期刊
BREEDING SCIENCE
卷 63, 期 3, 页码 317-324出版社
JAPANESE SOC BREEDING
DOI: 10.1270/jsbbs.63.317
关键词
biofortification; grain Zn and Fe; Zea mays L.; inbred lines 178 and P53; QTL analysis; meta-analysis
资金
- Hebei Province Science and Technology Support Program, China [12225510D]
- National High Technology Research and Development Program (863 Program) of China [2011AA10A103-3]
Micronutrient malnutrition, especially zinc (Zn) and iron (Fe) deficiency in diets, has aroused worldwide attention. Biofortification of food crops has been considered as a promising approach for alleviating this deficiency. Quantitative trait locus (QTL) analysis was performed to dissect the genetic mechanism of Zn and Fe content in maize grains using a total of 218 F-2:3 families derived from a cross between inbred lines 178 and P53. Meta-analysis was used to integrate genetic maps and detect Meta-QTL (MQTL) across several independent QTL researches for traits related to Zn or Fe content. Five significant QTLs and 10 MQTLs were detected. Two informative genomic regions, bins 2.07 and 2.08, showed a great importance for Zn and Fe content QTLs. The correlation between Zn and Fe level in maize grains was proposed by MQTLs as 8 of the 10 involved both traits. The results of this study suggest that QTL mapping and meta-analysis is an effective approach to understand the genetic basis of Zn and Fe accumulation in maize grains.
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