResearch/images/27DLears.jpg) Ears of the 25DL, B73, and Mo17. |
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![](/ARSUserFiles/50701500/DiverseMaizeResearch/images/27DLPlants.jpg) Plant morphological differences in the 27DL and Mo17. |
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