Article Per Year (5 Year)
p-Index From 2019 - 2024
0.444
P-Index
This Author published in this journals
All Journal The Journal of Experimental Life Sciences (JELS) INDONESIAN JOURNAL OF ESSENTIAL OIL Berkala Penelitian Hayati
Wahyu Widoretno
Jurusan Biologi, Fakultas MIPA, Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Clonal Propagation of Vetiveria zizanioides L. through Tissue Culture Technique Wahyu Widoretno; Arbaul Fauziah; Serafinah Indriyani; Edi Priyo Utomo
INDONESIAN JOURNAL OF ESSENTIAL OIL Vol 2, No 1 (2017)
Publisher : Institut Atsiri Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (503.814 KB) | DOI: 10.21776/ub.ijeo.2017.002.01.05

Abstract

 In vitro propagation method for vetiver (Vetiveria zizanioides L.) had been effectively developed in this study. Several variations of media were used for shoot initiation and multiplication. Shoot formation was initiated from crown explant cultured on MS media with the addition of 2 mgL-1 of growth regulator Benzyladenine (BA).  Whereas for shoot multiplication, 3 mgL-1 of BA was evidently effective with the average shoot number was 126 shoots per explant. The application of high BA concentration (3-5 mgL-1) in multiplication media was capable of inducing more shoots, but the shoots resulted were shorter. In contrast, multiplication media supplemented with low BA concentration (1-2 mgL-1) yielded less shoots, but the shoots were longer. Plantlet regeneration was accomplished by inducing roots in the shoots yielded on MS media containing 1 mgL-1 growth regulator NAA. In vitro plants of vetiver had been successfully grown on soil media under greenhouse condition. By using foregoing method, it is possible to conduct mass propagation of vetiver through tissue culture technique.
SKRINING UNTUK TOLERANSI TERHADAP STRES KEKERINGAN PADA 36 VARIETAS KEDELAI PADA FASE PERKECAMBAHAN Wahyu Widoretno
JURNAL PENELITIAN BIOLOGI BERKALA PENELITIAN HAYATI Vol 16 No 2 (2011): June 2011
Publisher : The East Java Biological Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23869/290

Abstract

Water stress due to drought is the most significant abiotic factor limiting crop growth and development. Drought stress inhibit germination and seedling growth, and extention of inhibition in germination under drought stress condition is varying in varieties. The previous research result showed that the differences in germination response under drought stress can be used as early test for screening to drought tolerance in plants. The objectives of this experiment were to evaluate the germination response of 36 soybean varieties under drought stress simulated by polyethylene glycol (PEG), to know the drought-stress tolerance level of 36 soybean varieties based on germination response in medium containing PEG, and to identify drought tolerant varieties. Soybean seeds were germinated in sand medium containing several PEG (6000) at concentration 0%, 15% and 20% which equivalent to 0, -0,41 and -0,67 MPa during 5 days. Germination responses were observed by calculating vigor index, germination percentage, lateral root number and measuring hypocotyl and root lenght and seedling dry weight. The level of drought stress tolerance of soybean varieties were evaluated based on index of reduction and drought sensitivity on germination variables in stres and non-stres conditions. The research result showed that drought stress on germination media simulated by PEG decreased vigor index, germination percentage, lateral root number, hypocotyl and root lengths and dry weight of seedling. The inhibition of germination increased with reduction of water potential. The water potential -0,41 MPa inhibited vigor index and hypocotyls length in all tested varieties, but inhibited germination percentage, lateral root number and dry weight of seedling in some varieties. However, decreasing of water potential -0,67 MPa inhibited almost germination variables in all varieties, except root length. Each tested soybean variety showed differences of germination response to drought stres. Varieties of Dieng, Tidar and Sibayak showed less inhibition than others, but Anjasmoro, Burangrang, Galunggung, Kipas Putih and Tambora showed more inhibition in seedling growth. Based on index of reduction and drought sensitivity on germination variables, Dieng and Tidar were identified as tolerant varieties, while sixteen varieties as medium tolerant and seventeen varieties as sensitive ones.
The Effect of Gamma Irradiation on the Growth and Multiplication of the In Vitro Shoot of Patchouli (Pogostemon cablin Benth.) Yunia Efrice Banyo Efrice Banyo; Serafinah Indriyani; Wahyu Widoretno
The Journal of Experimental Life Science Vol. 10 No. 2 (2020)
Publisher : Postgraduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2020.010.02.11

Abstract

The objective of this research was to evaluate the effect of gamma irradiation on shoot growth and multiplication of Patchouli (Pogostemon cablin Benth.) Two weeks-old in vitro shoots were irradiated gamma-ray, at doses of 0, 15, 30, 45, 60, and 75 Gy. The control shoot was not irradiated. The irradiated shoots were cultured on Murashige and Skoog (MS) medium supplemented with 0.1 mg.L-1 NAA and 0.3 mg.L-1 BA and incubated in a growth room for eight weeks at a temperature of 25±2°C. The results showed that the gamma irradiation inhibited the growth and multiplication of shoots. Explants irradiated with high-dose gamma-ray (45-75 Gy) had not formed shoot in four weeks of culture, while 58.3-83.3% of the explants without irradiation or irradiated at low doses 15 and 30 Gy formed shoots. The higher irradiation doses increased percentage of browning explants and reduced the percentage of forming shoots. Within the eight weeks of culture, explant without irradiation was able to form shoots at the percentage of 100% with 24 shoots per explant, while explants irradiated at 15-45 Gy were able to grow form shoots at the percentage of 77.7-95.5%. The high doses-irradiated explants (60 and 75 Gy) were only able to form shoots less than 13-20%, with 2-3 shoots per explant. Keywords: Gamma rays (Gy), in vitro shoot, Pogostemon cablin Benth.
The Sensitivity of Leersia hexandra Sw. to Gamma-Ray Irradiation Pritha Kartika Sukmasari; Wahyu Widoretno; Dian Siswanto
The Journal of Experimental Life Science Vol. 11 No. 1 (2021)
Publisher : Postgraduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2021.011.01.02

Abstract

Gamma-ray irradiation as a physical mutagen has high penetrating power. Therefore, it is most often used to increase genetic variability or produce new mutant plants. This research was conducted to obtain the lethal dose of gamma-rays in Leersia hexandra plants. The used plant part was a single node stolon which had a length of 10 cm with the node in the middle of the stolon. The irradiation doses given were 0, 25, 50, 75, 100 Gy. Stolons were inserted into plastic clips and irradiated using a Cobalt-60 gamma irradiation source at the Center for Irradiation and Radioisotope Applications (PAIR), National Nuclear Energy Agency (BATAN) Jakarta. Gamma-irradiation has a significant effect on inhibiting shoot growth. The growth of irradiated Leersia hexandra with the best number of plants and the highest shoots was obtained at a dose of 25 Gy and decreased with increasing irradiation dose. The lethal dose (LD50) was determined eight days after irradiation using CurveExpert 1.4 software. Leersia hexandra plants that can sprout and regenerate followed the linear equation y = 1.02 - 7.5x with LD50 at 68.85 Gy and LD20 at 29.36 Gy.Keywords: gamma irradiation, genetic variation, Leersia hexandra, lethal dose, mutant plant.
Co-Authors Arbaul Fauziah Dian Siswanto Edi Priyo Utomo Pritha Kartika Sukmasari Serafinah Indriyani Yunia Efrice Banyo Efrice Banyo