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Journal : Sainstek

Karakteristik Morfologi dan Genetik Tanaman Penghasil Gaharu (Aquilaria spp) Endemik Sumatera Barat Satria, Benni; Gustian, Gustian; Swasti, Etti; Kasim, Musliar; Darnetti, Darnetti
Sainstek Vol 11, No 1 (2008): Vol. XI No. 1, September 2008
Publisher : Lembaga Penelitian Universitas Negeri Padang

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Abstract

Agarwood (Aquilaria spp) is plant of tha important tropical forest trees,which produces a high economically valuable fragrant resinous wood. The objective of this  study was to characterize  the agarwood based on  morphologist are  genetic distance using RAPD markers. Characterizeof the agarwood based on morphologist and genetic distance by using RAPD markers is on alternative method to see variance morphologist,genetic and condition population plant agarwood (Aquilaria sp) endemic West Sumatra. This experiment was conducted at rain forest West Sumatraand  Laboratory Agronomy Agriculture faculty Andalas University, and Laboratory Biotecnology Seameo Biotrop Bogor, during mar 2006 toDecember 2007.The result showed two group mayor cluster to agarwood i.e. Aquilaria malacensis  and Aquilaria microcarpa endemic West Sumatra by using fenotipe variabilities and RAPD markers. Broad genetic variabilties were found for long and wide leaf width. Keyword : morfologist, genetic, Agarwood, and RAPD.
BIODIVERSITY OF ARBUSCULAR MYCHORRIZAL FUNGI (AMF) ON POTATOS RHIZOSPHERE AND IT POTENTIAL AS BIOFERTILIZER Yelianti, Upik; kasli, Kasli; Kasim, Musliar; Husin, Eti Farda
Sainstek Vol 12, No 1 (2009): Vol. XII No. 1, September 2009
Publisher : Lembaga Penelitian Universitas Negeri Padang

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Abstract

AMF as the biofertilizer on several crops  has been reported, but not so much the information about biodiversity of AMF on potatos rhizosphere and its potential to colonize that crop. The research about the biodiversity of AMF has been done in laboratorium  Biology in Faculty of Agriculture of Andalas University and in laboratorium Biotecnology of Agriculture Faculty of Jambi University from November 2004 till April 2005. The sample of soil have been collected from  rhizosphire of potatos plant in Alahan Panjang, West Sumatera, and then the AMF spore are isolated and identification based on morphology and size of spores. Inoculation of single and multi spores to potatos root to see the structure of colonization and percentage of colonization. The result of identification of AMF spores show that there are many kind of spores on rhizosphere of potatos plant and the spores are dominated by: Glomus, Acaulospora, Scutellospora, Gigaspora, and Enterophospora. Unfortunately, the inoculation of single spore has no good effect to the structure of colonization and the potatos plant not vigorous and easy to be severe of stem desease. But, inoculation with multi spores show that the tipe of colonization on potatos root have the coil hyphal and intracellular vesicular. The same result also indicated that colonization with active propagule (mycelium, spores, and infected root) have the coil hyphal and intracellular vesicular. The species of AMF that have the typical characteristic is assumed as Gigaspora sp.. Key words :    AMF, potatos rhizosphere, biofertilizer