NDLI: Discovery of Natural Interspecific Hybrids Between Miscanthus Sacchariflorus and Miscanthus Sinensis in Southern Japan: Morphological Characterization, Genetic Structure, and Origin

Content Provider	Springer Nature Link
Author	Tamura, Ken ichi Uwatoko, Naohiro Yamashita, Hiroshi Fujimori, Masahiro Akiyama, Yukio Shoji, Atsushi Sanada, Yasuharu Okumura, Kenji Gau, Mitsuru
Copyright Year	2015
Abstract	Natural Miscanthus grasses are useful for improving biomass production. We found a population of putative triploid interspecific hybrids between Miscanthus sacchariflorus and Miscanthus sinensis in southern Kyushu, Japan. This study aims to investigate its morphological variation, genetic structure, and origin. Miscanthus plants were collected from 114 points, mainly beside a river along a distance of 2.8 km in the Tashiro–Fumoto area. They resembled M. sacchariflorus but showed morphology intermediate between the two species. They had a nuclear DNA content corresponding to that of a hybrid between tetraploid M. sacchariflorus and diploid M. sinensis, and had species-specific alleles from both species revealed by DNA marker analysis. This indicates that the plants are triploid hybrids between M. sacchariflorus and M. sinensis. Genotyping using simple sequence repeat markers revealed only four genotypes among the hybrid population, of which two accounted for most plants. The genotypes showed mostly discrete geographical distributions. The two major genotypes showed contrasting phenotypes in pollen viability and in frequency of awns in florets. Some seeds collected from the population germinated and the seedlings showed a wide range of nuclear DNA content from diploid to tetraploid. In this area, many M. sinensis plants also grew, but we could not find M. sacchariflorus. The hybrid Miscanthus might be selected due to its improved adaptability introduced from M. sinensis. Furthermore, genetic and phenotypic characterization suggests the polyphyletic origin and clonal propagation of this population. Such partially fertile hybrids could be interesting for the improvement of Miscanthus as a biomass crop.
Starting Page	315
Ending Page	325
Page Count	11
File Format	PDF
ISSN	19391234
Journal	BioEnergy Research
Volume Number	9
Issue Number	1
e-ISSN	19391242
Language	English
Publisher	Springer US
Publisher Date	2015-11-07
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biomass crop Fertility Interspecific hybrid Miscanthus sacchariflorus Miscanthus sinensis Plant Sciences Plant Genetics & Genomics Plant Breeding/Biotechnology Plant Ecology Wood Science & Technology
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment Agronomy and Crop Science

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