Fui Ying Tsan - Academia.edu (original) (raw)

Papers by Fui Ying Tsan

Journal of Tropical Plant Physiology

To plant Syzygium myrtifolium Walp. on harsh urban sites, planting materials of seed origin havin... more To plant Syzygium myrtifolium Walp. on harsh urban sites, planting materials of seed origin having better developed tap roots are preferred compared to those propagated from stem cuttings. However, fully ripe fruits at 8 weeks after fruit set are heavily lost to birds. In the current study, the unpalatable semi-ripe fruits at 7 weeks were found suitable for propagation. The seeds from the semi-ripe fruits showed mean germination rate of 93% and developed normal seedlings within 1 week, although continued growth with increases in size and fresh weight (FW) in the fruits and seeds was significant towards completion of fruit ripening. Thus, harvesting of fruits within the short period between these two fruit developmental phases is critical in the seed procurement process of this plant species. At the semi-ripe stage, pericarp exhibiting mixture of red and black colour can be a practical guide to indicate the suitable time for harvesting the fruits. Nonetheless, subsequent desiccation ...

Malaysian Applied Biology, Apr 3, 2023

Intact Syzygium myrtifolium seed produces a single seedling although most species within the same... more Intact Syzygium myrtifolium seed produces a single seedling although most species within the same genus are polyembryonic. Following the earlier work that found the potential of more than one plantlet development from the fractionated seeds of some monoembryonic Eugenia spp. belonging to the same family, the present work assessed the sprouting of S. myrtifolium seed fractions on moistened paper towel pads. This study was carried out in the enclosed plastic boxes at ambient temperature in the laboratory. The results obtained indicated that the different parts of the cotyledons could develop plantlets spontaneously following incision of a seed into separated fractions. Despite the reduced mass, the seed fragments revealed the potential of developing more than one plantlet in vivo from a seed. Injury or seed incision has been suggested to trigger the development of embryonic cell in the cotyledon leading to the formation of an entire plant in contrast to polarity committed by whole seed. For the fragmented seeds that did not regenerate full plants, more than 80% of them exhibited unsynchronized adventitious root development. In the re-growth evaluation, more than 70% of the seed fragments formed new adventitious roots on the new cotyledonary surfaces after the removal of plantlets and the attached cotyledons. This phenomenon suggests the spread of meristematic tissues within the cotyledons. Future work should look into the intrinsic signals and external cues that regulate the cellular differentiation and development in the seed fractions in revealing the polyembryony in S. myrtifolium.

Plant Regeneration from Seeds

international food research journal, 2018

Functional property changes in Phaleria macrocarpa fruit during ripening on tree were studied. Re... more Functional property changes in Phaleria macrocarpa fruit during ripening on tree were studied. Results showed that juice extracted from fruit flesh had low acidity and soluble solid content. Fruit acidity decreased but soluble solids increased as the fruit ripened. In terms of antioxidant content, ascorbic acid, DPPH free radical scavenging activities and total phenolic content were, however, the lowest in fully ripe fruit flesh while the unripe fruit flesh had the highest. High percentage of these antioxidants was water soluble. This study suggests that the unripe fruits should be harvested for valuable medicinal product development instead of the fully ripe fruits.

The Zingiberaceae family has many underuntilised ginger species with great potential to be introd... more The Zingiberaceae family has many underuntilised ginger species with great potential to be introduced as ornamental and hortucultural plants. One of them is Etlingera elatior or more commonly known as bunga kantan or 'Torch ginger'. Preliminary studies conducted at Louisiana State University indicated that the application of triazoles inhibited the vegetative growth but increase the flowering of other ginger species, i.e. Curcuma and Kaempferia species. However, not much scientific studies have been done on E. elatior as an ornamental plant. Intensive research is urgently needed as this species is gaining popularity as cut flower. This study was aimed to determine the effects of the application of plant growth regulators on the vegetative growth and flowering of E. elatior var. pink. Paclobutrazol and uniconazole were the plant growth regulators applied in this study. These plant growth regulators are gebberellin biosynthesis inhibitors that result in reduced cell elongation...

PeerJ, 2019

This research aims to determine growth and deficiency patterns as well as antioxidative potential... more This research aims to determine growth and deficiency patterns as well as antioxidative potentials of Japanese mint (Mentha arvensis) hydroponically grown under limited macronutrients and micronutrients. The experiment was conducted for 60 days after transplanting in an evaporative greenhouse (avg temp = 28–30 °C, 60–65 %RH), using deep water culture technique. Plants were grown in nutrient solution consisting of complete Hoagland’s solution (CTRL), and nutrient solutions lacking one of the following macronutrients and micronutrients: nitrogen (-N), phosphorus (-P), potassium (-K), iron (-Fe), manganese (-Mn), and copper (-Cu). The deficiency symptoms, growth patterns, and stress response mechanism were followed. All treatments except for the CTRL induced deficiency symptoms and physiological changes. Macronutrient deprivation reduced growth determined by the morphological parameters while micronutrient omission had no effect except for no iron treatment. The result showed that pota...

Sains Malaysiana

A study was conducted to determine the effects of a plant growth regulator (paclobutrazol, PBZ) a... more A study was conducted to determine the effects of a plant growth regulator (paclobutrazol, PBZ) and commercial fertilizer (Krista-K Plus) as a source of potassium nitrate (KNO3) on the growth of Xanthostemon chrysantus. It was also attempted to investigate the anatomical changes in the leaf and stem after the treatment. Nine treatments i.e., control (no PBZ and Krista-K Plus application), 0 PBZ gL-1 + 100 g Krista-K Plus, 0 PBZ gL-1 + 200 g Krista-K Plus, 0.125 PBZ gL-1 + 0 g Krista-K Plus, 0.125 PBZ gL-1 + 100 g Krista-K Plus, 0.125 PBZ gL-1 + 200 g Krista-K Plus, 0.25 PBZ gL-1 + 0 g Krista-K Plus, 0.25 PBZ gL-1 + 100 g Krista-K Plus and 0.25 PBZ gL-1 + 200 g Krista-K Plus, were tested. PBZ was soil drenched at the commencement of the study while Krista-K Plus was applied at three months intervals. Plant growth performance such as tree height, diameter at breast height, canopy diameter and leaf area were recorded monthly throughout the study period. Stem and leaf samples were colle...

VII International Postharvest Symposium, 2013

XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010): International Symposium on Plant Physiology from Cell to Fruit Production System, 2012

Determination of seed moisture content (MC) has conventionally been done by oven drying at 103°C ... more Determination of seed moisture content (MC) has conventionally been done by oven drying at 103°C for 16 h according to International Seed Testing Association. Modeling has recently been found useful for the prediction of MC of some recalcitrant seeds. In this study, predictive models were developed to estimate the MC of Baccaurea motleyana seeds. The seeds extracted from mature but unripe fruits were air dried at 25±2°C and 55±5% relative humidity (RH) for 1-5 days in a 24-hour airconditioned laboratory. A total of 27 seeds were drawn randomly at predetermined intervals. The weight (FW), length (L), width (W) and thickness (T) of each seed were recorded. Volume of seed, V, was calculated as L×W×T. MC of each seed was then determined by standard oven drying procedure. Two-thirds of the data of each desiccation period were used for model building. The relationships between response variables (MC; Y) versus predictor variables (FW, L, W and T; X) of seeds were first determined by scatter plot and correlation analyses. Then, regression models were developed for estimation of seed MC. The models were validated using the remaining one-third of the collected data. Among the seven candidate models developed, MC of B. motleyana seeds (Ŷ) can be estimated as Ŷ = 22.9-25.9L-36.7T + 338FW in terms of simplicity and accuracy. The model is statistically significant (P<0.05) with R 2 and SE E values of 0.84 and 5.88% respectively. In the validation procedure, I 2 and RMSE were 0.89 and 4.87% respectively with this selected model. The good fit of selected model gives an indication of the potential of measured seed variables for estimating seed MC of B. motleyana. The method also provides an important basis for future research on recalcitrant and intermediate seeds of other species.

A study was conducted to investigate the effects of plant growth retardant, Paclobutrazol (PBZ) o... more A study was conducted to investigate the effects of plant growth retardant, Paclobutrazol (PBZ) on the growth performance and public preference on the treated-Syzygium myrtifolium (Roxb.) Walp. for container planting. In landscape, S. myrtifolium is always planted as a hedge plant, single planting or topiary for roadsides, urban parks, house lawns and golf clubs. However, it requires frequent trimming to maintain the aesthetic functions as it grows vigorously. PBZ was thought to be a better technique to reduce trimming activity and at the same time able to maintain crown form. S. myrtifolium plants were planted in polyethylene bags (33 cm x 27 cm) filled with soil, organic matter and sand (3:2:1). PBZ at rates of 0, 1.25, 2.50 and 3.75 g/L were soil drenched at 30 days after the plants were trimmed at approximately 100 cm in height and new shoots were produced. Growth performance (plant height, leaf area and leaf area index) of S. myrtifolium were observed monthly, while public pref...

Trimming procedures in the maintenance of a landscaped area are costly, time consuming and labour... more Trimming procedures in the maintenance of a landscaped area are costly, time consuming and labour intensive. Disporal of the great quantity of trimmed biomass is also an issue in certain countries. Paclobutrazol, which inhibits the gibberellin biosynthesis in plants was studied for its potential of retaining the landscape functions of some common hedge plants in Malaysia. The species under study were Acalypha siamensis, Ficus microcarpa and Syzygium oleina. Appropriate dosages of this plant growth regulator were better in controlling the growth of these species as compared to the conventional method of shoot trimming.

ABSTRACT A study was conducted to investigate the growth performance and flowering of Xanthostemo... more ABSTRACT A study was conducted to investigate the growth performance and flowering of Xanthostemon chrysantus at two urban sites, namely, Metropolitan Batu Park (MBP) and Pusat Bandar Manjalara (PBM). Soil physical and chemical properties of the sites were inspected. Growth attributes such as tree height, diameter at breast height, canopy diameter, leaf area, leaf area index and relative chlorophyll content were recorded monthly. Flowering occurrence was scored as abundance of flowers. Differences in diameter at breast height and canopy diameter at both sites were observed throughout the study period. Tree height and relative chlorophyll content had no variations. Leaf area and leaf area index only differed for several months when higher amounts of rainfall were received. On the other hand, flower abundance was significantly different in December 2010, July 2011 and August 2011. Trees at PBM flowered throughout the year, unlike trees at MBP. Soil properties, rainfall and individual tree condition (vegetative or flowering phase) may cause variations in growth and flowering of the species. The results showed that X. chrysanthus was suitable for urban landscape as it was able to tolerate the harsh urban environment.

2011 IEEE Symposium on Business, Engineering and Industrial Applications (ISBEIA), 2011

Abstract The work conducted in this study is based on a preliminary data collection for assessing... more Abstract The work conducted in this study is based on a preliminary data collection for assessing a soil status in a 5-year old Karas agroforestry plantations in Rembau, Negeri Sembilan, Malaysia. Three agroforestry components involved in this study include (1) ...

Annals of Applied Biology, 2012

Biologishe Bundesanstalt, Bundessortenamt and CHemical Industry (BBCH) scales are a system for th... more Biologishe Bundesanstalt, Bundessortenamt and CHemical Industry (BBCH) scales are a system for the uniform coding of phenologically similar growth stages of plants, using a two-digit decimal code. This paper describes the phenological growth stages of a landscape tree, Xanthostemon chrysanthus using the BBCH-scale. Detailed descriptions of principal growth stages for bud, leaf and shoot development, inflorescence emergence, flowering, fruit development, maturity or ripening of fruit and seed, and other secondary growth stages are provided. The developed scale will be of great help to landscape managers and researchers for better communication, more efficient planning of management practices and experiments of flowering trees.

Pertanika J. Trop. Agric. …, 2010

... Ahmad Nazarudin Mohd. Roseli, Tsan Fui Ying and Mohd. Fauzi Ramlan 4 Pertanika J. Trop. ... T... more ... Ahmad Nazarudin Mohd. Roseli, Tsan Fui Ying and Mohd. Fauzi Ramlan 4 Pertanika J. Trop. ... The financial support for this research came from the Malaysian Government (IRPA 01-04-01-0074 EA001). REFERENCES Ahmad Nazarudin, MR, Tsan, FY and Adnan, M. (2003). ...

Journal of Tropical Forest …, 2007

Effects of paclobutrazol on the growth and anatomy of stems and leaves of Syzygium campanulatum. ... more Effects of paclobutrazol on the growth and anatomy of stems and leaves of Syzygium campanulatum. A study was conducted to determine the effects of paclobutrazol on plant height and leaf area of Syzygium campanulatum. The height of paclobutrazoltreated (1.25, 2.50 and 3.75 g l-1) plants was found to be inhibited compared with non-treated plants. The treated plants had smaller leaves compared with those of non-treated plants, one month after treatment. However, there was no difference in plant height and leaf area between plants treated with different rates of paclobutrazol. Scanning electron micrographs of stems showed reduction in xylem thickness, while in the leaves, palisade and spongy parenchyma cells were more closely arranged in response to paclobutrazol. There was also an increase in palisade thickness of leaves of plants treated with 3.75 g l-1 paclobutrazol. Paclobutrazol was found to effectively inhibit plant height and leaf expansion and alter the stem and leaf anatomy of S. campanulatum.