Marker-assisted breeding in maize [Zea mays] for cold regions of Japan
2007
Enoki, H.(National Agricultural Research Center for Hokkaido Region, Sapporo (Japan))
In the cold regions of Japan, the maintenance and expansion of the genetic diversity among the breeding materials are important in the maize (Zea mays L.) hybrid breeding programs. The present study was carried out to develop marker-assisted breeding to accelerate the breeding of excellent maize varieties adapted to the cold regions of Japan. The objectives of the three studies are to 1) assess the genetic diversity among the inbred lines adapted to the cold regions of Japan from SSR analysis of the 60 loci distributed uniformly throughout maize genome, 2) establish an assignment method of the inbred lines developed from the European hybrids from the mean GS estimates derived from a smaller number of SSR loci, which were chosen based on the differences in the mean allele frequency between the dent and flint groups, and 3) identify QTLs for the early flowering of an elite Northern flint inbred line toward establishment of MAS for the early flowering.
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