Publication Date:
2009-08-08
Description:
Flowering 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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Buckler, Edward S -- Holland, James B -- Bradbury, Peter J -- Acharya, Charlotte B -- Brown, Patrick J -- Browne, Chris -- Ersoz, Elhan -- Flint-Garcia, Sherry -- Garcia, Arturo -- Glaubitz, Jeffrey C -- Goodman, Major M -- Harjes, Carlos -- Guill, Kate -- Kroon, Dallas E -- Larsson, Sara -- Lepak, Nicholas K -- Li, Huihui -- Mitchell, Sharon E -- Pressoir, Gael -- Peiffer, Jason A -- Rosas, Marco Oropeza -- Rocheford, Torbert R -- Romay, M Cinta -- Romero, Susan -- Salvo, Stella -- Sanchez Villeda, Hector -- da Silva, H Sofia -- Sun, Qi -- Tian, Feng -- Upadyayula, Narasimham -- Ware, Doreen -- Yates, Heather -- Yu, Jianming -- Zhang, Zhiwu -- Kresovich, Stephen -- McMullen, Michael D -- New York, N.Y. -- Science. 2009 Aug 7;325(5941):714-8. doi: 10.1126/science.1174276.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉U.S. Department of Agriculture (USDA)-Agricultural Research Service (USDA-ARS), USA. esb33@cornell.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19661422" target="_blank"〉PubMed〈/a〉
Keywords:
Alleles
;
Chromosome Mapping
;
Chromosomes, Plant/genetics
;
Epistasis, Genetic
;
Flowers/*genetics/growth & development
;
Gene Frequency
;
Genes, Plant
;
Genetic Variation
;
Geography
;
Inbreeding
;
Phenotype
;
Polymorphism, Single Nucleotide
;
*Quantitative Trait Loci
;
Quantitative Trait, Heritable
;
Recombination, Genetic
;
Time Factors
;
Zea mays/*genetics/growth & development/physiology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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