Hiroshi Hayakawa - Articles - Scientific Research Publishing

Difference of Curcumin Content in Curcuma longa L. (Zingiberaceae) Caused by Hybridization with Other Curcuma Species (Articles)

Hiroshi Hayakawa, Yukio Minaniya, Katsura Ito, Yoshinori Yamamoto, Tatsuya Fukuda

American Journal of Plant Sciences Vol.2 No.2，July 1, 2011

DOI: 10.4236/ajps.2011.22013 11,070 Downloads 22,708 Views Citations
A Breakdown of Obligate Mutualism on a Small Island: An Interspecific Hybridization between Closely Related Fig Species (Ficus pumila and Ficus thunbergii) in Western Japan (Articles)

Lum Tsai, Hiroshi Hayakawa, Tatsuya Fukuda, Jun Yokoyama

American Journal of Plant Sciences Vol.6 No.1，January 15, 2015

DOI: 10.4236/ajps.2015.61014 3,277 Downloads 4,202 Views Citations
Development of a Molecular Marker to Identify a Candidate Line of Turmeric (Curcuma longa L.) with a High Curcumin Content (Articles)

Hiroshi Hayakawa, Tetsuya Kobayashi, Yukio Minaniya, Katsura Ito, Akira Miyazaki, Tatsuya Fukuda, Yoshinori Yamamoto

American Journal of Plant Sciences Vol.2 No.1，March 4, 2011

DOI: 10.4236/ajps.2011.21002 8,400 Downloads 18,577 Views Citations
Introgressive Hybrids of Arisaema sikokianum and A. tosaense (Araceae) Confirmed through Nuclear and Chloroplast DNA Comparisons (Articles)

Hiroshi Hayakawa, Hidenori Hamachi, Kanako Matsuyama, Yuko Muramatsu, Yukio Minamiya, Katsura Ito, Jun Yokoyama, Tatsuya Fukuda

American Journal of Plant Sciences Vol.2 No.3，September 30, 2011

DOI: 10.4236/ajps.2011.23034 4,672 Downloads 8,116 Views Citations
Nucleotide Sequence Variations in a Medicinal Relative of Asparagus, Asparagus cochinchinensis (Lour.) Merrill (Asparagaceae) (Articles)

Tatsuya Fukuda, In-Ja Song, Takuro Ito, Hiroshi Hayakawa, Yukio Minamiya, Akira Kanno, Hokuto Nakayama, Jun Yokoyama

American Journal of Plant Sciences Vol.2 No.6，December 5, 2011

DOI: 10.4236/ajps.2011.26091 4,347 Downloads 7,484 Views Citations
Correlation between Sex Stages and Leaf Numbers in Arisaema tosaense Makino (Araceae) (Articles)

Yuko Muramatsu, Kanako Matsuyama, Hiroshi Hayakawa, Yukio Minamiya, Katsura Ito, Ryo Arakawa, Tatsuya Fukuda

American Journal of Plant Sciences Vol.3 No.1，December 31, 2011

DOI: 10.4236/ajps.2012.31012 4,269 Downloads 7,195 Views Citations
Interspecific Hybridization between Arisaema sikokianum and A. serratum (Araceae) Confirmed through Nuclear and Chloroplast DNA Comparisons (Articles)

Hiroshi Hayakawa, Hidenori Hamachi, Kanako Matsuyama, Yuko Muramatsu, Yukio Minamiya, Katsura Ito, Jun Yokoyama, Tatsuya Fukuda

American Journal of Plant Sciences Vol.2 No.4，October 31, 2011

DOI: 10.4236/ajps.2011.24061 4,848 Downloads 9,177 Views Citations
Observation and Data Archiving System of a Superconducting Gravimeter at Syowa Station, Antarctica (Articles)

Yuichi Aoyama, Hiroshi Ikeda, Hideaki Hayakawa, Koichiro Doi, Yoichi Fukuda, Kazuo Shibuya

International Journal of Geosciences Vol.6 No.10，October 28, 2015

DOI: 10.4236/ijg.2015.610087 2,558 Downloads 3,215 Views Citations
Phylogeography of Asparagus schoberioides Kunth (Asparagaceae) in Japan (Articles)

Tatsuya Fukuda, In-Ja Song, Hokuto Nakayama, Takuro Ito, Akira Kanno, Hiroshi Hayakawa, Yukio Minamiya, Jun Yoko Yama

American Journal of Plant Sciences Vol.2 No.6，December 5, 2011

DOI: 10.4236/ajps.2011.26093 4,546 Downloads 8,258 Views Citations
Comparative Study of Leaf Morphology in Aster hispidus Thunb. var. leptocladus (Makino) Okuyama (Asteraceae) (Articles)

Hiroshi Hayakawa, Tunala, Yukio Minamiya, Katsura Ito, Stephan Gale, Jun Yokoyama, Ryo Arakawa, Tatsuya Fukuda

American Journal of Plant Sciences Vol.3 No.1，December 31, 2011

DOI: 10.4236/ajps.2012.31011 4,389 Downloads 8,522 Views Citations
Comparative Morphology and Anatomy of Non-Rheophytic and Rheophytic Types of Adenophora triphylla var. Japonica (Campanulaceae) (Articles)

Kyohei Ohga, Miwako Muroi, Hiroshi Hayakawa, Jun Yokoyama, Katsura Ito, Shin-Ichi Tebayashi, Ryo Arakawa, Tatsuya Fukuda

American Journal of Plant Sciences Vol.3 No.6，June 21, 2012

DOI: 10.4236/ajps.2012.36097 4,775 Downloads 7,892 Views Citations
Evaluation of genetic diversity and conservation priorities for Egyptian chickens (Articles)

Sherif Ramadan, Boniface B. Kayang, Eiji Inoue, Keijiro Nirasawa, Hiroshi Hayakawa, Shin’ichi Ito, Miho Inoue-Murayama

Open Journal of Animal Sciences Vol.2 No.3，July 26, 2012

DOI: 10.4236/ojas.2012.23025 5,745 Downloads 10,910 Views Citations
Variation in the Leaf Number of Arisaema iyoanum subsp. nakaianum and A. ovale var. ovale (Araceae) (Articles)

Kanako Matsuyama, Hiroshi Hayakawa, Yuko Muramatsu, Katsura Ito, Shin-Ichi Tebayashi, Ryo Arakawa, Jun Yokoyama, Tatsuya Fukuda

American Journal of Plant Sciences Vol.4 No.1，January 31, 2013

DOI: 10.4236/ajps.2013.41006 3,616 Downloads 5,167 Views Citations
Comparative Analyses of Stomatal Size and Density among Ecotypes of Aster hispidus (Asteraceae) (Articles)

Yoshimasa Kumekawa, Haruki Miyata, Kyohei Ohga, Hiroshi Hayakawa, Jun Yokoyama, Katsura Ito, Shin-ichi Tebayashi, Ryo Arakawa, Tatsuya Fukuda

American Journal of Plant Sciences Vol.4 No.3，March 18, 2013

DOI: 10.4236/ajps.2013.43067 4,449 Downloads 6,892 Views Citations
Coastal Adaptation of Adenophora triphylla var. japonica (Campanulaceae) (Articles)

Kyohei Ohga, Miwako Muroi, Hiroshi Hayakawa, Jun Yokoyama, Katsura Ito, Shin-Ichi Tebayashi, Ryo Arakawa, Tatsuya Fukuda

American Journal of Plant Sciences Vol.4 No.3，March 26, 2013

DOI: 10.4236/ajps.2013.43078 3,977 Downloads 6,282 Views Citations
Morphological and Anatomical Variations in Rheophytic Ecotype of Violet, Viola mandshurica var. ikedaeana (Violaceae) (Articles)

Ryosuke Matsui, Shogo Takei, Kyohei Ohga, Hiroshi Hayakawa, Masataka Yoshida, Jun Yokoyama, Katsura Ito, Ryo Arakawa, Toshiro Masumoto, Tatsuya Fukuda

American Journal of Plant Sciences Vol.4 No.4，April 22, 2013

DOI: 10.4236/ajps.2013.44106 4,028 Downloads 6,304 Views Citations
The Length and Density of Prickles on Zanthoxylum ailanthoides (Rutaceae): A Comparison of Japanese Islands with Different Sika Deer Browsing Pressures (Articles)

Shogo Takei, Kazuhiro Yoshioka, Satoru Yamada, Hiroshi Hayakawa, Jun Yokoyama, Katsura Ito, Shin-Ichi Tebayashi, Ryo Arakawa, Tatsuya Fukuda

American Journal of Plant Sciences Vol.5 No.3，February 8, 2014

DOI: 10.4236/ajps.2014.53046 3,615 Downloads 5,301 Views Citations
Morphological Study of Glochidion obovatum under Heavy Browsing Pressure by Sika Deer (Articles)

Shogo Takei, Kazuhiro Yoshioka, Satoru Yamada, Hiroshi Hayakawa, Jun Yokoyama, Katsura Ito, Shinichi Tebayashi, Ryo Arakawa, Tatsuya Fukuda

American Journal of Plant Sciences Vol.5 No.9，April 16, 2014

DOI: 10.4236/ajps.2014.59148 3,571 Downloads 5,151 Views Citations
Stability Analysis of Cliff Face around Kegon Falls in Nikko, Eastern Japan: An Implication to Its Erosional Mechanisms (Articles)

Yuichi S. Hayakawa

International Journal of Geosciences Vol.4 No.6B，August 20, 2013

DOI: 10.4236/ijg.2013.46A2002 4,638 Downloads 6,863 Views Citations
This article belongs to the Special Issue on Geography
On the Tempo-Spatial Evolution of the Lower Ionospheric Perturbation for the 2016 Kumamoto Earthquakes from Comparisons of VLF Propagation Data Observed at Multiple Stations with Wave-Hop Theoretical Computations (Articles)

Tomokazu Asano, Masashi Hayakawa

Open Journal of Earthquake Research Vol.7 No.3，July 23, 2018

DOI: 10.4236/ojer.2018.73010 794 Downloads 1,436 Views Citations

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