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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Journal of Tropical Crop Science Jurnal Jejaring Matematika dan Sains
Abdul Qadir
Department of Mechatronic Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science Mathematics Physics

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Reproductive success and compatibility among accessions of Jatropha curcas in Indonesia Palupi, Endah R.; Ahmad, Ade S.; Affandi, Rofiq; Qadir, Abdul; Randriani, Eni
Journal of Tropical Crop Science Vol 1 No 2 (2014): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (95.29 KB) | DOI: 10.29244/jtcs.1.2.11-17

Abstract

Large scale exploitation of Jatropha curcas for biofuelproduction is restrained by low productivity henceeconomically not protable. One of the main constraintsis due to limited number of female owers in aninorescence which eventually develop into fruits thatbear seed. Investigation on oral biology andreproductive potential of the species had been carriedout, but seems to vary among sites. The research wasconducted to study reproductive success and thecompatibility among Indonesian Jatropha accessions.The research was set up in two experiments. The rstexperiment was conducted at the Jatropha seedorchard, Pakuwon, Sukabumi, West Java from April toJuly 2007 using four-year- old trees of accessions fromLampung, Banten, West Java, and Central Java. Thesecond experiment was conducted at LeuwikopoExperimental Station of Bogor Agricultural Universityfrom April to July 2008 using one-year-old trees ofaccessions from Lampung, Bengkulu, Palembang, andKediri. Flowers were obtained from controlled self andcross-pollinated as well as left for open-pollination. Theresult showed that reproductive success varied amongaccessions; the greatest success was 0.73 obtainedfrom aWest Java accession and the least was 0.53 fromBanten accession. The Jatropha accessions werecategorized as partially self-incompatible as indicatedby index of self-incompatibility (ISI) that ranged 0.93-0.99. Banten accession produced highly viable andvigorous seeds regardless of pollination methods;accessions of Central Java produced higher viabilityseeds when cross-pollinated within accession, whereasthose from West Java and Lampung produced higherviability seeds when self-pollinated.Keywords: accessions, Jatropha curcas, selfpollination,self-incompatibility, seedviability
Soil Seed Bank of Two Karst Ecosystems in Bogor, Indonesia: Similarity with the Aboveground Vegeta-tion and Its Restoration Potential Putri, Winda Utami; Qayim, Ibnul; Qadir, Abdul
Journal of Tropical Life Science Vol 7, No 3 (2017)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.07.03.07

Abstract

Karst ecosystem in Bogor is currently threatened by mining activities. Restoration of the disturbed karst areas is urgently required. Seed banks are considered as an important potential seed sources for restoration. This study was conducted to quantify the composition and species diversity of the aboveground vegetation and the seed bank. The study determined the correspondence between the seed bank with the aboveground vegetation in relation with ecosystem restoration. Twenty 6 m × 6 m vegetation plots were established. A total of sixty soil samples were taken from the study sites. The seed bank was studied using germination experiment. All plant species in the vegetation plots and seedlings growing from all soil samples were identified and the number was counted to determine the composition, index of diversity, and index of similarity. There were 80 species from 41 families found in the seed bank in Mt. Nyungcung, dominated by Clidemia hirta (Melastomataceae), whereas 50 species from 29 families found in Mt. Kapur with Cecropia peltata (Urticaceae) dominated the site. Diversity index of Mt. Nyungcung and Mt. Kapur seed banks were 2.09 ± 0.21 and 1.78 ± 0.47 respectively. The similarity index between seed bank and the aboveground vegetation in the two study sites were 32.86% and 27.66% respectively. Mt. Nyungcung seed bank was more diverse than Mt. Kapur. The similarity between the seed bank with the aboveground vegetation in the two study sites were low. Further assessment is needed to determine the role of the seed bank of Mt. Nyungcung and Mt. Kapur in the restoration of the ecosystems.
Konservasi In Vitro Kantong Semar (Nepenthes rafflesiana Jack.) dengan Metode Slow Growth Previaningrum, Hanum; Qadir, Abdul; Isnaini, Yupi
Jurnal Jejaring Matematika dan Sains Vol. 3 No. 1 (2021): Vol. 3 No. 1 (2021): Edisi Juni 2021
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2021.v3.i1.502

Abstract

Nepenthes rafflesiana Jack. is one of a unique plant because there is the pitcher on the tips of the leaves to trap insects. This uniqueness makes N. rafflesiana mostly taken from its natural habitat for sale. Big Explored from nature caused extinction and ecosystem habitats damaged. Efforts to prevent extinction through ex situ conservation by in vitro culture of N. rafflesiana with slow growth method. This study aims were to determine the effect of paclobutrazol on the growth of N. rafflesiana and to obtain the most suitable concentration of paclobutrazole for in vitro conservation of N. rafflesiana. The research was conducted at the Tissue Culture Laboratory of the Research Center for Plant Conservation and Botanical Gardens from January to April 2020. The experiment was carried out in a Completely Randomized Group Design with a single factor, namely the concentration of paclobutrazol: 0, 1, 3 and 5 ppm. The results showed that the best concentration of paclobutrazol for in vitro conservation of N. rafflesiana was 5 ppm which could inhibit the growth of stem height and number of leaves and could maintain the green color of the leaves.
Co-Authors Affandi, Rofiq Ahmad, Ade S. Arzie, Donny Faiza Chairani Suwarno Fatmawati, Lia Irma IBNUL QAYIM Julyan, Benny Melasari, Nur Mohamad Rahmad Suhartanto Palupi, Endah R. Previaningrum, Hanum Randriani, Eni Saragih, Mutthiah Putri Supijatno, . Syarifa Mustika Tatiek Kartika Suharsi Winda Utami Putri Yupi Isnaini, Yupi