2,739 research outputs found
Untersuchungen zur Biologie und den natürlichen Feinden von Deanolis sublimbalis SNELLEN (Lepidoptera, Pyralidae) an Mango in Papua New Guinea
No full textDeanolis sublimbalis SNELLEN (Lepidoptera: Pyralidae), the red banded mango caterpillar (RMBC), is a Southeast Asian insect species. It is now widely distributed throughout this region (India, Burma, Thailand, China, Brunei, Philippines, Indonesia, and Papua New Guinea) and was recently detected for the first time on mainland Australia, but so far has not been recorded in Pakistan, Nepal, and Malaysia (WATERHOUSE 1998). In Papua New Guinea (PNG) it is nowadays widely distributed throughout the mainland and islands (WATERHOUSE 1998). Although infestation levels of 40 – 50 % were recorded in the Philippines (TIPON 1979), very little is known about the biology of this pest, and there are only few references in the literature, the results differing significantly (WATERHOUSE 1998). Due to the contradictory opinions on the biology published, the following study was undertaken to obtain the basic information required for the development of an appropriate management technique for this pest. In particular, the fundamental data to clarify in the course of this study were: 1. life history and behaviour of RMBC, especially when mango is out of season. 2. search for other host plants of RMBC. 3. search for natural enemies of RMBC.Dt. Titel: Untersuchungen zur Biologie und den natürlichen Feinden von Deanolis sublimbalis SNELLEN (Lepidoptera, Pyralidae) an Mango in Papua New Guinea An vier Standorten in der Central Province von Papua Neuguinea wurde D. sublimbalis untersucht. Eier wurden fast immer am Fruchtstiel unter vertrockneten Blütenblättern abgelegt, meist zu 2-4. Eiablage auf die Früchte war sehr selten. Larven wurden in den Früchten von Mangifera indica, M. minor und M. odorata gefunden, nie an den anderen Anacardiaceen Spondias spp. und Anacardium occidentale oder den Myrtaceen Syzygium spp. Im Labor entwickelten sich in Früchten von A. occidentale (Cashew-Baum) nur 5 % der Larven zur Imago. Präpuppen und Puppen wurden nur unter der Rinde der Mangobäume gefunden oder in tiefen Rissen der Rinde. Parasitoide oder Pathogene der Eier oder Larven wurden nicht festgestellt. Die Prädatoren, wie die Weberameise Oecophylla smaragdina (F.), spielten bei D. sublimbalis keine Rolle
Mango Processing
No full textThe paper briefly reviews various techniques for processing mangoes, with greater detail on the process for puree. The author describes commercial mango operations in Thailand and Guatemala
Comparison of methods of extraction of antioxidant compounds from the peel from Mango (Manguifera indica L.)
No full textThere is considerable interest in characterising the antioxidant properties of many foods. Mango, (Mangifera indica L.) is a sub-tropical fruit of commercial importance. However, the skins are not normally eaten allthough they may contain nutritionally useful ingredients. We compared the efficiency of three different methods for extracting antioxidant compounds: methanol-acetone (MA), methanol-water (MW) and water (W) as solvents, for the extraction of phenolic compounds with antioxidant activity. The total phenolic content and the total antioxidant capacity (TAC) of the different extracts was measured by the oxygen radical absorbance capacity (ORAC) method. At the same time the influence of the pre-treatment drying methods freeze drying (F) and oven drying (O), were evaluated. The TAC of the extracts ranged from 4,539.0 to 11938.4 μM of Trolox equivalent (TE) per g of dry weight (DW), with the aqueous method (W) significantly the most effective. However, there was no statistical difference in the total phenolic content of the extracts. None of the drying methods had any significant effect on the total antioxidant capacity and the total phenolic content. The efficiency and simplicity of the aqueous extraction make it zan excellent method for the extraction of hydrophilic antioxidant compounds with important bioactive properties
Fruit Flies and Mango Seed Weevil in Relation to Quarantine
No full textThe author, an entomologist, reviewed the principal infestation barriers to mango export from Hawaii: fruit flies and the seed weevil. Because of these problems, he ventured that the total value of the conference participants' efforts and salaries for the three days of the event exceeded the annual value of commercial mango production in Hawaii
Sensory Quality of Mango Fruit
No full textThe author pointed out that the mango is somewhat unique in the wide variation of its sensory characteristics, depending on cultivar. Aspects such as appearance (skin and flesh color), aroma, sweetness, acidity, flesh texture, and the factors determining them were discussed, as was the interaction of consumer preferences and sensory qualities as it affects marketability
"Tra una guerra e una morte. Innovazione e conservazione nel teatro italiano
No full textIl saggio affronta l'arco temporale tra il 1914 e il 1924 nel teatro italiano evidenziando attraverso la dialettica tra le date, che vede in primo piano oltre ai due estremi il 1921, gli elementi di discontinuità e innovazione che lo caratterizzano in relazione agli elementi, viceversa, di forte conservazione che lo pervadono
Review of Fusarium species isolated in association with mango malformation in Australia
No full textMango malformation (MMD) is an economically significant disease of mango growing regions and a notifiable disease in Australia. Following an incursion of the disease in the Northern Territory (NT) in 2007, numerous Fusarium species were isolated from mango samples during surveillance activities in growing regions within the country between 2007 and 2013, including reported MMD pathogens (Fusarium mangiferae, F. proliferatum and F. pseudocircinatum), established pathogens of other hosts (e.g. F. fujikuroi, F. oxysporum, F. parvisorum, F. solani and F. verticillioides) and several undescribed species. In this paper we review the status of all species of Fusarium isolated from mango tissue associated with putative malformation symptoms in Australia since 2007, documenting location origins and diagnostic methods and re-assessing their identification based on phylogenetic analysis of available DNA sequences. Their taxonomic affiliations and pathogenicity in particular are discussed with implications for disease management including quarantine, while knowledge gaps are highlighted
Pathogenic Botryosphaeriaceae associated with Mangifera indica in the Kimberley Region of Western Australia
No full textMembers of the Botryosphaeriaceae, in particular Lasiodiplodia theobromae, Neofusicoccum parvum, N. mangiferum and Botryosphaeria dothidea, commonly cause stem cankers, dieback and stem end rot of mangoes worldwide. In the current study, eight taxa of Botryosphaeriaceae were identified as canker-associated fungi, pathogens, potential pathogens or endophytes of mangoes in the Kimberley, Australia. These include Neoscytalidium novaehollandiae, Ne. dimidiatum, Pseudofusicoccum adansoniae, P. ardesiacum, P. kimberleyense, Lasiodiplodia sp. 1, L. iraniensis and L. pseudotheobromae. The pathogenicity of a selection of these species toward fruit and branches was tested. All were pathogenic to mango in comparison to the control, with Lasiodiplodia spp. being the most pathogenic. It appears that either geographic isolation or the unique growing conditions in the Kimberley may have provided an effective barrier to the acquisition or establishment of known botryosphaeriaceous pathogens. Wounds caused by mechanical pruning may provide an entry point for infection, whilst severe pruning may increase plant stress
- …
