Volume 30 No. 2 July – December 2008

Pamela M. Po-Abit ABSTRACT Mt. Pangasugan which lies up to an elevation of 1,158 m ASL on the western slope of the Central Cordillera of Leyte is one of the unexplored mountains. Since directory of Philippine flora is still incomplete, a floristic inventory of the country’s remaining forest is imperative. The study was conducted to …

Research Note: Floristic inventory of monocots in Mt. Pangasugan, Baybay, Leyte, Philippines Read More »

Marilyn M. Belarmino and Jocelyn R. Gonzales ABSTRACT The influence of root trainer cell volume and seedling density, and composition of growing media was examined in relation to morphological, biomass and seedling quality parameters of four-month old planting stock of three tropical broadleaved tree species viz., Acacia catechu, Azadiractha indica and Pongamia pinnata. The study …

Growing tropical tree planting stock in root trainers: Cell volume, seedling density and growing media Read More »

Paulo N. Pasicolan1 and Damasa M. Macandog2 ABSTRACT A strong belief by Clavaria farmers that there is ‘gold in Gmelina growing’ turned out to be a huge frustration among tree out growers in southern Philippines in the late 1990s. The lack of a market study and appropriate government support system to address farmers’ tree growing …

Gmelina Boom, Farmers’ Doom: Tree growers’ risks, coping strategies and options Read More »

Marilyn M. Belarmino and Jocelyn R. Gonzales ABSTRACT A study was conducted to establish a reliable procedure for somatic embryogenesis and plant regeneration from callus cultures of purple food yam (Dioscorea alata L.). The procedure involved three steps; (1) culture of nodal stem segments from greenhouse-grown plants to generate in vitro plantlets; (2) induction of …

Somatic embryogenesis and plant regeneration in purple food yam (Dioscorea alata L.) Read More »

Lucia M. Borines1, Emilie O. Espejo1, Robelyn T. Piamonte1, Casiana M. Vera Cruz2 and Edilberto Redoña2 ABSTRACT This study was conducted to: 1) evaluate the reaction of Mestizo hybrids, their maintainer and restorer lines to Philippine Xanthomonas oryzae pv. Oryzae races, 2) incorporate bacterial blight resistance genes to these lines via marker-aided backcrossing and 3) …

Development of bacterial blight resistant Mestizo hybrid maintainer and restorer lines through marker-aided backcrossing Read More »