Vliv vnějšího prostředí na vlastnosti semen.
Authors: L. Bláha, L. Kohout, F. Hnilička, P. Gottwaldová, P. Kadlec, P. Jankovská
Page: 81-86
English / Anglicky:
The winter wheat cultivars (Estica, Samanta and Ebi), spring wheat cultivars (Mollera, AC Helena, Lucia), fodder mallow (Malva verticillata cv. Dolina) and Fagopyrum sp. were used in pot greenhouse experiments. Stress abiotic factors affect basic metabolit pathways (the rate of photosynthesis and respiration), chemical composition of seeds, yielding traits, seed traits and traits of sprouting plants. These changes are connected in the filial generation with tolerance to other abiotic stresses, root development and chemical composition of seeds (i.e result of change of root/shoot ratio). On the basis of so far obtained results it is possible to conclude that application of 24-epibrassinolide has substantial influence on the vigour of seeds, on the larger root system in filial generation and higher weight of the seeds. This phytohormon has a positive effect on the level of tolerance of plants against abiotic stresses and also in filial generation (influence across vigour of the seeds). The change of seed traits has statistically significant effect on change ofthe root system in the next generation. For each type ofstress special type of change of every seed trait exists. The improved response of seed traits to stress conditions is accessible also via plant breeding.
Key-words: 24-epibrassinolide; seeds; quality of seeds; net energy; abiotic stresses
Czech / Česky:
The winter wheat cultivars (Estica, Samanta and Ebi), spring wheat cultivars (Mollera, AC Helena, Lucia), fodder mallow (Malva verticillata cv. Dolina) and Fagopyrum sp. were used in pot greenhouse experiments. Stress abiotic factors affect basic metabolit pathways (the rate of photosynthesis and respiration), chemical composition of seeds, yielding traits, seed traits and traits of sproutin