18 research outputs found
PERANAN KEMAMPUAN MEMBACA TERHADAP KEMAMPUAN BERBICARA SISWA KELAS V MI ATTAUFIQ MEGAMENDUNG BOGOR TAHUN PELAJARAN 2011/2012
No full textKultur Apeks untuk Penyediaan Bibit Unggul Tebu Varietas PS864 dan PS881
No full text<p>In vitro culture<br />techniques have become alternative to help overcome the<br />problems those are often encountered in the provision of<br />seeds through conventional means. Micropropagation<br />through apex culture in sugarcane has several advantages,<br />such as the produced plants have higher genetic stability,<br />high multiplication rate, and more healthy seeds (especially<br />virus-free)., The aims of the the research were to produce<br />seeds of two varieties of sugarcane, namely PS864 and<br />PS881, through apex culture. Laboratory-scale research was<br />conducted at the Indonesian Center for Agricultural<br />Biotechnology and Genetic Resources Research and<br />Development (ICABIOGRAD), Bogor, while sowing seeds<br />nursery was done in the Experimental Station of Gowa,<br />South Sulawesi Assessment Institute for Agricultural<br />Technology. The experiments consisted of initiation and<br />regeneration of apexes, shoots multiplication, rooting<br />induction, and acclimatization of plantlets. Research results<br />showed the initiation and regeneration of PS864 and PS881<br />through apex culture could be done on MS basic medium<br />containing 0.5 mg/l BAP. Shoot proliferation of both varieties<br />increased in the second subculture. Addition of 1 mg/l BAP<br />into medium in the second subculture resulted in higher<br />average number of shoots than that of 5 mg/l BAP, both for<br />PS864 and PS881. Addition of 1 mg/l and 5 mg/l kinetin<br />showed no significant differences for shoot numbers<br />compared to that of PS864 in medium containing 1 mg/l<br />BAP. The average number of PS881 shoots in multiplication<br />media containing 5 mg/l kinetin was higher than that of 1<br />mg/l kinetin. Increased concentrations of NAA and IBA from<br />0.1 mg/l to 0.5 mg/l in the MS medium were correlated to the<br />increased number of roots in PS864 shoots. Meanwhile, only<br />increased concentration of NAA that affected rooting percentage<br />of PS881. Acclimatization showed the percentage of<br />the plantlets grown in polybags was higher than that directly<br />grown in planting bed. The primary seeds (G0) produced in<br />these experiments were ready to be reproduced again to<br />obtain further stages.</p></jats:p
Penggunaan Aksis Jantung Pisang untuk Penyediaan Sumber Eksplan Bebas Bakteri
No full text<p>The sterile culture is very important in cryopreservation works. Bacterial-free explant sources are difficult to obtain during in<br />vitro culture of banana. Floral bud is expected as bacterial-free explant sources because the organ emerges above the ground<br />and protected by bracts. The purposes of this study are to obtain optimal concentration of BA to regenerate male bud floral<br />axis explants of Barangan variety and to prove that cultures derived from these explants were free from bacterial<br />contamination. Two-millimeter pieces of male bud floral axis of Barangan variety were planted on MS medium containing of 1<br />μM IAA, 200 g/l CH, and 2% sucrose. Experiment was arranged in Completely Randomized Design with the treatment of BA (5,<br />10, 15, 20, and 25 μM) in 10 replications. Subculture was conducted by using MS media containing of 10 μM BA and 1 μM IAA.<br />The variable observed were percentage of browning, number of nodules, number of shoots, number of normal shoots,<br />number of abnormal shoots, and number of nonsurvived shoots. The screening towards bacterial contamination was<br />conducted by using medium containing of 10 g/l trypton, 10 g/l glucose, and 5 g/l yeast extract. The results showed that the<br />explants could regenerate into shoots. The 25 μM BA was the best treatment because it could produce the highest number of<br />total and normal shoots, i.e. 9.2 shoots/explant and 6 shoots/explant, respectively. All of the shoots regenerated from male bud<br />floral axis were 100% free from bacterial contamination, whereas all of the shoots regenerated from suckers were<br />contaminated by bacteria.</p></jats:p
Multiplikasi Tunas Belimbing Dewi (Averrhoa carambola) melalui Kultur In Vitro
No full text<p>Star fruit (Averrhoa carambola) is one of tropical fruits which had a high content of vitamin C, which was higher than that in apple and grape. As fresh consumption, star fruit had a good role in decreasing human blood pressure. Main constraints of star fruit development weather for conservation purpose and or for cultivation were still limited due to lack of seedlings availability. In vitro culture technique was one of the altrnative technologies capable of producing seedlings in a large quantity, uniform growth and relatively in a short period. One of the important keys in micropropagation work was the step of shoot initiation and multiplication. In this study we used two kind of explant, namely shoot with single node and shoot from germinated embrio. Experiment I, shoot with single node and shoot from germinated embrio were planted at WPM media + citric acid 100 mg/l. The next activities was focused on single node shoots which was subcultured at WPM + BAP 0.5 mg/l. In experiment II in vitro shoots from previous experiment was subcultured at WPM + BA (1 and 2 mg/l) + thidiazuron (0.1 and 0.2 mg/l). To stimulate shoot multiplication rate, shoot was subcultured at WPM or MS media in combination with IAA 0.5 mg/l and zeatin 2 mg/l. To improve vigourity of the plant, in vitro shoots resulted from multiplication media was planted at WPM or MS media containing paclobutrazol (0.4 and 0.8 mg/l) + BA 2 mg/l + thidiazuron 0.2 mg/l. Result showed that the use of single node shoot as an explant better than shoot comes from germinated embrio. Sub culture of star fruit shoot on WPM basal media containing BAP of 0.5 mg/l produce the shoot number about 4, and the shoot number could be increased until 18 by using IAA 0.5 mg and zeatin 2 mg/l. The treatment of schock temperature at 4-5oC during 4 days before planting could fasten shoot initiation time from 3 months to 1 months. An addition of 0.4 mg/l paclobutrazol on MS or WPM media containing 2 mg/l BA and 0.2 mg/l thidiazuron could improve vigourity of plantlet.</p><p> </p><p><strong>Abstrak</strong></p><p>Belimbing (Averrhoa carambola) merupakan tanaman buah tropik yang mengandung vitamin C lebih tinggi daripada apel dan anggur. Buah belimbing segar sangat berguna untuk menurunkan tekanan darah. Pengembangan tanaman ini untuk keperluan budi daya ataupun untuk tujuan konservasi masih belum optimal karena terbatasnya bibit. Teknik kultur jaringan merupakan alternatif teknologi yang mampu menyediakan bibit secara massal, seragam, dan relatif cepat. Salah satu tahap yang harus ditempuh dalam perbanyakan bibit melalui kultur jaringan adalah multiplikasi tunas yang menjadi kunci dalam keberhasilan teknik perbanyakan ini. Percobaan terdiri atas beberapa kegiatan menggunakan dua jenis eksplan, yaitu tunas dengan nodus tunggal dan tunas dari perkecambahan embrio. Pada percobaan I eksplan tunas dengan nodus tunggal ditanam pada media WPM + asam sitrat 100 mg/l kemudian disubkultur pada media WPM + BAP 0,5 mg/l. Pada percobaan II, tunas in vitro disubkultur kembali pada media WPM + BA (1 dan 2 mg/l) + thidiazuron 0,1 dan 0,2 mg/l). Untuk lebih memacu tingkat pertunasan dilakukan subkultur kembali pada media WPM atau MS yang ditambah dengan IAA 0,5 mg/l dan zeatin 2 mg/l. Untuk meningkatkan ketegaran, tunas hasil multiplikasi ditanam pada media WPM atau MS + BA 2 mg/l + thidiazuron 0,2 mg/l dan paclobutrazol (0; 0,4; dan 0,8 mg/l). Hasil penelitian menunjukkan bahwa penggunaan eksplan tunas dengan nodus tunggal lebih baik dibandingkan dengan tunas yang berasal dari perkecambahan embrio. Subkultur yang dilakukan pada media WPM yang mengandung 0,5 mg/l BAP dapat menginisiasi dan menghasilkan rata-rata empat tunas. Subkultur tunas belimbing pada media MS + IAA 0,5 mg/l + zeatin 2 mg/l dapat memacu pembentukan tunas yang banyak, mencapai 18 buah. Penambahan paclobutrazol 0,4 mg/l ke dalam media MS atau WPM yang telah mengandung BA 2 mg/l dan thidiazuron 0,2 mg/l dapat memperbaiki ketegaran biakan.</p><p><strong><br /></strong></p></jats:p
The Role of Teachers in Teaching Sexual Education for Primary School Students
No full textTeachers in primary school have role as second parents at school by teaching and guiding students to prepare them for real life in the community. Primary school students, in the age range 6-12 years, are prepared for further development in adolescence or puberty. At that age, both male and female students are exposed to various sexual problems. Therefore, it is important to provide sexual education for primary school students. Unfortunately, schools only teach the function of reproductive organs. Teachers do not explain the dangers of sexual deviance and important values ​​of sexual education. Often teachers are very awkward when they teach something related to sex. It makes children curious and will find out more about sex by themselves. They look for it on the internet where there are a lot of inappropriate content for primary school students. The lack of sex education needs to be improved so that cases of adolescents who have premarital sex, people who are pregnant out of wedlock and other sexual deviations may be reduced in the future. Therefore, teachers are expected to play a big role in accompanying the growth and sexual development of students. This paper contains thoughts and ideas of the author in maximizing the role of teachers in teaching sexual education for primary school students
Social Capital and Self Efficacy of Pregnant Women
No full textBackground: Mental health disorders, namely anxiety and depressive symptoms, are common in pregnant women due to physical and hormonal changes. Social support, family environment conditions and the neighboring social environment are components of social capital that contribute to the health of pregnant women. The Indonesia Healthy Family-Program Approach (HIP-FA) supports efforts to empower families to provide social support to pregnant women, thereby increasing self-efficacy in pregnancy that will lead to giving birth to healthy babies. This paper aims to describe the social capital and efficacy of pregnant women. Method: This study was a qualitative study that described social capital, empowerment, and self-efficacy of pregnant women during pregnancy. The article search was through PubMed, ProQuest, and Google Scholar databases. The keywords used to search the articles included: pregnant women, self-efficacy, social capital, and empowerment. The author examined and synthesized various kinds of literature that were closely related to social capital in providing self-efficacy for pregnant women. Results: Social capital affects health and is the main determinant of health. The important social capital is social support for pregnant women by empowering families to give better attention during pregnancy. A healthy Indonesian program with a family approach (HIP-FA) is organized in order to increase the government's attention in overcoming health problems by involving family directly in planning activities, monitoring and evaluation processes, so that the families understand well the health problems of pregnant women in their families and can provide social support in dealing with mental health disorders of pregnant women and increasing self-confidence to be mothers and parent. Conclusion: Social support is a social capital that can improve family empowerment by paying more attention to the health of pregnant women. Social capital in the form of family cohesion and family environment can improve the self-efficacy of pregnant women and prevent pregnancy complications to prepare for the birth of a healthy baby
Kultur Apeks Untuk Penyediaan Bibit Unggul Tebu Varietas PS864 Dan PS881
No full textIn vitro culturetechniques have become alternative to help overcome theproblems those are often encountered in the provision ofseeds through conventional means. Micropropagationthrough apex culture in sugarcane has several advantages,such as the produced plants have higher genetic stability,high multiplication rate, and more healthy seeds (especiallyvirus-free)., The aims of the the research were to produceseeds of two varieties of sugarcane, namely PS864 andPS881, through apex culture. Laboratory-scale research wasconducted at the Indonesian Center for AgriculturalBiotechnology and Genetic Resources Research andDevelopment (ICABIOGRAD), Bogor, while sowing seedsnursery was done in the Experimental Station of Gowa,South Sulawesi Assessment Institute for AgriculturalTechnology. The experiments consisted of initiation andregeneration of apexes, shoots multiplication, rootinginduction, and acclimatization of plantlets. Research resultsshowed the initiation and regeneration of PS864 and PS881through apex culture could be done on MS basic mediumcontaining 0.5 mg/l BAP. Shoot proliferation of both varietiesincreased in the second subculture. Addition of 1 mg/l BAPinto medium in the second subculture resulted in higheraverage number of shoots than that of 5 mg/l BAP, both forPS864 and PS881. Addition of 1 mg/l and 5 mg/l kinetinshowed no significant differences for shoot numberscompared to that of PS864 in medium containing 1 mg/lBAP. The average number of PS881 shoots in multiplicationmedia containing 5 mg/l kinetin was higher than that of 1mg/l kinetin. Increased concentrations of NAA and IBA from0.1 mg/l to 0.5 mg/l in the MS medium were correlated to theincreased number of roots in PS864 shoots. Meanwhile, onlyincreased concentration of NAA that affected rooting percentageof PS881. Acclimatization showed the percentage ofthe plantlets grown in polybags was higher than that directlygrown in planting bed. The primary seeds (G0) produced inthese experiments were ready to be reproduced again toobtain further stages
Writing Ability with Metaphorming Approach: A Systematic Review
No full textMetaphorming is a new way of brainstorming that covers all aspects and complexity of students’ creative thinking skills. This approach enhances fast-thinking ability and creativity, allowing them to connect something that is known with a new one for better problem-solving. The purpose of this study was to conduct a systematic review on how to improve students’ writing skills through a metaphorming approach. The methodology used was the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA). Furthermore, the writing skills were examined using a metaphorming approach from 5 databases with several articles, including 143, 58, 4, 198, and 23 from Microsoft Academic, Scopus, JSTOR, crossref, and EBSCO, respectively. This study’s results analyzed 11 focus studies related to metaphorming effects. The study strategy was developed by formulating the problem, combining descriptors and keywords, and the year of publication. To choose the correct studies for review, three independent reviewers carried out abstract and full-text selection and research analysis. In this regard, 426 articles were obtained, though only 43 were selected for review. The results showed that mapping the metaphorming approach could improve writing skills. Therefore, this study provides valuable information about the metaphorming approach for better writing skills and can also be used to examine learning and teaching materials development
The Development of Short Story Writing Teaching Materials to Improve Student's Writing Skills: A Metaphorming Approach
No full textInnovative teaching materials for short story writing are required to enhance students' writing skills. This study proposes the use of the metaphorming approach in developing teaching material for short story writing. This study is a Research and Development (R&D) which used the ADDIE model that consists of five stages, including analysis, design, development, implementation, and evaluation. Data was collected through interviews, tests, questionnaires, and observations at the junior high school level. The design of the teaching materials was integrated with metaphorming principles. Furthermore, the validation process of the design involved experts in metaphorming, instructional design, and linguistics. The validation included three aspects, content, layout, and language. At the implementation stage, teaching material was implemented in the learning to examine its effectiveness in enhancing students' writing skills. A statistical test was carried out to investigate the significance of increasing students' writing skills. The ADDIE model was evaluated at the final stage and at each stage to ensure the quality of development. The results showed that the teaching material for short story writing with a metaphorming approach had met the validity and reliability criteria. Furthermore, its implementation in learning improves students' writing skills significantly
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