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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) BIOTROPIA - The Southeast Asian Journal of Tropical Biology Buletin Kebun Raya BERITA BIOLOGI Prosiding Seminar Nasional Pendidikan dan Agama

Kartika Ning Tyas

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Author-ID : 407105

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Immunology & microbiology Social Sciences Veterinary

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KONSERVASI PAMELO {Citrus maxima (Burm.) Merr.} DENGAN PENURUNAN KONSENTRASI MEDIUM DAN SUKROSA Tyas, Kartika Ning; Susanto, Slamet; Dewi, Iswari S; Khumaida, Nurul
Buletin Kebun Raya Vol 15, No 2 (2012): Buletin Kebun Raya Vol. 15 (2) July 2012
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar

Indonesia has high variety of pummelo [Citrus maxima (Burm.) Merr.], but only several cultivar are cultivated extensively. Others became vurnerable and theÂ germplasm has to be conserved to prevent their extinction. One of the conservation method is in vitro conservationÂ using a slow growth technique. Factorial experiment was used in designing the experiment, the first factor was MS medium concentration, i.e. 1/2MS and MS. The second factor was sucrose concentration, i.e. 0; 1; 2; and 3%. The results showed that low concentration of MS medium and sucrose reducing the leaf number and shoot length but increasing the root number and length.Â Based on inhibition of growth,Â the most reducing growth was planlet on MS without sucrose.

KERAGAMAN MORFOLOGI Hoya purpureofusca Hook.f. ASAL TAMAN NASIONAL GUNUNG GEDE PANGRANGO Rahayu, Sri; Tyas, Kartika Ning; Wawangningrum, Hary
BERITA BIOLOGI Vol 18, No 2 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Hoya purpureofusca Hook.f. (Apocynaceae: Asclepiadoideae) has been used as an ornamental plant and the international trade of this species has become increasing. This species has restricted distribution on the high elevation of Java and Bali mountains. This epiphyte climber has succulent leaves and umbellate delicate flowers. Flower has star shape, succulent and waxy, purple., c.1 cm in diameter. The observation on the morphological characteristic is aimed to select the best sample for ornamental plant. The total of 17 observed samples were obtained from three populations at Gunung Gede Pangrango National Park, West Java, Indonesia. The selection was based on the node length, size of the leaves, and flower number, size and color. The result showed that P01 from Cibodas could be developed as leaf ornamental plant, because its shortest node and small leaves. SP1 from Selabintana could be developed as flower ornamental plant, it has numerous, larger and deep purple flower. SP1 and P01 have the farest relatives distance among all observed accessions, but still have a similarity of 75%.

Adaptasi Tanaman Kedelai Terhadap Intensitas Cahaya Rendah : Karakter Daun untuk Efisiensi Penangkapan Cahaya La Muhuria; Kartika Ning Tyas; Nurul Khumaida; , Trikoesoemaningtyas; Didy Sopandie
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 34 No. 3 (2006): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

This research was conducted to identify some leaf characters related to light capture efficiency. It used split plot design with sub plot nested at the main plot. The main plot was light intensity consisted of two levels: I100 = light intensity 100% and I50 = light intensity 50%, while the sub plot was soybean genotype consisted of G1 = Pangrango, G2 = Ceneng, G3 = Godek, and G4 = Slamet. Leaf characters measured were : leaf total area, specific leaf area, trifoliate leaf area, leaf hairs (trichome) density, leaf thickness, length of palisade, chlorophylls content (chlorophyll a, b, and ratio a/b), and the greenness intensity. The result of research indicated that Ceneng has lower total leaf area, higher specific and trifoliate leaf area, less leaf hair density, thinner leaf, shorter palisade, higher greenness intensity, higher chlorophyll content (a and b), and also lower ratio chlorophyll a/b. Key words: Light capture efficiency, light intensity, tolerant genotype, sensitive genotype, soybean

THE PECULIAR PETIOLE CALLUSES GROWTH OF Amorphophallus titanum (Becc.) Becc. ex Arcang AND ITS IMPLICATIONS FOR Ex situ CONSERVATION EFFORTS Yuzammi Yuzammi; Kartika Ning Tyas; Tri Handayani
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 25 No. 1 (2018)
Publisher : SEAMEO BIOTROP

Amorphophallus titanum is a plant species endemic to Sumatera. Land degradation and illegal capture of hornbills (a distributor of A. titanum seeds) is leading to potential extinction of A. titanum in the wild. In order to conserve the species and save it from extinction, there is an urgent need to develop methods to propagate it both in situ and ex situ. The aim of this research was to discover environmental factors triggering callus growth from petiole cuttings of A. titanum in its natural habitat in Sumatera and to determine the viability of callus pieces as a propagation material. A completely randomized design with a single factor, i.e., callus size, was employed on five callus replicates. Each replicate consisted of four callus samples. The treatments consisted of three callus piece sizes i.e. 0.5 x.0.5 cm2, 1 x 1 cm2, 2 x 2 cm2. For each replicate, the following parameters of growth were assessed: the time of appearance of shoots; the shoot height when the first leaf fully opened; the petiole diameter; the diameter of the leaf lamina; and the number of young shoots. The results of our field observations showed that environmental factors such as temperature, humidity, and soil influence the formation of the callus in the wild. The size of the callus affected the shoot and root growth. The best result was obtained from callus 2 cmÂ², which could produce 2â€“3 shoots with an average height of 18.8 cm at the time of first fully opened leaf. The collection of Â petiole calluses of A. titanum that formed in its natural habitat are recommended instead of carrying the tuber.This ex vitro calluses can be used as propagation materials and then it could be planted in the botanic gardens as one of ex situ conservation effort.

Optimizing The Role Of The Community Against Drug Abuse as a Form Of Countermeasure In Realizing a Clean Village From Drugs Qothrun Nada Zahrotun Nabila; Amalia Farihal Husna; Rio Taqy Fadillah; Ashwa Cinta; Maulana Arie Saputra; Kartika Ning Tyas; Widi Cahya Adi
PROSIDING SEMINAR NASIONAL PENDIDIKAN DAN AGAMA Vol. 5 No. 1 (2024): PROSIDING SEMINAR NASIONAL PENDIDIKAN DAN AGAMA
Publisher : Sekolah Tinggi Pastoral Kateketik (STPKat) Santo Fransiskus Assisi Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/semnaspa.v5i1.2036

The rise of drug trafficking in Indonesia based on the results of BNN data processing still shows a high crime rate, which in the last 2023 reached 4,244,267 people exposed to drugs. Of course, drug crime is a problem that must be strictly prevented and supervised, because gen z is one of the targets of this crime. This is very necessary to be aware of, considering that gen z is the hope of the nation which will be able to advance, develop and educate the nation. The implementation and participation of the role of the community that is carried out optimally can be an effective step in trying to tackle drug abuse. Qualitative method is the method used by researchers. Through observation and literature study, it is possible to know factually about the level of understanding and behavior of the community with the holding of socialization supported by books and journals as research sources. This study aims to determine the role of the community against drug abuse in realizing a clean village from drugs.

Co-Authors Amalia Farihal Husna Ashwa Cinta Didy Sopandie Iswari S Dewi La Muhuria Maulana Arie Saputra Nurul Khumaida Qothrun Nada Zahrotun Nabila Rio Taqy Fadillah Slamet Susanto SRI RAHAYU Tri Handayani Trikoesoemaningtyas Wawangningrum, Hary Widi Cahya Adi Yuzammi Yuzammi

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