The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform
Jian Fang - One of the best experts on this subject based on the ideXlab platform.
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TCP-Peach+: Enhancement of TCP-Peach for
2020Co-Authors: Ian F. Akyildiz, Xin Zhang, Jian FangAbstract:In this letter an improvement to TCP-Peach conges- tion control scheme, called TCP-Peach+, is proposed to further im- prove the goodput performance for satellite IP networks. In TCP- Peach+, two new algorithms, Jump Start and Quick Recovery, are proposed for congestion control in satellite networks. These algo- rithms are based on low priority segments, called NIL segments, which are used to probe the availability of network resources as well as error recovery. Simulation experiments show that TCP- Peach+ outperforms TCP-Peach in terms of goodput and achieves fair share of network resources as well.
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TCP-Peach+: Enhancement of TCP-Peach for satellite IP networks
IEEE Communications Letters, 2002Co-Authors: Xin Zhang, Jian FangAbstract:In this letter an improvement to TCP-Peach congestion control scheme, called TCP-Peach+, is proposed to further improve the goodput performance for satellite IP networks. In TCP-Peach+, two new algorithms, jump start and quick recovery, are proposed for congestion control in satellite networks. These algorithms are based on low priority segments, called NIL segments, which are used to probe the availability of network resources as well as error recovery. Simulation experiments show that TCP-Peach+ outperforms TCP-Peach in terms of goodput and achieves fair share of network resources as well.
Carlos H. Crisosto - One of the best experts on this subject based on the ideXlab platform.
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Peach Quality and Postharvest Technology
Acta Horticulturae, 2006Co-Authors: Carlos H. CrisostoAbstract:New Peach cultivars are being planted that have markedly different flavor qualities (low acid, high acid, high soluble solids concentration, highly aromatic, non-melting, etc.), and are reaching new markets with diverse consumer groups. Short- and long-term approaches to maintain flavor are being tested. In the shortterm, proper temperature management for packers, shippers, buyers and receivers; and preconditioning/preripening treatments at the shipping point are commercially used with success in California and Chile. Educational and promotional programs on Peach handling/ripening for Peach shippers, buyers, retailers and consumers have been established as well. In the long-term, programs must address understanding the genetic and biochemical basis of flavor, antioxidant pathways, and the genetic control of chilling injury using available molecular genetics technology. The use of this new information and techniques will allow breeding programs to develop Peach cultivars with acceptable flavor, improved antioxidant content and freedom from chilling injury. In addition to the basic research described above, there is the need for applied research focusing on understanding and describing Peach quality through sensory evaluation, nondestructive sensors, and industry quality surveys. The role of orchard factors on Peach quality also requires study. A classification of current Peach cultivars into different organoleptic/flavor groups would be useful. The creation of these specific and well-defined Peach flavor groups can be used for promotion and marketing activities focused toward different ethnic groups. Work on postharvest decay control screening different food additives and low-toxicity chemicals as potential alternatives or complements to synthetic fungicides for the control of the most important postharvest pathogens is being carried out. This work needs to be developed further as pesticide residues on produce will become an even greater consumer concern in the future.
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chilling injury in Peach and nectarine
Postharvest Biology and Technology, 2005Co-Authors: Susan Lurie, Carlos H. CrisostoAbstract:Peaches and nectarines ripen and deteriorate quickly at ambient temperature. Cold storage is used to slow these processes and decay development. However, low temperature disorders, chilling injury classified as internal breakdown, limit the storage life of Peaches and nectarines under refrigeration. The onset of chilling injury symptoms determines the postharvest storage/shipping potential because their development reduces consumer acceptance. Chilling injury is genetically influenced and triggered by a combination of storage temperature and storage period. It manifests itself as fruit that are dry and have a mealy or woolly texture (mealiness or woolliness), or hard textured fruit with no juice (leatheriness), fruit with flesh or pit cavity browning (internal browning), or with flesh bleeding (internal reddening). In this review, we describe what is known about the etiology of each of these types of chilling injury symptoms as well as the biochemical processes in the fruit tissue responsible for their development. We also report on pre- and postharvest manipulations or treatments that can affect the time of appearance or severity of chilling injury symptoms. © 2005 Elsevier B.V. All rights reserved.
Xin Zhang - One of the best experts on this subject based on the ideXlab platform.
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TCP-Peach+: Enhancement of TCP-Peach for
2020Co-Authors: Ian F. Akyildiz, Xin Zhang, Jian FangAbstract:In this letter an improvement to TCP-Peach conges- tion control scheme, called TCP-Peach+, is proposed to further im- prove the goodput performance for satellite IP networks. In TCP- Peach+, two new algorithms, Jump Start and Quick Recovery, are proposed for congestion control in satellite networks. These algo- rithms are based on low priority segments, called NIL segments, which are used to probe the availability of network resources as well as error recovery. Simulation experiments show that TCP- Peach+ outperforms TCP-Peach in terms of goodput and achieves fair share of network resources as well.
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TCP-Peach+: Enhancement of TCP-Peach for satellite IP networks
IEEE Communications Letters, 2002Co-Authors: Xin Zhang, Jian FangAbstract:In this letter an improvement to TCP-Peach congestion control scheme, called TCP-Peach+, is proposed to further improve the goodput performance for satellite IP networks. In TCP-Peach+, two new algorithms, jump start and quick recovery, are proposed for congestion control in satellite networks. These algorithms are based on low priority segments, called NIL segments, which are used to probe the availability of network resources as well as error recovery. Simulation experiments show that TCP-Peach+ outperforms TCP-Peach in terms of goodput and achieves fair share of network resources as well.
Maria F Drincovich - One of the best experts on this subject based on the ideXlab platform.
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metabolic profiling during Peach fruit development and ripening reveals the metabolic networks that underpin each developmental stage
Plant Physiology, 2011Co-Authors: Veronica A Lombardo, Sonia Osorio, Julia Borsani, Martin A Lauxmann, Claudia A Bustamante, Claudio O Budde, Carlos S Andreo, Maria V Lara, Alisdair R Fernie, Maria F DrincovichAbstract:Fruit from rosaceous species collectively display a great variety of flavors and textures as well as a generally high content of nutritionally beneficial metabolites. However, relatively little analysis of metabolic networks in rosaceous fruit has been reported. Among rosaceous species, Peach (Prunus persica) has stone fruits composed of a juicy mesocarp and lignified endocarp. Here, Peach mesocarp metabolic networks were studied across development using metabolomics and analysis of key regulatory enzymes. Principal component analysis of Peach metabolic composition revealed clear metabolic shifts from early through late development stages and subsequently during postharvest ripening. Early developmental stages were characterized by a substantial decrease in protein abundance and high levels of bioactive polyphenols and amino acids, which are substrates for the phenylpropanoid and lignin pathways during stone hardening. Sucrose levels showed a large increase during development, reflecting translocation from the leaf, while the importance of galactinol and raffinose is also inferred. Our study further suggests that posttranscriptional mechanisms are key for metabolic regulation at early stages. In contrast to early developmental stages, a decrease in amino acid levels is coupled to an induction of transcripts encoding amino acid and organic acid catabolic enzymes during ripening. These data are consistent with the mobilization of amino acids to support respiration. In addition, sucrose cycling, suggested by the parallel increase of transcripts encoding sucrose degradative and synthetic enzymes, appears to operate during postharvest ripening. When taken together, these data highlight singular metabolic programs for Peach development and may allow the identification of key factors related to agronomic traits of this important crop species.
Ksenija Gasic - One of the best experts on this subject based on the ideXlab platform.
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An Introduction to Peach (Prunus persica)
Genetics and Genomics of Rosaceae, 2020Co-Authors: Douglas G. Bielenberg, Ksenija Gasic, Jose X. ChaparroAbstract:When considering a broad cross section of climates and growing regions, the Peach (Prunus persica (L) Batsch) is the most prevalent of the stonefruits, rivaling apple in terms of adaptation. The broad distribution reflects its extensive cultivation, as its prized fruits drove its rapid dissemination and selection for adaptation to new areas. The relatively short juvenility period and ease of making controlled crosses have made the Peach the most successfully bred tree fruit crop. Today more Mendelian transmitted traits are understood in Peach than in any other tree (Scorza and Sherman, 1996). These facets, in conjunction with a small genome size have made Peach a desirable system for breeders and bench scientists focused on the common goal of tree fruit improvement. Peach is a member of the family Rosaceae, subfamily Prunoidae. It is a member of the subgenus Amygdalus, that contains Peaches, Peach relatives and almond relatives. The most closely related species to Peach are P. mira Koehne, P. kansuensis Rehd., and P. davidiana (Carr.) Franch. Members of this subgenus are sexually compatible and produce viable and fertile F1 hybrids (Martinez-Gomez et al., 2003). These species have been used to extend the genetic pool in Peach and serve as sources of insect, pathogen, and nematode resistance for breeding of Peach scions and rootstocks (Martinez-Gomez et al., 2003). Peach evolved in a more mesic environment than the almonds and are typically characterized by a fleshy fruit that does not dehisce, in contrast to almonds (Martinez-Gomez et al., 2003). Peach is represented in the wild as P. persica subsp. ferganensis in Tajikistan, Kyrgyzstan and Uzbekistan (Okie and Rieger, 2003) and may also be represented by Mao Tao (hairy Peach) type Peaches of China. Clearly defined wild Peach populations have not been reported in China and the Mao Tao Peach is probably the most primitive (ancestral) form. Wild species have been cultivated near the Chinese center of origin for at least four thousand years (Rieger,
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Peach
Fruit Breeding, 2011Co-Authors: David H. Byrne, Daniele Bassi, Maria Bassols Raseira, Maria Claudia Piagnani, Ksenija Gasic, Gregory L. Reighard, María Angeles Moreno, Salvador PérezAbstract:65 Pags., Tabls., Bibliograf.The Peach is the third most produced temperate tree fruit species behind apple and pear. This diploid species, Prunus persica, is naturally self-pollinating unlike most of the other cultivated Prunus species. Its center of diversity is in China, where it was domesticated. Starting about 3,000 years ago, the Peach was moved from China to all temperate and subtropical climates within the Asian continent and then, more than 2,000 years ago, spread to Persia (present day Iran) via the Silk Road and from there throughout Europe. From Europe it was taken by the Spanish and Portuguese explorers to the Americas. It has an extensive history of breeding that has resulted in scion cultivars with adaptability from cold temperate to tropical zones, a ripening season extending for 6–8 months, and a wide range of fruit and tree characteristics. Peach has also been crossed with species in the Amygdalus and Prunophora subgenera to produce interspecific rootstocks tolerant to soil and disease problems to which P. persica has limited or no resistance. It is the best known temperate fruit species from a genetics perspective and as a model plant has a large array of genomics tools that are beginning to have an impact on the development of new cultivars.Peer reviewe
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Characterisation of vineyard Peach biodiversity
Acta Horticulturae, 2001Co-Authors: Ksenija Gasic, V. Ognjanov, R. Boskovic, K. R. Tobutt, C. JamesAbstract:Yugoslavia has a diverse population of vineyard Peaches, which has been rarely used for genetic improvement. A programme for characterising the diversity of vineyard Peaches began at Novi Sad in 1989 and some 457 vineyard Peach accessions have been collected and evaluated for morphological and phenological traits. To assess the molecular diversity of the vineyard Peaches collected in comparison with standard cultivars, we used isoenzymes and RFLPs. We analysed 79 vineyard Peach accessions and 33 Peach cultivars for 32 enzyme systems using PAGE. Good activity and separation were achieved for all systems including ones previously reported as poorly resolved. On the basis of polymorphism observed for 21 enzyme systems (ACP, AKP, AMY, ADH, CAD, DIA, EST, FRK, GAL, GLU, GOT, GDH, HEX, IDH, MDH, ME, MNR, PEP, PRX, PHO and SKD) 31 loci were scored in vineyard Peach and cultivars. For 11 enzyme systems (ACO, AAP, ARA, ENP, FDH, GPI, G6PDH, G3PDH, LAP, PGM and PGD) no polymorphism was revealed. Thirty-six vineyard Peaches and 16 cultivars that revealed high levels of heterozygosity were analysed by RFLPs. Almond, Peach and cherry probes from the European Prunus Mapping Project were used in combination with the restriction endonucleases Dra I, Eco RI and Hind III. Polymorphism was revealed with 9 probes and 14 loci were proposed. Vineyard Peach accessions were polymorphic for 14 loci, and cultivars for 11.
