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Sutiman Bambang Sumitro
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Berkala Penelitian Hayati
Published by Perhimpunan Biologi Indonesia Cabang Jawa Timur
ISSN : 08526834     EISSN : 2337389X     DOI : https://doi.org/10.23869/bphjbr
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology
Berkala Penelitian Hayati is a half yearly international peer reviewed, an open access life science journal. The journal was published by The East Java Biological Society and formerly used the Indonesian language. The first edition of this journal is Vol 1 No 1 in June 1995. It was accredited by Ministry of Culture and Education. It continues recorded by Zoological Record by Thomson Reuters Clarivate Analytics since 2011. Since April 2012, the journal was changed into English. This journal is indexed by DOAJ, Crossref, Google Scholar, Academia.edu, and EBSCO Host. This journal publishes original research, applied, review article, and educational articles in all areas of biology. Authors are encouraged to submit complete unpublished and original works that are not under review in other journals. This journal publishes original research, applied, review articles, and educational articles in all areas of biology. Authors are encouraged to submit complete unpublished and original works that are not under review in other journals. The journal scopes include, but are not limited to, the following topic areas including botany, zoology, ecology, microbiology, physiology, nanobiology, coastal biology, hydrobiology, neurobiology, genetics, developmental biology, biochemistry and molecular biology, biophysics, and life science.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 2 Documents
 1 
Search results for , issue "Vol 25 No 1 (2019): December 2019" : 2 Documents clear
Evaluation of Bacillus thuringiensis-based bioinsecticide impacts on arthropod biodiversity in the intercropping system Yulia Pujiastuti
JURNAL PENELITIAN BIOLOGI BERKALA PENELITIAN HAYATI Vol 25 No 1 (2019): December 2019
Publisher : The East Java Biological Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (320.34 KB) | DOI: 10.23869/17

Abstract

The intercropping system is intended to increase vegetable production. However, The presence of pests reducing production levels is a challenging constraint and should be controlled. In this study, Controlling insect pests will be evaluated by Bacillus thuringiensis-based bioinsecticide. The purpose of the research was to investigate the biodiversity of insect pests and their natural enemies in intercropping systems (cucumber and long beans), applied by B. thuringiensis-based bioinsecticide, chemical insecticide, and no-both application. Observation of existing insect-plant canopy was directly observed, and those on soil surface were observed by pitfall traps and yellow trays, as well. The research was performed in the experimental farm of the Sriwijaya University Faculty of Agriculture, Indralaya Campus, Ogan Ilir, South Sumatra, from July until October 2018. Results indicated three ecological roles of insects, namely predators/carnivores, pests/herbivores, and pollinators. Other insects and arthropods obtained from direct observation sampling method identified ten orders, but treatments of B. thuringiensis-based bioinsecticide resulted in 29 families of insects, chemical treatment was 17, and control (no treatment) was 32 families. B. thuringiensis-based bioinsecticides may be used in the intercropping system since it causes the highest biodiversity (H '= 2.96), high predator population (45%) and low pest population (41%) compared to other treatments.
Developmental the pattern of embryogenic microspore of rice (Oryza sativa L.) based on morphological characteristic Siti Nurbaiti; Yekti Asih Purwestri; Budi Setiadi Daryono; Endang Semiarti; Ari Indrianto
JURNAL PENELITIAN BIOLOGI BERKALA PENELITIAN HAYATI Vol 25 No 1 (2019): December 2019
Publisher : The East Java Biological Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (613.554 KB) | DOI: 10.23869/18

Abstract

Microspore culture is a rapid approach to get double haploid plants in shorten time which is important for plant breeding. Microspore culture of pigmented rice cultivar Segreng was used to observe the pattern of embryogenic development based on the characteristics of morphology. Characterization between embryogenic and non-embryogenic microspores was conducted after exposed anther to carbohydrate starvation in B medium culture at 33oC for 4 days. The result showed that enlarged microspore and star-like structure of fragmented cytoplasm become a marker of embryogenic microspore after stresses treatment. More complex of fragmented microspore was found at 4 days in A2 medium and developed further into multicellular structure. These multicellular structures might be originated either by symmetrical or asymmetrical division. The longer incubation, the higher frequency of complex fragmented microspore that developed into multicellular structure release from exine has appeared.

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