Faculty Profiles - EHARA Hiroshi

Papers - EHARA Hiroshi

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Colonization of Roots in Sago Palm Seedlings Associated with Commercial Mycorrhizal Inocula Reviewed

Asano, K, Isoi, Y, Murano, H, Azhar, A, Pasolon, Y. B, Ehara, H

Sago Palm Vol. 27 ( 1 ) page： 9 - 14 2019.10

Phylogenetic Study of Metroxylon Palms in Southeast Asia and Oceania Based on 5S nrDNA Spacer Sequence Data Reviewed

Hiroshi Ehara, Toshiki Yamamoto, Tohru Tsuchiya, Hitoshi Naito, John, L. Dowe, Will C. McClatchey, Takashi Mishima, Akemi Itaya, Chitoshi Mizota, Yulius B. Pasolon, Philimon Ala, Marika Tuiwawa, Alivereti Naikatini, Issac A. Rounds, Talie Foliga, Siosinamele Lui, Samantha Kwan

SAGO PALM Vol. 26 ( 2 ) page： 37 - 43 2019.2

A Value Chain Analysis of Small-Scale Sago Industries: A Case Study of South Sulawesi, Indonesia Reviewed International coauthorship

Marlisa Ayu Trisia, Andi Patiware Metaragakusuma, Katsuya Osozawa, and Hiroshi Ehara

Sago Palm Vol. 26 ( 1 ) page： 1-12 2018.12

Responses of sago palm under water deficiency condition Reviewed International coauthorship International journal

Prathumyot W., Chitaree L., Chakhatrakan S., Romkaew J., Waramit N., Matta F., Ehara H.

International Journal of Agricultural Technology Vol. 14 ( 7 ) page： 1679 - 1684 2018.12

Photosynthesis of sago palm (Metroxylon sagu rottb.) seedling at different air temperatures International coauthorship International journal

Aidil Azhar, Daigo Makihara, Hitoshi Naito, Hiroshi Ehara

Agriculture (Switzerland) Vol. 8 ( 1 ) page： 4 - 4 2018.1

Language：English Publishing type：Research paper (scientific journal) Publisher：MDPI AG

Photosynthetic activities of the sago palm (Metroxylon sagu Rottb.) were studied to find out its sensitivity to changes in ambient air temperature. The minimum ambient air temperature designed for the experiment was 25–29 °C, while the higher end was 29–33 °C. Several photosynthetic parameters were studied to support our analysis in sago photosynthetic activity, including diurnal leaf gas exchange, assimilation rate vs. CO2 concentration, leaf greenness, leaf chlorophyll content, and photosynthetic rate vs. irradiance. We found that sago palm photosynthetic activity tends to be more sensitive to minimum than to maximum ambient air temperature. The plants exposed to higher air temperatures had dark green leaf color associated with higher rates of diurnal photosynthesis, chlorophyll content, and rubisco limited photosynthetic activity. They also exhibited higher trend in optimum irradiance absorption level. Consequently, maximum light energy dissipation occurred at higher temperatures.

DOI： 10.3390/agriculture8010004

Web of Science

Scopus

High-level ethanol production from sago residue hydrolysate prepared with thermostable α-amylase and amyloglucosidase Reviewed International coauthorship

Utami, A., Isono, N. and Ehara, H.

Sago Palm Vol. 25 ( 1 ) page： 14-20 2017.7

Effects of wet milling sago pith waste on yield and physical properties of sago starch Reviewed International journal

Santoso, H, Sakakura, K, Naito, H, Ohmi, M, Nishimura, Y, Uchiyama, T, Itaya, A, Hisamatsu, M, Ehara, H, Mishima, T

International Journal of Engineering & Technology Vol. 17 ( 2 ) page： 1 - 6 2017.4

A rapid quantification method for tissue Na+ and K+ concentrations in salt-tolerant and susceptible accessions in Vigna vexillata (L.) A. Rich Reviewed International coauthorship International journal

Kohtaro Iseki, Rusama Marubodee, Hiroshi Ehara, Norihiko Tomooka

PLANT PRODUCTION SCIENCE Vol. 20 ( 1 ) page： 144 - 148 2017

Language：English Publishing type：Research paper (scientific journal) Publisher：TAYLOR & FRANCIS LTD

A rapid quantification method for leaf sodium (Na+) and potassium (K+) concentrations was developed using a compact ion meter. Leaf ion concentrations were evaluated for species of Vigna vexillata (L.) A. Rich. after two weeks of treatment with 0-200 mM of sodium chloride. To compare the ion extraction efficiency, extraction solutions of distilled water and ammonium acetate were tested. The ion concentrations of extracts obtained by both solutions were measured using an ion meter, and the values were validated using ion chromatography. For both extraction solutions, the ion meter values were highly correlated with those of the ion chromatograph. However, correlations between ion meter and chromatograph values were largely different for Na+ and K+. The rapid quantification of ion concentrations using an ion meter developed in this study was successfully utilized for evaluating differences in leaf Na+ concentrations, K+ concentrations, and K+/ Na+ ratio in species of V. vexillata.

DOI： 10.1080/1343943X.2016.1251826

Web of Science

Scopus

Effect of biogas effluent from pig manure and durian residues on soil chemical property and growth of marigold Reviewed International journal

Chit-aree, L, Ehara, H, Chakhatrakan, S, Prathumyot, W, Frank, B. M

International Journal of Agricultural Technology Vol. 13 ( 7.1 ) page： 1285 - 1293 2017

Effect of different aluminum concentrations in culture media on growth characteristics of sago palm seedlings Reviewed International coauthorship

Chutimanulul, P., T. Inagaki, H. Naito, M. Goto and H. Ehara

SAGO PALM Vol. 24 ( 1 ) page： 1-19 2016.8

Growth characteristics of two Indonesian rice cultivars under several submerged durations Reviewed

Irmawati, H. Ehara, I. Kodama, M. Osawa, R. A. Suwignyo, A. Junaedi and J. Sakagami

Tropical Agriculture and Development Vol. ６０ ( １ ) page： 40−47 2016.3

Effects of the Higher Top to Basal Nitrogen Dressing Ratio on Growth and Yield of Wheat Reviewed

Watanabe Kazuhiro, Nakazono Kou, Nakamura Daisuke, Nishitani Tomohiro, Nishimura Natsuki, Matsushima Hiroaki, Tanio Masahiko, Ehara Hiroshi

Japanese Journal of Crop Science Vol. 85 ( 4 ) page： 373 - 384 2016

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：CROP SCIENCE SOCIETY OF JAPAN

<p>In order to develop a high-yielding culture method for wheat we examined the effects of a higher top to basal nitrogen dressing ratio (HTBD) on the growth and yield of the new lodging tolerant variety "Satonosora" for two years. The reduced basal dressing accompanied with increased top dressing, increased the leaf area index (LAI) after jointing stage, and maintained a high net assimilation rate (NAR) during the late ripening period resulting in increased dry matter production. On the other hand, smaller stem number due to reduced basal dressing and plentiful nitrogen top dressing at the jointing stage were considered to alleviate competition of assimilate and nitrogen among stems and improved stem survival rate, resulting in both larger panicle number and panicle size. High NAR during the late ripening period might also increase the 1000 grain weight. As a result of the increased dry matter production and yield components, a HTBD increased the yield of wheat by 15 - 50%. On the other hand, some problems hindering practical use were clarified; delay of maturation, decline in the apparent quality, excess grain protein content, and acceleration of soil acidification. </p>

DOI： 10.1626/jcs.85.373

Scopus

CiNii Books

CiNii Research

Durian residues as potential resource for biogas;production in;an;anaerobic systemInternational Journal of Agricultural Technology 12(7.1): 1265-1273 Reviewed

Prathumyot, W, Prasopphonrangsi, P, Chit-aree, L, Ehara, H, Chakhatrakan, S

International Journal of Agricultural Technology Vol. 12 ( 7.1 ) page： 1265 - 1273 2016

Rural socio-economic development: A comparative study of Thai and Japanese experiences on organic Farming Reviewed International journal

Suindramedhi, S, Tokuda, H, Ehara, H

GMSARN International Journal Vol. 10 page： 57 - 68 2016

Swamp rice cultivation in South Sumatra, Indonesia: an overview Reviewed

Irmawati1, H. Ehara, R. A. Suwignyo and J. Sakagami

Trop. Agr. Develop. Vol. 59 page： 35-39 2015

Salt tolerance in wild relatives of adzuki bean, Vigna angularis (Willd.) Ohwi et Ohashi Reviewed

Yoshida,Y., R. Marubodee, E. Ogiso-Tanaka, K. Iseki, T. Isemura, Y. Takahashi, C. Muto, K. Naito, A. Kaga,K. Okuno, H. Ehara and N. Tomooka

Genetic Resources and Crop Evolution 2015

Construction of an SSR and RAD-marker based molecular linkage map of Vigna vexillata (L.) A. Rich. Reviewed

Marubodee, R., E. Ogiso-Tanaka, T. Isemura, S. Chankaew, A. Kaga, K. Naito, H. Ehara and N. Tomooka

PLoS ONE 2015

Rate of assimilation total and relative growth of drought tolerant rice on paddy system (Laju asimilasi bersih dan laju tumbuh relatif varietas padi toleran kekeringan pada sistem sawah) Reviewed International coauthorship

Maisura, Chozin, M. A., Lubis, I., Junaedi, A. and Ehara, H.

Jurnal Agrium Vol. 12 ( 1 ) page： 10 - 16 2015

Effects of micro powder milling on physicochemical properties of sago starch Reviewed International coauthorship

Santoso, B., Sakakura, K., Naito, H., Ohmi, M., Nishimura, N., Uchiyama, T., Itaya, A., Hisamatsu, H., Ehara, H. and Mishima, T.

Journal of Applied Glycoscience Vol. 62 page： 73 - 80 2015

Preparation of biodegradable foam from sago residue Reviewed

Utami, A. S., T. C. Sunarti, N. Isono, M. Hisamatsu and H. Ehara

SAGO PALM Vol. 22 page： 1-5 2014

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Papers - EHARA Hiroshi