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"UJI INFEKTIVITAS Scleroderma spp. PADA SEMAI Shoreaselarrica (DC.) Blume DAN Hopea odorata (Roxb.)ABSTRACT 1Infection test of Scleroderma geaster, Scleroderma sirmamariense, Sclerodermacolumnare and Scleroderma sp. to Shorea selanica seedlings has been studied undergreen house conditions. Those myconhizal lirngi, except Scleroderma sp. were alsotested to Hopea odorara seedlings. Root mycorrhizal percentage and formation ofmantel and Hartigfs net structures were investigated.The objective of the research was to find out the most infective Sclerodermamycorrhizal iimgi to Shorea selanica and Hopea odorara seedlings._ Root structural analysis of 3 months inoculated roots showed that there weremycorrhizal colonization in Shorea selanica and Hopea odoraia rooting system butmantel and I-Iartig?s net structures were not formed yet. These structures werecompletely fonned 4 months after inoculation. Root structure observation showed thatScleroderma spp. colonized and infected well the root system of Shorea selarzica andHopea odorara seedlings. The percentage of mycorrhizal roots was 13.75 % to 42.50 %for Shorea selanica seedlings and 14.17 % to 59.17 % for Hopea odorata. Hartig?s netstructures were formed in between two radially elongated epidermis cells.PENDAHULUANTanaman meranti (Dqoterocarpaceae) merupakan salah satu pohon hutan tropisyang mutlak rnembutuhkan mikoriza terutama pada tingkat semai (Yasman, 1997).Mikoriza adalah suatu asosiasi yang sepenuhnya simbiosis dan menghasilkan suatu sifatmorfologi yang baru dan konsisten dalam proses asosiasinya serta mendatangkankcuntungan untuk lcedua organisme tersebut (Harley & Smith, 1983). Sclerodermaspp. mempakan cendawan elctomikoriza yang sexing ditemukan berasosiasi dengan jenis-jenis tanaman dan famili Dipterocarpaceae, Pinaceae dan Gnetaceae. Sifat khusus dariektomikoriza adalah adanya struktur mantel yang terbcntuk dad jalinan hifa, yangmenetap pada permukaan akar dan Hartig-net yang terdapat di antara sel epidermis dan1"

"Shorea atau yang dikenal sebagai meranti merupakan genus utama famili dipterocarpaceae.Masyarakat banyak menggunakan tumbuhan ini sebagai bahan bangunan ...."

"tRNA UAA (trnL) intron have been widely utilised for phylogenetic reconstruction in angiosperm families. Two main helical elemnts of secondary structure of trnL intron (Stem loop regions P6 and P8) contained the most variable sequences across taxa...."

"Asian tropical forests are among the most diverse on the planet, a richness that belies the fact that they are dominated by a single tropical tree family, the Dipterocarpaceae. Many other families contribute to Asias natural diversity, but few compare to the dipterocarps in the number and variety of species that occupy the forest canopy. Understanding the ecology and dynamics of Asian forests is, to a very great extent, a study of the Dipterocarpaceae. This book synthesizes current knowledge on the dipterocarps. The family is explored through ecological, evolutionary, and biogeographic perspectives. The variety of dipterocarp forest formations in both the ever-wet and seasonal tropics is described, with due consideration given to the poorly known African and South American dipterocarp species. The considerable progress on the phylogeny and biogeography of the family is synthesized. A chapter on dipterocarp reproductive ecology, and particularly masting behaviour, reflects the considerable research interest attributed to this subject and its importance in shaping the ecology of Asian lowland rain forests in particular. Ecophysiological responses to light, water, and nutrients, which underlie mechanisms that maintain dipterocarp species richness, are addressed in separate chapters. At broader scales, dipterocarp responses to variation in soil, topography, climate, and natural disturbance regimes are explored from population and community perspectives in two additional chapters. The book concludes with a consideration of the economic values of dipterocarps and the recent and ongoing threats to dipterocarp forests. Looking to the future, a scientific foundation is required to capitalize on opportunities for conservation and restoration, and it is this to which this book aims to contribute."

"Data of Dipterocarpaceae species have been extracted from 8 studied plots of 1-ha each, distributed in three types of natural forest in Kalimantan (those were 4 plots in mixed dipterocarps forest, 2 plots in peat swamp forest and 2 plots in heath forest types ) for further population analysis...."