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Research ArticleOpen accessEvery word in the titleChanges in Leaf Characteristics with Tree Age in Dryobalanops beccarii Dyer in a Restored Forest of Sarawak, MalaysiaEmilla Yastari LAPOK, ONG Kian Huat, John Keen CHUBO, Patricia KING Jie HungStudy on leaf properties of an endangered dipterocarp tree species, Dryobalanops beccarii, was conducted in a restored forest. The study focused on the morphology, nutrient concentration and gas exchange in well-developed leaves of D. beccarii at different ontogenetic phases. The hypothesis tested that leaf physiological and morphological changes are related to the nutrient concentration level of D. beccarii leaves in … …OnLine Journal of Biological Sciences, Vol. 17, Issue 3 · 25 Sep 2017 · 7,542 accessesView PDFCite Research ArticleOpen accessEvery word in the titleDevelopment, Polymorphism and Cross-Species Transferability of Genomic SSR Markers in Duabanga Moluccana, an Indigenous Tree Species from SarawakKit-Siong Liew, Wei-Seng Ho, Shek-Ling Pang, Julaihi AbdullahIn this study, we used ISSR-suppression methods to develop a set of SSR markers for Duabanga moluccana. It is an indigenous fast growing tropical tree species. A total of 44 SSR regions were identified and specific primer pairs were designed. The SSR motifs contained perfect compound with 24 (54.5%) occurrences, followed by the imperfect compounds with 8 (18.2%), simple perfect … …OnLine Journal of Biological Sciences, Vol. 16, Issue 1 · 26 Jan 2016 · 7,784 accessesView PDFCite Research ArticleOpen accessEvery word in the titleEffect of Organic Based N Fertilizer on Dry Matter (Zea mays L.), Ammonium and Nitrate Recovery in an Acid Soil of Sarawak, MalaysiaSusilawati Kasim, Osumanu Haruna Ahmed, Nik Muhamad Ab. Majid et al.Problem statement: Exchangeable ammonium (NH4+) could be recovered by humic and fulvic acids from humic substances. The ability of these acids in fixing or retaining NH4+ has been demonstrated in many findings and reports. Both acids could affect the plant growth, nutrients uptake by enhancing photosynthesis rate and root growth among others. Thus, in this study, the effect of both … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 8,244 accessesView PDFCite