期刊
PLANT PHYSIOLOGY
卷 167, 期 4, 页码 1487-U608出版社
AMER SOC PLANT BIOLOGISTS
DOI: 10.1104/pp.114.251751
关键词
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资金
- U.S. Department of Agriculture Food Research Initiative [2011-67012-30773]
- National Science Foundation Division of Biological Infrastructure [0820624]
- Howard Hughes Medical Institute
- Gordon and Betty Moore Foundation [GBMF3405]
- NIFA [579286, 2011-67012-30773] Funding Source: Federal RePORTER
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [0820624] Funding Source: National Science Foundation
The quest to determine the genetic basis of root system architecture (RSA) has been greatly facilitated by recent developments in root phenotyping techniques. Methods that are accurate, high throughput, and control for environmental factors are especially attractive for quantitative trait locus mapping. Here, we describe the adaptation of a nondestructive in vivo gel-based root imaging platform for use in maize (Zea mays). We identify a large number of contrasting RSA traits among 25 founder lines of the maize nested association mapping population and locate 102 quantitative trait loci using the B73 (compact RSA) x Ki3 (exploratory RSA) mapping population. Our results suggest that a phenotypic tradeoff exists between small, compact RSA and large, exploratory RSA.
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