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Method of testing of the seed traits and seedling development under abiotic stress conditions for selection of oilseed rape genetic resources
Bláha, Ladislav ; Vyvadilová, Miroslava
The method is based on laboratory tests of speed of seed germination, emergence and seedling growth under different stress conditions simulated by subnormal water level, extreme high and low temperatures. It allows to eliminate already at the seed level the plant materials (initial breeding materials and cultivars) which do not tolerate extreme temperatures and temperature changes during germination, have a low water use efficiency and are intolerant to abiotic stresors. It was confirmed that these genotypes have also poor field emergence and initial growth of roots with implications for further vegetation period, mainly for over wintering and spring regeneration what has significant influence on the yield. The method represents the tool for screening of genetic resources with the resistance to the abiotic stresors and this technology process is acceptable also for other crops.
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Biological characteristics and grow conditions for climbing legumes in permanent grasslands
KRATOCHVÍLOVÁ, Eva
This bachelor´s work is focused on the climbing legumes. Literature review summarizes the importance and ecological requirements of species of meadow vetchling (Lathyrus pratensis) and tufted vetch (Vicia cracca) and describes vegetation types with the occurrence of climbing legumes. Legumes are excellent forage, but they also contain some antinutritional substances and are often attacked by pests and diseases. Production of seed is difficult because of uneven ripening, dehiscent pods, seed dormancy and hard seeds. In the practical part were at selected localities conducted botanical images. These localities were compared with each other in terms of vegetation composition. On the localities were collected pods of monitored species. Seeds were after shelling used to determine seedling and germination.
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Ants as dispersers of seeds in meadow vegetation
KONEČNÁ, Marie
Seed dispersal by ants was investigated in a wet meadow. Vegetation and viable seed bank of places with and without ant-hill were compared. The response of ants to the presence of elaiosom on seeds of myrmecochorous plant Pedicularis sylvatica was observed.
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The study of plasma influence on seed quality
PETŘÍK, Vladimír
The main subject of this bachelor thesis is to study the effect of plasmas on seed quality Papaver somniferum L. and Fagopyrum esculentum Moench. It deals with the observation of the number of garminated seeds, lenght of germs, dry weight stem and finally by examining changes in the surface of the seeds using an electron microscope. The results are reported in the tables, they are graphically compiled and evaluated.
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Seeds surface plasma modification
HRUŠKOVÁ, Iveta
Aim of diploma work is research of plasma influence on seed germination in some plant species (wheat and oat). The complex work includes parts both physical-technological and biological. The work discusses a selection of useful seeds for the plasma treatment and describes parameters of plasma processing. It discusses results of germination testing and early growth of seedlings. Parts of the work are electron microscopy output, data processing result, and appendix.
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Vliv okolního prostředí na semena
Bláha, L. ; Kohout, Ladislav ; Hnilička, F. ; Gottwaldová, P. ; Jankovská, P.
Stress abiotic factors affect chemical composition of seeds, yielding traits, seed traits and traits of sprouting plants-especially root traits: length, surface, weight, nutrient uptake, number of root tips, number of root hairs, number of lateral roots and density
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