Genetic Diversity of a Maize Association Population with Restricted Phenology
Association analysis to identify genes and alleles underlying quantitative genetic variation is growing in value as the density of genotypic data increases. Association panels are often chosen to maximize molecular and phenotypic diversity, but traits measured at harvest require restricted phenology...
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Published in | Crop science Vol. 51; no. 2; pp. 704 - 715 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Madison
Crop Science Society of America
01.03.2011
American Society of Agronomy |
Subjects | |
Online Access | Get full text |
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Summary: | Association analysis to identify genes and alleles underlying quantitative genetic variation is growing in value as the density of genotypic data increases. Association panels are often chosen to maximize molecular and phenotypic diversity, but traits measured at harvest require restricted phenology to obtain data on plants that mature within a comparable interval. The objective of this study was to characterize a set of inbred lines that will mature reliably in the upper midwestern United States for the purpose of assessing traits relevant to grain and stover yield as well as stover quality. A total of 1411 lines from the North Central Regional Plant Introduction Station, our program, and contributed by collaborators were grown in observation plots. A set of 627 lines were chosen based on flowering within the desired interval, production of viable seed, agronomic suitability, uniformity, and pedigree information. Flowering time ranged from 944 to 1645 growing degree days (GDD). Genotypic data for the 627 lines was obtained using a 1536 Illumina GoldenGate assay. The panel offers deep replication of most Midwest dent alleles. There is a lesser representation of tropical alleles relative to other association panels but includes some Germplasm Enhancement of Maize (GEM)-derived lines and early flowering lines of tropical origin. The information described in this manuscript is anticipated to facilitate the use of this material for association genetic studies. |
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Bibliography: | http://dx.doi.org/10.2135/cropsci2010.03.0178 All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher. Permission for printing and for reprinting the material contained herein has been obtained by the publisher. USDOE Office of Science (SC), Biological and Environmental Research (BER) |
ISSN: | 1435-0653 0011-183X 1435-0653 |
DOI: | 10.2135/cropsci2010.03.0178 |