Stress Conditions Research Papers - Academia.edu (original) (raw)
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Assessment methods for the seed germination are designed in an environment of ideal conditions, however, it is necessary to know the real behaviour in the field conditions. At this stage, on the series comes an important factor, which is... more
Assessment methods for the seed germination are designed in an environment of ideal conditions, however, it is necessary to know the real behaviour in the field conditions. At this stage, on the series comes an important factor, which is based on the ability of germination – the seed vigour. The seed vigour is characterized ability by the seeds to emerge and create a basis for a new plant under real or stress conditions. The purpose of this study was to obtain general facts about the heritability of the seed vigour. Effect of drought stress on the observed characteristics of spring barley (Hordeum vulgare L.) was evaluated in the pot experiment. The root system size and seed vigour were evaluated in four genotypes. Seed vigour as the germination percentage under drought (-0.5 MPa) and temperature stress (10°C) was evaluated. It was also evaluated the relationship between seed vigour and the root system size of the parents and their progenies. Statistical significant correlations (r = 0.747–0.801) of the root system size in the stage of stem elongation and seed vigour in Variant III (moderate stress) were found. The root system size of parents at the stage of heading in unstressed variant (Variant II) statistically significantly (r = 0.730–0.939) influenced the length of the plumula and roots of the progenies in both variants of seed vitality testing (i.e. control and drought stress).