NDLI: Genetic variation and association mapping of silica concentration in rice hulls using a germplasm collection

Content Provider	Springer Nature Link
Author	Bryant, R. Proctor, A. Hawkridge, M. Jackson, A. Yeater, K. Counce, P. Yan, W. McClung, A. Fjellstrom, R.
Copyright Year	2012
Abstract	An association analysis on the genetic variability for silica concentration in rice hulls was performed using a “Mini-Core” set of 174 accessions representative of the germplasm diversity found in the USDA world collection of rice. Hull silica concentration was determined in replicated trials conducted in two southern states in the USA and was analyzed for its association with 164 genome-wide DNA markers. Among the accessions, the average silica concentration ranged from 120 to 251 mg g−1. Ample variation was seen within each of the five sub-populations of rice, as well as the 14 geographic regions that the accessions originated from. There was also an effect due to location and accession × location (G × E) interaction demonstrating the importance of assessing silica concentration across multiple environments. Twelve markers on ten chromosomes were significantly associated with hull silica concentration. Six markers (RM5644, RM5371, RM1335, RM283, RM263, and RM178) corroborated quantitative trait locus for silica concentration identified in other mapping studies. Our results provide germplasm and genetic markers that will assist breeding efforts to develop cultivars that have either high or low hull silica concentration. High silica hulls are good raw material for silica based industrial compounds, while low silica hulls are more biodegradable.
Starting Page	1383
Ending Page	1398
Page Count	16
File Format	PDF
ISSN	00166707
Journal	Genetica
Volume Number	139
Issue Number	11-12
e-ISSN	15736857
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-03-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Silica Association mapping Germplasm Grain quality Oryza sativa Plant Genetics & Genomics Microbial Genetics and Genomics Life Sciences Human Genetics Animal Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Medicine Animal Science and Zoology Insect Science

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