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The genetic architecture of maize flowering time

AutorBuckler, Edward S.; Holland, James B.; Bradbury, Peter J.; Acharya, Charlotte B.; Brown, Patrick J.; Browne, Chris; Ersoz, Elhan; Flint-García, Sherry; García, Arturo; Glaubitz, Jeffrey C.; Goodman, Major M.; Harjes, Carlos; Guill, Kate; Kroon, Dallas E.; Larsson, Sara; Lepak, Nicholas K.; Huihui, Li; Mitchell, Sharon E.; Pressoir, Gael; Peiffer, Jason A.; Oropeza Rosas, Marco; Rocheford, Torbert R.; Romay Álvarez, María Cinta ; Romero, Susan; Salvo, Stella; Sánchez Villeda, Héctor; Silva, Sofia da; Qi, Sun; Feng, Tian; Upadyayula, Narasimham; Ware, Doreen; Yates, Heather; Jianming, Yu; Zhiwu, Zhang; Kresovich, Stephen; McMullen, M. D.
Fecha de publicación7-ago-2009
EditorAmerican Association for the Advancement of Science
CitaciónScience 325 (5941): 714-718 (2009)
ResumenFlowering time is a complex trait that controls adaptation of plants to their local environment in the outcrossing species Zea mays (maize). We dissected variation for flowering time with a set of 5000 recombinant inbred lines (maize Nested Association Mapping population, NAM). Nearly a million plants were assayed in eight environments but showed no evidence for any single large-effect quantitative trait loci (QTLs). Instead, we identified evidence for numerous small-effect QTLs shared among families; however, allelic effects differ across founder lines. We identified no individual QTLs at which allelic effects are determined by geographic origin or large effects for epistasis or environmental interactions. Thus, a simple additive model accurately predicts flowering time for maize, in contrast to the genetic architecture observed in the selfing plant species rice and Arabidopsis.
Descripción5 pages, 5 figures.-- Supporting information (Materials and Methods, Suppl. figs S1-S75, tabs S1-S5, refs., 88 page PDF file) available at: http://www.sciencemag.org/cgi/content/full/sci;325/5941/714/DC1
Versión del editorhttp://dx.doi.org/10.1126/science.1174276
URIhttp://hdl.handle.net/10261/15832
DOI10.1126/science.1174276
ISSN0036-8075 (Print)
1095-9203 (Online)
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