Judul: Karakterisasi Morfologi dan Isozim Matoa (Pometia pinnata Forst.).
Abstrak: Variabilitas matoa di hutan alam maupun yang dibudidaya telah direvisi di bawah nama jenis tunggal Pometia pinnata Forst., dan subdivisinya diberi sinonim di bawah kategori forma, tetapi jarang digunakan karena terdapat beragam interpretasi terhadap variasi morfologinya yang cukup tinggi pada karakter, pola, bentuk dan ukuran serta warna pada bagian akar, batang dan daun. Varian matoa juga sukar dibedakan, maka dilakukan analisis isozim sistem enzim esterase, malatdehidrogenase dan peroksidse terhadap 19 aksesi matoa yang dipilih secara purposif dari Hutan Wisata Alam Gunung Meja Manokwari-Papua Barat, Kebun Raya Bogor, Taman Buah Mekarsari, Kebun Plasma Nutfah LIPI Cibinong, Arboretum IPB serta Balitbang. Kehutanan dan Konservasi Alam Bogor. Karakter morfologi dan isozim dicirikan dan diidentifikasi berdasarkan spesimen koleksi di Herbarium Manokwariense dan Herbarium Bogoriense. Enambelas karakter morfologi telah dianalisis menggunakan program NTSYSpc 2.02i, SAHN-Clustering untuk mendapatkan fenogram UPGMA
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Judul: Phenophysilogy Studies flowering and Fruit Development of Matoa (Pometia pinnata)
Abstrak: Matoa (Pometia pinnata) merupakan salah satu tanaman buah yang belum dimanfaatkan secara luas di Indonesia. Matoa dapat tumbuh lebih dari 30 meter dan dapat ditemukan didaerah dataran rendah subtropis dan tropis wilayah Asia Pasifik. Penelitian telah menunjukkan manfaat matoa sebagai buah segar, bahan manufaktur serta mengandung bahan antioksidan, antimikroba dan antivirus. Penelitian dasar seperti studi fenologi dibutuhkan untuk memperoleh informasi pembungaan dan mutu buah yang dapat mendukung budidaya, perbanyakan dan keragaman pemanfaatan matoa. Pengamatan deskriptif dilaksanakan di Taman Buah Mekarsari Cileungsi Bogor. Inisiasi pembungaan terjadi pada akhir bulan Juni ketika intensitas curah hujan mengalami penurunan dan bunga matoa mekar pada bulan September. Malai bunga matoa dapat tumbuh 8 sampai 30 cm dengan 4 sampai 16 anak malai membentuk susunan bunga monopodial inflorescence. Waktu pembungaan tahap inisiasi sampai bunga mekar berlangsung sekitar 56 hari dan bakal buah terbentuk sekitar 9 sampai 12 hari setelah mekar. Perkembangan buah mulai bunga mekar sampai buah matang berlangsung sekitar 12 minggu dengan fruitset sekitar 2,5%. Kata kunci: pembungaan, perkembangan buah, fenofisiologi, Pometia pinnata, Matoa (Pometia pinnata) is one of the underutilized fruit in Indonesia which can growth up to 30 m and can be found naturally mainly in lowland subtropical and tropical areas in the Asia-Pacific region. Some research has been revealed that matoa plant usefull as fresh fruit, manufactur products and contains many functional compound as well as antioxidant, antimikroba and antivirus. Basic research as phenology studies is needed to obtain information on flowering and fruit quality to support the cultivation, breeding and diversification of matoa. Descriptive observation of flowering and fruit development of matoa was carried out at the Mekarsari Fruit Garden in Cileungsi Bogor. Generative initiation starts at the last June when the intensity of rainfall decreases and flowers bloom in September. Matoa panicle flower can growth 8 to 30 cm and 4 to 16 of flower branch and cluster of flowers arranged as a monopodial inflorescence. The periode from the emergence of generative buds to blooming lasts an average of 56 days after initiation and ovaries are formed for 9 to 12 days after anthesis. Fruit development from anthesis to maturity an averaged of 12 weeks after blooming, with an average fruitset of 2,51%.
Keyword: flowering, fruit development, phenofisiology, Pometia pinnata

Judul: A Continuous Vaccination Strategy in the SVIR Epidemic Model
Abstrak: Vaccination is conducted to minimize the spread of a disease. The vaccination is usually done several times within a fixed time interval. In the SVIR model, it is assumed that individuals do not get immediate immunity following a vaccination program. So according to process of vaccination on SVIR model, there are two strategies, i.e. the continuous vaccination strategy (CVS) and the pulse vaccination strategy (PVS). In this study, only the CVS strategy in epidemic model SVIR is considered. Results of the study indicate that dynamics of the CVS system depends on the basic reproductive number. If the basic reproductive number is less than one, then the disease-free fixed point is asymptotically stable. It means that the disease will eventually disappear from the population. Conversely, if the basic reproductive number is greater than one, then the endemic fixed point is asymptotically stable, which means that the disease will remain exist in the population. Simulation result shows that the vaccination would minimize the spread of disease by reducing the basic reproductive number. If the time for the vaccinated recipients to obtain the immunity, as well as a possibility of vaccinated recipients to be infected are neglected, then the disease will be eradicated. This condition is called an over-evaluating effect of vaccination.
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