PERANAN JAMUR RHIZOCTONIA SP. ASAL TAMAN NASIONAL RAWA AOPA WATUMOHAI SULAWESI TENGGARA TERHADAP KEBERHASILAN AKLIMATISASI DAN LAJU PERTUMBUHAN PLANLET ANGGREK MACAN (GRAMMATOPHYLLUM SCRIPTUM BL.)
ABSTRACT: The aim of this
research was to know the role of Rhizoctonia sp. fungus from Taman Nasional
Rawa Aopa Watumohai (TNRAW) to the successfully acclimatization and growth rate
of tiger orchid planlet (Grammatophyllum scriptum Bl.) as well to know
successfully infection of fungus Rhizoctonia sp. at the planlet root. The
procedure of this research consists 3 main steps, they were fungus inoculation
on orchid’s growing media, growth test and verification of successfully
infection on planlet root. Growth test consisting of 3 treatments namely
control (without nutrition and fungi) (K0); Rhizoctonia sp. application (R1);
Rhizoctonia sp. + nutrition Potato Dextrose Borth (PDB) (R2) with the
repetition for 8 times, then the growth data was analysed by statistics utilizes
to F-test and continue by BNT-test on 95% trusty level. The result of the
research showed that R2 treatment increase high planlet, leaf and root number.
All the mean score of research indicator R2 was highest compared R1 and K0. The
result of F-test showed R1 and R2 treatment gave significant influence toward
the high planlet, leaf and root number growth. Except, fresh and dry weight
planlet. Eventhough, fresh and dry weight was higher compared than K0
acclimatization period for a month.
Rhizoctonia sp. fungus infected planlet root through velamen to
eksodermis and cortex by forming hifa scroll (pelotons).
KEYWORDS: Rhizoctonia sp.,
tiger orchid (Grammatophyllum scriptum Bl.); planlet; acclimatization; peloton
Penulis: Rita Ningsih, Sri
Ambardini, Denofia Denofia
Kode Jurnal: jpbiologidd141018
