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All Journal Jurnal Ilmu-Ilmu Pertanian Indonesia BERITA BIOLOGI
Dody Priadi
Pusat Penelitian Bioteknologi-LIPI
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Shorea henryana - JENIS MERANTINON REKALSITRANT Usep Soetisna; Dody Priadi
BERITA BIOLOGI Vol 7, No 5 (2005)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v7i5.879

Abstract

Shorea henryana - a member species of Dipterocarpaceae known as white meranti. Ecologically distributed on lowland Dipterocarp forest and flourishing in coastal areas. A fairly large tree up to 40 m tall with bole up to 115 cm diameter. Seeds were dispatched from Thailand and showing 72% germination and initial moisture content of 20.3%. First lot of seeds were dried to moisture content 12.5%, 9.4% and 6.1% respectively. Germination of seeds dried to 6.1% m.c. was still relatively high (68%). Contrary to the desiccation resistance, however, the dried seeds seemed not to withstand relatively low temperature for Shorea species, i.e. 14-16 C. Further study will be needed as to investigate a proper storage treatment for this important woody species.
PADI ORGANIK VERSUS NON ORGANIK: STUDI FISIOLOGI BENIH PADI (Oryza sativa L.) KULTIVAR LOKAL ROJOLELE Dody Priadi; Tatang Kuswara; Usep Soetisna
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 2 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.2.130-138

Abstract

Study of the effect of organic and non-organic farming practice of rice (Oryza sativa L.) cv. Rojolele on seed physiology was carried out in Cipanas, West Java (on-farm) and in the laboratory of BSJ3 and greenhouse of RC for Biotechnology  (off-farm). Parameters were recorded particularly on seed germination percentage, water content, dormancy behavior and morphology. On-farm study results showed that germination percentage of organic seeds was higher (88.3% at water content of 13.4%) than those non-organic seeds (20.0% at water content of 10.2%). Results of off-farm study showed that the plant height of those organic seeds was higher than those non-organic seeds. On-farm practice the harvest after 150 days showed that the non-organic seeds produced more yellow grains (44.8%) than those of organic seeds (39.6%). A total grain per plant produced by the non-organic seeds was higher than those organic seeds, however, total percentage of the filled out organic seeds was higher (57.8%) than those non-organic seeds (40.1%). Organic seeds seem to be more dormant than those non-organic seeds after storage for 12 months. Grain weight of both non-organic and organic was 17-19 g per 1000 seeds. Germination of off-farm non-organic seeds was 98.0%, whereas those organic seeds were 95.0% at water content of 10.8% respectively. In view of seed physiology, organic rice quality better than those non- organic because they contain more filled out seeds, even though the organic rice harvesting time longer than those non-organic. Although off-farm study represented seed physiology of either organic or non-organic seeds, on-farm study needs to be further done on all aspects of seed physiology.
Co-Authors Tatang Kuswara Usep Soetisna