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New Miscanthus hybrid discovery in Japan could open doors for biofuel industry
Date:12/21/2010

his colleagues, Aya Nishiwaki of the University of Miyazaki and Toshihiko Yamada of Hokkaido University, they set out to search for these rare Miscanthus hybrids.

Last year, Nishiwaki was surprised to find a M. sacchariflorus plant, which was adjacent to some M. sinensis plants, with heavy seed set. M. sacchariflorus in Japan normally spreads vegetatively rather than through seed. Nishiwaki collected this seed, grew it out, and then used flow cytometry to determine the genome size of each of plants. Genome size can be used to detect hybridization events. In analyzing several seeds, their research revealed three triploid plants, which, based on some preliminary molecular analysis, were confirmed to be hybrids.

Researchers hope these new triploid plants will express phenotypic traits similar to that of the high-yielding M. x giganteus. But if they don't, Stewart said they can still serve as sources of genetic variation that might express resistance to recently identified diseases and pests in the M. x giganteus.

M. x giganteus, the first known natural Miscanthus hybrid, was originally found in Japan and then made its way to Europe where it was initially used as an ornamental grass for estates or large gardens, Stewart said. It's a highly productive grass that's cold-hardy, notably for plants that use C4 photosynthesis, which are mostly found in the subtropics and tropics.

It is a popular candidate for bioenergy production because it can grow up to 15 feet tall, creating more biomass than other varieties of Miscanthus.

Stewart and his team have received funding to continue searching for hybrids and to build up a diverse collection of plants of several native Miscanthus species throughout Japan. This collection will serve as a resource for the Energy Biosciences Institute located in the Institute for Genomic Biology at the U of I. Future research will al
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Contact: Jennifer Shike
jshike@illinois.edu
217-244-0888
University of Illinois College of Agricultural, Consumer and Environmental Sciences
Source:Eurekalert  

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