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All Journal Bumi Lestari Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Berkala Penelitian Hayati
Mangadas Lumban Gaol
Jurusan Biologi Fakultas Sains Dan Teknik (FST) Universitas Nusa Cendana Kupang NTT
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology

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DAMPAK DERAAN KEKERINGAN P ADA FASE INISIASI BUNGA, FASE BERBUNGA DAN FASE PEMBENTUKAN POLONG T ERHADAP PEMBENTUKAN BUNGA DAN BUAH P ADA EMPAT VARIETAS VIGNA RADIATA Gaol, Mangadas Lumban; Ruma, Maria Longa; Sianturi, Hery Leo
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 14, No 1 (2009): February 2009
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (204.129 KB) | DOI: 10.24002/biota.v14i1.2634

Abstract

One of the greatest affected factors toward the growth of V. radiata is considered as the availability of water. Obviously, less production of V. radiata is due to short water supply. This research shows that flower initiation, flowering and fruiting to reproduction of four V. radiata varieties (Belu, Kenari, Perkutut and Murai), affected by drought are taken under this investigation. Based on numbers of initiated pod flowers and pods being produced, the most sensitive reproduction stages to drought in Belu variety were flower initiation and flowering, Kenari variety were flowering, Murai variety were flowering and fruiting, and Perkutut variety in all reproduction stages posses relatively similar level of sensitivity to drought. Generally, number of flowers initiated pods and the number of pods produced were higher in Kenari and Murai varieties compared to those on Perkutut and Belu. Based on numbers of flowers initiated pods and numbers of pods production, drought at flower initiation and flowering stage were more highly affected on Belu and Perkutut varieties compared to that of Kenari and Murai. Droughts on fruiting stage are highly affected on Perkutut varieties as well compared to other varieties. Therefore, based on plants production and their tolerance to drought, the best plants to be cultivated are Kenari and Murai.
EFEKTIFITAS EMPAT SPESIES LEGUM SEBAGAI INANG ANTARA TANAMAN HEMI-PARASIT CENDANA (SANTALUM ALBUM L.) Mangadas Lumban Gaol; Maria Longa Ruma
Bumi Lestari Journal of Environment Vol 9 No 2 (2009)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Research to investigate the effectively of four legume species as intermediate host of sandalwood was conducted. Research consist of five treatments; in four treatments, sandalwood was grown with C. siamea, A. leucophloea, A. farnesiana or A. villosa while in one experiment sandalwood was grown without host. Host treatment significanlty affected growth of sandawood. Based on sandalwood height, of four legumes used the best host for sandalwood was A. farnesiana. Host treatment also affected sandalwood biomass. Root, stem and leaf biomass of sandalwood grown with A. farnesiana were higher compare to grown with other host. Generally, based on sandalwood biomass, C. siamea did not affected growth of sandalwood while A. leuophloea and A. villosa tend to reduce growth of sandalwood. Number of leaf and leaf area were also different between treatments. The highest was in sandalwood grown with C. siamea and A. farnesiana while grown with other host were lower. Root length was marginally different between treatments. However, root of sandalwood grown with host was longer compare to sandalwood grown without host.
Dampak Deraan Kekeringan p ada Fase Inisiasi Bunga, Fase Berbunga dan Fase Pembentukan Polong t erhadap Pembentukan Bunga dan Buah p ada Empat Varietas Vigna radiata Mangadas Lumban Gaol; Maria Longa Ruma; Hery Leo Sianturi
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 14, No 1 (2009): February 2009
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v14i1.2634

Abstract

One of the greatest affected factors toward the growth of V. radiata is considered as the availability of water. Obviously, less production of V. radiata is due to short water supply. This research shows that flower initiation, flowering and fruiting to reproduction of four V. radiata varieties (Belu, Kenari, Perkutut and Murai), affected by drought are taken under this investigation. Based on numbers of initiated pod flowers and pods being produced, the most sensitive reproduction stages to drought in Belu variety were flower initiation and flowering, Kenari variety were flowering, Murai variety were flowering and fruiting, and Perkutut variety in all reproduction stages posses relatively similar level of sensitivity to drought. Generally, number of flowers initiated pods and the number of pods produced were higher in Kenari and Murai varieties compared to those on Perkutut and Belu. Based on numbers of flowers initiated pods and numbers of pods production, drought at flower initiation and flowering stage were more highly affected on Belu and Perkutut varieties compared to that of Kenari and Murai. Droughts on fruiting stage are highly affected on Perkutut varieties as well compared to other varieties. Therefore, based on plants production and their tolerance to drought, the best plants to be cultivated are Kenari and Murai.
Pengaruh Variasi Ukuran Biji Terhadap Perkecambahan Acacia Fauntleroyi (Maiden) Maiden and Blakely Mangadas Lumban Gaol; J.E.D. Fox
JURNAL PENELITIAN BIOLOGI BERKALA PENELITIAN HAYATI Vol 14 No 2 (2009): June 2009
Publisher : The East Java Biological Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1219.53 KB) | DOI: 10.23869/250

Abstract

The aim of this study was to investigate to what extent are germination of A. fauntleroyi affected by seed size. Does pre-treatment improve germination? Under what temperature regime does most seed germinate? Three seed size classes (small, medium and large) were chosen. Seeds were pre-treatments either at ambient, 50°C, 75°C or 100°C and incubated at 15°C or 30°C. Then, number of seed that germinate and speed of germination were measure. Five seeds representing each of small, medium and large seed sizes were also selected and the seed coat thickness measured. Seed size, pre-treatment temperature and incubation temperature all affected the number of seed that germinated. Pre-treatment temperature affected germination more than incubation temperature. Incubation temperature affected germination more than seed size. The interaction of seed size and pre-treatment temperature was stronger than that between seed size and incubation temperature. Small seeds produce less germination than medium or large seeds, however small seed germinated sooner. Seed coat thickness varied among seed sizes. Thinner seed coats occur in smaller than larger seeds.
Co-Authors Hery L. Sianturi J.E.D. Fox Maria Longa Ruma Maria Longa Ruma Maria Longa Ruma