Sri Pudyastuti
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EFEKTIVITAS ZPT 2,4 D PADA MEDIUM MS DAN LAMA PENCAHAYAAN UNTUK MENGINDUKSI KALUS DARI KOTILEDON KEDELAI Pudyastuti, Sri; Habibah, Noor Aini; -, Sumadi
Biosaintifika: Journal of Biology & Biology Education Vol 4, No 1 (2012): March 2012
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v4i1.2267

Abstract

Dalam upaya menghasilkan kedelai yang tahan terhadap hama penyakit, dan cekaman, maka dilakukan pemuliaan dengan kultur jaringan, melalui kalus. Penggunaan kalus sebagai tahap penelitian selanjutnya yaitu induksi variasi somaklonal atau transformasi genetik. Penelitian ini bertujuan mengetahui kondisi cahaya, konsentrasi 2,4 D optimal dalam setiap kombinasi perlakuan. Penelitian menggunakan Rancangan Acak Kelompok yang terdiri dari 2 faktor. Konsentrasi 2,4-D dan keadaan cahaya. Konsentrasi 2,4-D terdiri dari 4 taraf (0 ppm; 3 ppm; 6 ppm; dan 9 ppm;) dan 2 taraf lama pencahayaan (24 dan 0 jam). Variabel yang diamati adalah waktu muncul kalus, persentase tumbuh kalus dan berat kalus. Hasil penelitian menunjukan konsentrasi 2,4 D merupakan faktor yang mempengaruhi induksi kalus, interaksi 2,4 D dan kondisi pencahayaan tidak berpengaruh terhadap pembentukan kalus. Interaksi 2,4 D dan kondisi pencahayaan tidak ada yang efektif untuk menginduksi kalus. Berdasarkan uji Duncan dihasilkan konsentrasi 2,4-D yang paling optimal adalah 9 ppm. In an effort to produce soybean that are resistant to pests and diseases and stress, the breeding was done by tissue culture, through callus. The use of callus is the further step in the research phases of somaclonal induction or genetic transformation. This study aimed to determine the condition of light, the optimal concentration of 2,4 D in any combinations of treatment. The research was using randomized block design consisting of two factors: the concentration of 2,4 D and the light. There was 4 levels of 2,4 D concentration (0 ppm; 3 ppm; 6 ppm; 9 ppm), and 2 levels of light exposure (24 and 0 hours). The observed variable was the time of the callus emerged, the percentage of the callus growth and the weight of the callus. The result showed that the concentration of 2,4 D was the factor affecting callus induction, whereas 2,4D and the interaction of light condition was not effective to induce callus. Based on Duncan test, the optimum concentration of 2,4 D was 9 ppm.
Inflammatory Marker and their Association with COVID-19 Severity in Pregnant Women Lisnawati, Yuyun; Purnadiputra, Akbar; Widyakusuma, Lucky Savitry; Pudyastuti, Sri; Sari, Amanda Mustika
Indonesian Journal of Obstetrics and Gynecology Volume 14. No. 1 January 2026
Publisher : Indonesian Socety of Obstetrics and Gynecology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32771/inajog.v14i1.2686

Abstract

Abstract : Objective: To analyze the correlation between blood markers; C-Reactive Protein (CRP), D-Dimer, Neutrophil-to-Lymphocyte Ratio (NLR) and the severity of COVID-19 in pregnant women during the 2020 pandemic at Persahabatan Hospital, Jakarta. Method :This cross-sectional study was conducted at Persahabatan Hospital, a National Respiratory Referral Center in Jakarta. A total of 525 pregnant women with confirmed COVID-19 who met the inclusion criteria were included in the study. Laboratory markers, including CRP, D-Dimer, and NLR, were analyzed and categorized as normal or elevated. Data were analyzed using the Chi-square test, and correlations were evaluated using Spearman’s rank correlation coefficient. Result :The results showed that elevated biomarkers were significantly correlated with increased disease severity. CRP (>10 mg/L), D-Dimer (>3333 mg/L), and NLR (?5.8) were all associated with moderate to severe disease. All biomarkers demonstrated a significant correlation with disease severity (p < 0.005). Conclusion: Elevated CRP, D-Dimer, and NLR levels are associated with increased disease severity in pregnant women with COVID-19, suggesting their potential role as practical indicators for disease severity assessment. Keywords : Covid 19, CRP, D-Dimer, NLR, Pregnant.