Judul: Fenologi dan Dinamika Kandungan Klorofil pada Pembungaan Dua Spesies Belimbing Hutan (Averrhoa dolichocarpa dan Averrhoa leucopetala).
Abstrak: Averrhoa dolichocarpa is a wild starfruit from Gorontalo and Averrhoa leucopetala from Papua. Both starfruits have unique characters of the leaves, infloresens, flowers, and fruit. The aims of the research were to determine the phenology of flowers and leaf chlorophyll content dynamics in flowering of two wild starfruits species Averrhoa dolichocarpa and Averrhoa leucopetala. The study was conducted in February 2012 to May 2012 by doing observations on the wild starfruits collections of Bogor Botanical Garden. Averrhoa dolichocarpa has infloresens initiation time (8-14) days, single flower’s small bud phase (11-15) days, large bud phase 1 day, anthesis 3 days and fruit development (40-45) days. Flower and fruit drop rate is quite high and the most influential environment factor is the wind speed. The chlorophyll content is very dynamic and influenced by the state of the location and the large of plant canopy. Averrhoa leucopetala has infloresens initiation time (30-34) days, small bud phase (12-15) days, large bud phase 1 day, anthesis 5 days, and fruit development (40-42) days. Flower and fruit drop rate is also quite high. Chlorophyll content is more static and tends to increase in the fruit development phase.
Keyword: 

Judul: Uji Viabilitas Polen pada Dua Spesies Belimbing Hutan (Averrhoa dolichocarpa dan A. leucopetala)
Abstrak: Wild starfruit Averrhoa dolichocarpa and A. leucopetala are new species reported. The aims of the research were to testing pollen viability at a day before anthesis (H-1) and at anthesis (H0) stadia with germination in Brewbaker and Kwack (BK) and 10% sucrose media and staining test with 1% anilin blue and 1% I2KI. The optimum time for germination was 16 hours. Pollen viability in staining test results were higher than in germination test ie. 64.80% in BK medium, 54.60% in sukrosa, 88.60% in aniline blue dye and 88.50% in I2KI. BK medium showed a better result for germination test than 10% sucrose. In vitro viability germination test obtained the result that pollen viability value of wild starfruit at H0 stadia was higher than pollen viability at H-1 stadia. While the result of staining test obtained that H-1 stadia was higher than at H0 stadia. Long filament of Averrhoa dolichocarpa located on the slope had higher pollen viability than short filament. Filament factor in staining test was not significant. Pollen viability both in 10% sucrose to 1% aniline dye and 10% sucrose to 1% I2KI were negatively correlated. The correlation of pollen viability was not found either in BK medium and aniline dye blue or in BK medium and I2KI.
Keyword: Bogor Agricultural University (IPB), staining test, in vitro germination, pollen viability, starfruit

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