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All Journal Buletin Kebun Raya
Joko Ridho Witono
Pusat Konservasi Tumbuhan Kebun Raya Bogor, LIPI
Agriculture, Biological Sciences & Forestry

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ANATOMI DAUN PIPERACEAE DARI KAWASAN GUNUNG SLAMET, JAWA TENGAH Fatmawati Tihurua, Eka; Puji Astuti, Inggit; Ridho Witono, Joko
Buletin Kebun Raya Vol 14, No 2 (2011): Buletin Kebun Raya Vol. 14 (2) Juli 2011
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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Abstract

Leaf anatomy of Piperaceae from Gunung Slamet, Central Java has made with standard  paraffin and paradermal method. The results showed that Piperaceae has dorsiventral leaf, hypostomatatic or amphistomatatic, tetracytic and cyclocytic stomata type. Hypoderm tissue exist in upper and/or lower part of leaf, mesophyll was arranged by 1-2 layers of palisade and 2-7 layers of sponge tissue. There were 3 types of trichome i.e. glandular trichome which had globose cell with short stalk, bicellular glandular trichome and multicellular & uniseriate non-glandular trichome. The shape of the crystal of Piperaceae from gunung Slamet are sand, needle, drusse or prismatic which distributed in hypodermis, mesophyll and midrib. Piperaceae petiole was arranged by open or sometimes closed circle vascular bundles. These open vascular bundles were crescent shape or resemble to U and V shapes. 
ANATOMI DAUN PIPERACEAE DARI KAWASAN GUNUNG SLAMET, JAWA TENGAH Fatmawati Tihurua, Eka; Puji Astuti, Inggit; Ridho Witono, Joko
Buletin Kebun Raya Vol 14, No 2 (2011): Buletin Kebun Raya Vol. 14 (2) July 2011
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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Abstract

Leaf anatomy of Piperaceae from Gunung Slamet, Central Java has made with standard  paraffin and paradermal method. The results showed that Piperaceae has dorsiventral leaf, hypostomatatic or amphistomatatic, tetracytic and cyclocytic stomata type. Hypoderm tissue exist in upper and/or lower part of leaf, mesophyll was arranged by 1-2 layers of palisade and 2-7 layers of sponge tissue. There were 3 types of trichome i.e. glandular trichome which had globose cell with short stalk, bicellular glandular trichome and multicellular & uniseriate non-glandular trichome. The shape of the crystal of Piperaceae from gunung Slamet are sand, needle, drusse or prismatic which distributed in hypodermis, mesophyll and midrib. Piperaceae petiole was arranged by open or sometimes closed circle vascular bundles. These open vascular bundles were crescent shape or resemble to U and V shapes. 
RASIO SEKS JERNANG (Daemonorops draco (Willd.)Blume) PADA POPULASI ALAMI DAN BUDIDAYA: IMPLIKASI UNTUK PRODUKSI BIJI Asra, Revis; Syamsuardi, Syamsuardi; Mansyurdin, Mansyurdin; Ridho Witono, Joko
Buletin Kebun Raya Vol 15, No 1 (2012): Buletin Kebun Raya Vol. 15 (1) January 2012
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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Jernang (Daemonorops draco (Willd.) Blume) is a dioecious rattan species that produces resin on female individuals. The sex of jernang can only be identified from its inflorescences morphology. Sex survey was conducted in 5 populations of  jernang, 3 populations of which in the Bukit Tigapuluh National Park (BTNP), 1 population in the secondary forest in Jambi province and 1 population in the area of rubber plantation in Jambi province. Chi-Squared test on the sex ratio of  jernang showed that the ratio of the male to female in their natural habitat (Bengayoan and Tebo, 2 parts of the BTNP ecosystem and the Sepintun secondary forest) was distorted from the normal ratio of 1:1, while the cultivated jernang in Nunusan population (BTNPT) and Mandiangin were not significantly different from the normal sex ratio of 1:1. Female individuals from the cultivated population in the Mandiangin (planted in 1997) has an average number of stems per clump more on individual males (27.12) than females (26.92). The result of this study indicated that the D. draco has a good reproductive strategy and thus suitable for cultivation.
Co-Authors . Mansyurdin A.A. Ketut Agung Cahyawan W Eka Fatmawati Tihurua Inggit Puji Astuti Revis Asra