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Featured researches published by Shohei Hirose.


Economic Botany | 2000

Sago palm (Metroxylon sagu, Arecaceae) production in the eastern archipelago of Indonesia: variation in morphological characteristics and pith dry-matter yield.

Hiroshi Ehara; Slamet Susanto; Chitoshi Mizota; Shohei Hirose; Tadashi Matsuno

Eleven local varieties of sago palm (Metroxylon sagu Rottb.) in southeast and north Sulawesi and in northern Maluku were studied: one variety with a weak black band on the back of the petiole: three varieties with a brown band on the back of the petiole: seven bandless varieties comprising two spineless, four short spine and one long spine types. Large variation in morphological characteristics and pith dry-matter yield were estimated at 13 to 34% and 55%, respectively. The difference in pith dry-matter yield is mainly attributed to trunk diameter and dry-matter percentage of pith. Trunk diameter was not affected by the length of growth period, which might reflect the palm’s own characteristics, such as genetic background and growth environment. The dry-matter percentage of pith was not related to any characteristics measured. The pith dry-matter yield was highest in the short spine type, followed by the spineless and the long spine types.RésuméDalam survey tersebut dipelajari sebelas varitas sagu lokal (Metroxylon sagu Rottb.) di Sulawesi Tenggara, Sulawesi Utara, dan Maluku Utara: satu varitas dengan pita sedikit hitam pada bagian belakang dari tulang daun: tiga varitas dengan pita coklat pada bagian belakang belakang dari tulang daun: tujuh varitas tanpa pita terdiri dari dua varitas tanpa duri, empat varitas duri pendek dan satu varitas duri panjang. Terdapat adanya keragaman pada karakteristik morfologi dan hasil bahan kering empulur batang yang diperkirakan beriurut-turut berkisar 13 sampai 34% dan 55%. Perbedaan pada hasil bahan kering empulur batang terutama tergantung pada diameter batang dan proporsi kering empulur batang. Diameter batang tidak dipengaruhi oleh panjangnya periode tumbuh; namun nampaknya lebih terkait dengan gambaran karakteristik khusus, seperti latar belakang genetik dan lingkungan tumbuhnya.Persen bobot kering empulur batang tidak ada hubungannya dengan berbagai karakteristik yang diteliti. Hasil bahan kering empulur batang tertinggi adalah pada tipe duri pendek (511kg/batang), diikuti tipe tanpa duri (417kg/batang) dan tipe duri panjang (329kg/batang).


Agricultural and biological chemistry | 1983

Biochemical Changes in Secondary Metabolites in Wounded and Deteriorated Cassava Roots

Yoshiyuki Tanaka; Emma S. Data; Shohei Hirose; Takeshi Taniguchi; Ikuzo Uritani


Agricultural and biological chemistry | 1983

Relationship between Secondary Metabolism Changes in Cassava Root Tissue and Physiological Deterioration

Ikuzo Uritani; Emma S. Data; Ruth Juliet A. Villegas; Prescy Flores; Shohei Hirose


Agricultural and biological chemistry | 1984

Effect of pruning treatment on physiological deterioration in cassava roots.

Yoshiyuki Tanaka; Emma S. Data; Virginia G. Lape; Cynthia Dolores V. Villegas; Marieta Gorgonio; Shohei Hirose; Ikuzo Uritani


Japanese Journal of Crop Science | 1984

Relation between Respiration and Post-Harvest Deterioration in Cassava Roots

Shohei Hirose; Emma S. Data; Marcelo A. Quevedo; Ikuo Uritani


Japanese Journal of Crop Science | 1984

Physiological Deterioration and Ethylene Production in Cassava Roots after Harvest, in Relation with Pruning Treatment

Shohei Hirose; Emma S. Data; Yoshiyuki Tanaka; Ikuzo Uritani


Japanese journal of tropical agriculture | 1993

Transmigration Scheme and Rehabilitation of Alang-alang (Imperata cylindrica) Land in Indonesia

Shohei Hirose


Japanese journal of tropical agriculture | 1997

Development of Technique for F1 Seed Production in Barley

Nobuyuki Kurauchi; Tokuhiko Makino; Shohei Hirose


Japanese journal of tropical agriculture | 1994

Regeneration of Agro-Forest-Ecosystems in Subsaharan Africa

Shohei Hirose


Japanese journal of tropical agriculture | 1988

Food Production and Traditional Farming Technology in The Embu District, Kenya

Shohei Hirose

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Ikuzo Uritani

Nagoya Women's University

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Kazuma Nojima

Japan International Cooperation Agency

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Tadashi Matsuno

Tokyo University of Agriculture

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Slamet Susanto

Bogor Agricultural University

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