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Root structure of maize; effect of phytohormones
dc.creatorHusáková, Eva
dc.date.accessioned2020-07-07T20:23:40Z
dc.date.available2020-07-07T20:23:40Z
dc.date.issued2013
dc.identifier.urihttp://hdl.handle.net/20.500.11956/56539
dc.description.abstractAbstract_____________________________________________________________________________________________________________ 116 7. ABSTRACT Root structure of maize; effect of phytohormones This work is aimed to study the influence of the ethylene-synthesis inhibitor (1-AOA, aminooxoacetic acid) and a synthetic auxin-analogue (1-NAA, naphtylacetic acid) on the main-root structure development of maize (Zea mays L.) cv. Cefran with emphasis on aerenchyma formation. In maize, aerenchyma is induced by hypoxia, substrate mechanical impedance or ethylene. Therefore the plants have been cultivated not only in hydropony, but in a special "paper cultivation" minimizing stress influence of the environment too. A strong impact of cultivation conditions has been detected, especially concerning the amount and type of illumination. The most extended aerenchyma has been found in the middle of the main root-length, the least at the root base, with no difference among the treatments. Aerenchyma is probably formed by the process of programmed cell death (PCD). There is an important role of ethylene in the signalling pathway. It has been proved that auxin stimulates its synthesis. High concentrations of 1-NAA have inhibited the plant growth, in comparison with the concentration of 5.10-11 M, that has stimulated the shoot and root...cs_CZ
dc.description.abstractAbstract_____________________________________________________________________________________________________________ 116 7. ABSTRACT Root structure of maize; effect of phytohormones This work is aimed to study the influence of the ethylene-synthesis inhibitor (1-AOA, aminooxoacetic acid) and a synthetic auxin-analogue (1-NAA, naphtylacetic acid) on the main-root structure development of maize (Zea mays L.) cv. Cefran with emphasis on aerenchyma formation. In maize, aerenchyma is induced by hypoxia, substrate mechanical impedance or ethylene. Therefore the plants have been cultivated not only in hydropony, but in a special "paper cultivation" minimizing stress influence of the environment too. A strong impact of cultivation conditions has been detected, especially concerning the amount and type of illumination. The most extended aerenchyma has been found in the middle of the main root-length, the least at the root base, with no difference among the treatments. Aerenchyma is probably formed by the process of programmed cell death (PCD). There is an important role of ethylene in the signalling pathway. It has been proved that auxin stimulates its synthesis. High concentrations of 1-NAA have inhibited the plant growth, in comparison with the concentration of 5.10-11 M, that has stimulated the shoot and root...en_US
dc.languageČeštinacs_CZ
dc.language.isocs_CZ
dc.publisherUniverzita Karlova, Přírodovědecká fakultacs_CZ
dc.titleStruktura kořenového systému kukuřice seté; vliv fytohormonůcs_CZ
dc.typerigorózní prácecs_CZ
dcterms.created2013
dcterms.dateAccepted2013-09-16
dc.description.departmentKatedra experimentální biologie rostlincs_CZ
dc.description.departmentDepartment of Experimental Plant Biologyen_US
dc.description.facultyPřírodovědecká fakultacs_CZ
dc.description.facultyFaculty of Scienceen_US
dc.identifier.repId139406
dc.title.translatedRoot structure of maize; effect of phytohormonesen_US
dc.identifier.aleph001624677
thesis.degree.nameRNDr.
thesis.degree.levelrigorózní řízenícs_CZ
thesis.degree.disciplinePlant Anatomy and Physiologyen_US
thesis.degree.disciplineAnatomie a fyziologie rostlincs_CZ
thesis.degree.programBiologyen_US
thesis.degree.programBiologiecs_CZ
uk.faculty-name.csPřírodovědecká fakultacs_CZ
uk.faculty-name.enFaculty of Scienceen_US
uk.faculty-abbr.csPřFcs_CZ
uk.degree-discipline.csAnatomie a fyziologie rostlincs_CZ
uk.degree-discipline.enPlant Anatomy and Physiologyen_US
uk.degree-program.csBiologiecs_CZ
uk.degree-program.enBiologyen_US
thesis.grade.csProspěl/acs_CZ
thesis.grade.enPassen_US
uk.abstract.csAbstract_____________________________________________________________________________________________________________ 116 7. ABSTRACT Root structure of maize; effect of phytohormones This work is aimed to study the influence of the ethylene-synthesis inhibitor (1-AOA, aminooxoacetic acid) and a synthetic auxin-analogue (1-NAA, naphtylacetic acid) on the main-root structure development of maize (Zea mays L.) cv. Cefran with emphasis on aerenchyma formation. In maize, aerenchyma is induced by hypoxia, substrate mechanical impedance or ethylene. Therefore the plants have been cultivated not only in hydropony, but in a special "paper cultivation" minimizing stress influence of the environment too. A strong impact of cultivation conditions has been detected, especially concerning the amount and type of illumination. The most extended aerenchyma has been found in the middle of the main root-length, the least at the root base, with no difference among the treatments. Aerenchyma is probably formed by the process of programmed cell death (PCD). There is an important role of ethylene in the signalling pathway. It has been proved that auxin stimulates its synthesis. High concentrations of 1-NAA have inhibited the plant growth, in comparison with the concentration of 5.10-11 M, that has stimulated the shoot and root...cs_CZ
uk.abstract.enAbstract_____________________________________________________________________________________________________________ 116 7. ABSTRACT Root structure of maize; effect of phytohormones This work is aimed to study the influence of the ethylene-synthesis inhibitor (1-AOA, aminooxoacetic acid) and a synthetic auxin-analogue (1-NAA, naphtylacetic acid) on the main-root structure development of maize (Zea mays L.) cv. Cefran with emphasis on aerenchyma formation. In maize, aerenchyma is induced by hypoxia, substrate mechanical impedance or ethylene. Therefore the plants have been cultivated not only in hydropony, but in a special "paper cultivation" minimizing stress influence of the environment too. A strong impact of cultivation conditions has been detected, especially concerning the amount and type of illumination. The most extended aerenchyma has been found in the middle of the main root-length, the least at the root base, with no difference among the treatments. Aerenchyma is probably formed by the process of programmed cell death (PCD). There is an important role of ethylene in the signalling pathway. It has been proved that auxin stimulates its synthesis. High concentrations of 1-NAA have inhibited the plant growth, in comparison with the concentration of 5.10-11 M, that has stimulated the shoot and root...en_US
uk.file-availabilityV
uk.grantorUniverzita Karlova, Přírodovědecká fakulta, Katedra experimentální biologie rostlincs_CZ
thesis.grade.codeP
uk.publication-placePrahacs_CZ


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