Judul: Analisis keragaman perbanyakan stek nenas (Ananas comosus (L.) Merrill) varietas queen
Abstrak: The different propagules (suckers, shoots, slips, crowns) have already been described. When an industry is just starting it may be necessary to maintain special nurseries for fast propagation. The stems are cut lengthwise and are sectioned. In principle each bud can grow out to a new plant, provided their nutrition is assured and the apical dominance is broken. The different group should be kept separate and must be sorted for size, so that a field is planted with uniform material. In order to develop rapid method for propagation of pineapple, the experiment that employ three factors, i.e. the section of stem used for propagation (upper-stem, middle-stem, lower stem), the number of vertical division (two and four), and growth regulator (BAP 0 mg/I and BAP 4 mg/l), conducted under green house condition at Pusat Kajian Buah-buahan Tropika (PKBT), Baranangsiang, Bogor, from December 2002 to October 2003, evaluated 'Nenas Bogor's stems, taken from Desa Tajur Halang. It was arranged in Completely Randomized Design (CRD) with three replications. The obtained data was subjected to analyze of variance homogeneity, analyze of variance, and analyze of correlation. The result indicated the using of the upper-stem and BAP 4 mg/l gave the highest number of planted materials and the fastest breaking of apical dominance. The using of two sectioned stem gave the highest number of planted materials and simultaneously gaye the best performance of planted materials. The experiment described that small variation was found within cuttings propagations' population. The variant is duplicated or triplicated plant.
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Judul: Studi perbanyakan in vitro tanaman nenas (Ananas comosus L. Merr.) dan analisis kestabilan genetik berdasarkan karakter morfologi, isozim dan RAPD
Abstrak: Upaya perbanyakan in vitro pada tanaman nenas dilakukan untuk mendapatkan bibit dalam jumlah banyak, seragam, dan cepat serta untuk mendukung program pemuliaan tanaman karena perbanyakan alami sangat lambat dan hanya menghasilkan sedikit bibit. Variasi somaklonal sering muncul pada perbanyakan in vitro tanaman pisang dan kelapa sawit. Evaluasi variasi somaklonal dengan mengkombinasikan beberapa karakter perlu dilakukan untuk menilai protokol regenerasi in vitro dan kestabilan genetik tanaman regeneran. Tujuan penelitian adalah: (1) mempelajari dan menganalisis pengaruh TDZ, IAA dan NAA terhadap multiplikasi, dan keseragaman keragaan di lapangan pada nenas kultivar Queen, (2) mempelajari dan menganalisis pengaruh BAP dan frekuensi subkultur terhadap multiplikasi, kualitas buah dan kestabilan genetik pada nenas kultivar Queen dan (3) mempelajari dan menganalisis pengaruh BAP dan TDZ serta teknik etiolasi terhadap multiplikasi pada nenas kultivar Smooth Cayenne.
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Judul: Integration of Islamic Stock Markets of OIC Countries Before and During the Russia-Ukraine War Crisis
Abstrak: Pasar saham yang terintegrasi memberikan dampak negatif seperti percepatan co-movement (pergerakan bersama) yang rentan terhadap guncangan ekonomi, maupun krisis pasar global ke pasar domestik. Salah satu krisis yang terjadi pada tahun 2022 adalah perang Rusia-Ukraina yang berdampak pada pasar saham, termasuk pada saham syariah yang dipercaya lebih tahan terhadap guncangan krisis global. Penelitian ini bertujuan untuk meneliti perkembangan, integrasi dan respon lima pasar saham syariah negara OKI pada perang Rusia-Ukraina. Metode yang digunakan adalah VAR/VECM pada indeks DJIMMT25, SPSADS, SPSUAEDS, JII, DJIMT, SPBMIR, dan SPBMIU. Hasil penelitian menunjukkan pergerakan yang sama pada pasar saham UAE dan Arab Saudi, sedangkan Turki mengalami tren positif selama perang. Pasar saham syariah negara OKI selama periode perang Rusia-Ukraina terkointegrasi, sementara pasar saham Malaysia memengaruhi pasar saham syariah empat negara OKI lainnya. Hasil IRF menunjukkan terdapat efek permanen pada volatilitas pasar saham syariah negara OKI akibat guncangan yang diberikan. Namun, respon volatilitas relatif kecil karena kontribusi guncangan lebih didominasi oleh pasar saham itu sendiri, An integrated stock market has negative impacts, such as accelerating co-movement, which is vulnerable to economic shocks and global market crises on the domestic market. One of the crises in 2022 was the Russia-Ukraine war which impacted the stock market, including Sharia stocks which were believed to be more resistant to the shocks of the global crisis. This study examines the development, integration, and response of OIC countries five Islamic stock markets in the Russia-Ukraine war. The method used is VAR/VECM on the DJIMMT25, SPSADS, SPSUUAEDS, JII, DJIMT, SPBMIR, and SPBMIU indices. The results show the same movement in the UAE and Saudi Arabia stock markets, while Turkey experienced a positive trend during the war. The Islamic stock market of the OIC countries during the Russia-Ukraine war was cointegrated. In contrast, the Malaysian stock market influenced the Islamic stock markets of the other four OIC countries. The IRF results show a permanent effect on the volatility of the Islamic stock market in OKI countries due to the shocks given. However, the volatility response is relatively small because the stock market itself dominates the contribution of shocks.
Keyword: co-movement, OIC, Rusia-Ukraine war, sharia stock market integration