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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati BERITA BIOLOGI Manilkara: Journal of Bioscience
Yuyu Suryasari Poerba
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Neuroscience Veterinary

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Journal : BERITA BIOLOGI

 1 
PENAMPILAN GENOTIPE SOM JAWA {Talinumpaniculatum Jacq. (Gaertn.)} PADA GERERASI M2 Yuyu Suryasari Poerba
BERITA BIOLOGI Vol 7, No 3 (2004)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v7i3.1062

Abstract

Javasom [Talinum paniculatum Jacq. (Gaertn.] is one of popular vegetable plants with potential medicinal properties.The plant root is often used as a substitute for ginseng (Panax ginseng L.), and the leaves are used as a vegetable and as a substitute for purslane (Portulaca olaraeae L.).An effort to improve genetic quality of the plant was made through induced mutation with ethyl methane sulphonate (EMS).A variety of EMS dosages (0, 0.3%, 0.6%, 0.9%, 1.2%, 1.5% and 1.8%) were applied to javasom seeds to induce mutation for 24 hours at room temperature. A population of the first and second generation after mutagen treatment (M, and M2,respectively) was established and observed at vegetative and generative stages. At M, generation, plant growth was suppressed and plant yield was decreased.Chimeras and chlorophyll mutation were observed in every EMS-treatment level, which was indicated that mutation was induced in the plant. Lethal-dosage (LD-50) of EMS was at 1.2%-1.5%. M, population were recovered and showed variation in all parameters observed. High genetic variation coefficients were found in most of plant characters observed.All parameters have a medium to high heritability, which indicated that all parameter observed were relatively easily inherited.However, all genotypes are subjected to be evaluated in the next generation in their performance stability.
TOLERANSI BEBERAPA GENOTIPE Vigna umbellata (THUMB.) TERHADAP SUHU TINGGI PADA BERBAGAI TAHAP PERTUMBUHAN Yuyu Suryasari Poerba; Fauzia Syarif
BERITA BIOLOGI Vol 4, No 5 (1999)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v4i5.1243

Abstract

Degree of electrolyte leakage (EL) from leaf tissue after exposure to high temperature has been used as an indicator of heat tolerance. Inthe present study, EL was measured in an attempt to estimate heat tolerance of Viana umbellata (Thumb.) genotypes at three different growth phases. The degree of heat injury is significantly different among the three growth phases and among the genotypes as well as their interaction. However, the degree of heat injury tends to increase over the plant growth. The 18 genotypes of V. umbellata shows moderate genetic variability as shown by its value of genetic variance (46,25 ±16,35), phenotypic variance (85,37 ±27,60), and coefficient of genetic variation (26,36%).
Co-Authors Diah Martanti Diyah Martanti Elizabeth A. Widjaya Fajarudin Ahmad FAUZIA SYARIF Herlina Tri Handayani