14 research outputs found
Enhancement of a new method in cereal breeding programmes
Homozygous doubled haploid (DH) plants and lines can be used in cereal breeding programmes. Methods
based on androgenesis induction are a common way to produce homogenous basic material for variety
development and genetic research purposes. Anther culture is a simple and rapid method for DH production
in case of major cereal crops like barley and wheat. Oat is known as recalcitrant species for tissue culture
response specially anther and microspore culture. Its low frequency DH production limits extensive
application in breeding. Our aim was to start developing an improved protocol to generate acceptable number
of DH lines for breeding. Many factors (low induction rate, essential manpower needed, plant regeneration
problems and genotype dependence) hinder the development and application of the methods of in vitro
androgenesis. Understanding of topic “in vitro response” and “plantlet regeneration frequency” are crucial
factors in cereal science, too. Our aimed results of oat (Avena sativa L.) will open new genetic solutions in
plant science, plant physiology and cell- and tissue culture of cereals and in the development of new
varieties
A diszkrét tomográfia új irányzatai és alkalmazása a neutron radiográfiában = New directions in discrete tomography and its application in neutron radiography
A projekt során alapvetĹ‘en a diszkrĂ©t tomográfia alábbi terĂĽletein vĂ©geztĂĽk eredmĂ©nyes kutatásokat: rekonstrukcĂł legyezĹ‘nyaláb-vetĂĽletekbĹ‘l; geometriai tulajdonságokon alapulĂł rekonsrukciĂłs Ă©s egyĂ©rtelműsĂ©gi eredmĂ©nyek kiterjeszthetĹ‘sĂ©gĂ©nek vizsgálata; Ăşjfajta geometriai jellemzĹ‘k bevezetĂ©se; egzisztenica, unicitás Ă©s rekonstrukciĂł vizsgálata abszorpciĂłs vetĂĽletek esetĂ©n; 2D Ă©s 3D rekonstrukciĂłs algoritmusok fejlesztĂ©se neutron tomográfiás alkalmazásokhoz; bináris rekonstrukciĂłs algoritmusok tesztelĂ©se, benchmark halmazok Ă©s kiĂ©rtĂ©kelĂ©sek; a rekonstruálandĂł kĂ©p geometriai Ă©s egyĂ©b strukturális informáciĂłinak kinyerĂ©se közvetlenĂĽl a vetĂĽletekbĹ‘l. A kidolgozott eljárásaink egy rĂ©szĂ©t az általunk fejlesztett DIRECT elnevezĂ©sű diszkrĂ©t tomográfiai keretrendszerben implementáltuk, Ăgy lehetĹ‘sĂ©g nyĂlt az ismertetett eljárások tesztelĂ©sĂ©re Ă©s a kĂĽlönbözĹ‘ megközelĂtĂ©sek hatĂ©konyságának összevetĂ©sĂ©re is. Kutatási eredmĂ©nyeinket több, mint 40 nemzetközi tudományos közlemĂ©nyben jelentettĂĽk meg, a projekt futamideje alatt kĂ©t rĂ©sztvevĹ‘ kutatĂł is doktori fokozatot szerzett a kutatási tĂ©mábĂłl. A projekt során több olyan kutatási irányvonalat fedtĂĽnk fel, ahol elkĂ©pzelĂ©seink szerint további jelentĹ‘s elmĂ©leti eredmĂ©nyeket lehet elĂ©rni, Ă©s ezzel egyidĹ‘ben a gyakorlat számára is Ăşj jellegű Ă©s hatĂ©konyabb diszkrĂ©t kĂ©palkotĂł eljárások tervezhetĹ‘k Ă©s kivitelezhetĹ‘k. | In the project entitled ""New Directions in Discrete Tomography and Its Applications in Neutron Radiography"" we did successful research mainly on the following topics on Discrete Tomography (DT): reconstruction from fan-beam projections; extension of uniqueness and reconstruction results of DT based on geometrical priors, introduction of new geometrical properties to facilitate the reconstruction; uniqueness and reconstruction in case of absorbed projections; 2D and 3D reconstruction algorithms for applications in neutron tomography; testing binary reconstruction algorithms, developing benchmark sets and evaluations; exploiting structural features of images from their projections. As a part of the project we implemented some of our reconstruction methods in the DIRECT framework (also developed at our department), thus making it possible to test and compare our algorithms. We published more than 40 articles in international conference proceedings and journals. Two of our project members obtained PhD degree during the period of the project (mostly based on their contributions to the work). We also discovered several research areas where further work can yield important theoretical results as well as more effective discrete reconstruction methods for the applications
Magyar TanĂtĂłkĂ©pzĹ‘ 18 (1903) 07
Magyar TanĂtĂłkĂ©pzĹ‘
A TanĂtĂłkĂ©pzĹ‘-intĂ©zeti Tanárok Országos EgyesĂĽletĂ©nek közlönye
18. Ă©vfolyam, 07. fĂĽzet
Budapest, 1903. jĂşlius h
Enhancement of a new method in cereal breeding programmes
Homozygous doubled haploid (DH) plants and lines can be used in cereal breeding programmes. Methods based on androgenesis induction are a common way to produce homogenous basic material for variety development and genetic research purposes. Anther culture is a simple and rapid method for DH production in case of major cereal crops like barley and wheat. Oat is known as recalcitrant species for tissue culture response specially anther and microspore culture. Its low frequency DH production limits extensive application in breeding. Our aim was to start developing an improved protocol to generate acceptable number of DH lines for breeding. Many factors (low induction rate, essential manpower needed, plant regeneration problems and genotype dependence) hinder the development and application of the methods of in vitro androgenesis. Understanding of topic “in vitro response” and “plantlet regeneration frequency” are crucial factors in cereal science, too. Our aimed results of oat (Avena sativa L.) will open new genetic solutions in plant science, plant physiology and cell- and tissue culture of cereals and in the development of new varieties
Magyar TanĂtĂłkĂ©pzĹ‘ 15 (1900) 10.
Magyar TanĂtĂłkĂ©pzĹ‘
A TanĂtĂłkĂ©pzĹ‘-intĂ©zeti Tanárok Országos EgyesĂĽletĂ©nek közlönye
15. Ă©vfolyam, 10. fĂĽzet
Budapest, 1900. deczember h
Magyar TanĂtĂłkĂ©pzĹ‘ 21 (1906) 01
Magyar TanĂtĂłkĂ©pzĹ‘
A TanĂtĂłkĂ©pzĹ‘-intĂ©zeti Tanárok Országos EgyesĂĽletĂ©nek közlönye
21. Ă©vfolyam, 01. fĂĽzet
Budapest, 1906. január h
Magyar TanĂtĂłkĂ©pzĹ‘ 19 (1904) 08.
Magyar TanĂtĂłkĂ©pzĹ‘
A TanĂtĂłkĂ©pzĹ‘-intĂ©zeti Tanárok Országos EgyesĂĽletĂ©nek közlönye
19. Ă©vfolyam, 08. fĂĽzet
Budapest, 1904. oktĂłber h
Magyar TanĂtĂłkĂ©pzĹ‘ 16 (1901) 01
Magyar TanĂtĂłkĂ©pzĹ‘
A TanĂtĂłkĂ©pzĹ‘-intĂ©zeti Tanárok Országos EgyesĂĽletĂ©nek közlönye
16. Ă©vfolyam, 01. fĂĽzet
Budapest, 1901. január h
Magyar TanĂtĂłkĂ©pzĹ‘ 21 (1906) 03
Magyar TanĂtĂłkĂ©pzĹ‘
A TanĂtĂłkĂ©pzĹ‘-intĂ©zeti Tanárok Országos EgyesĂĽletĂ©nek közlönye
21. Ă©vfolyam, 03. fĂĽzet
Budapest, 1906. március h