Variability of quantitative traits in wheat after gamma irradiating seeds of different age
1997
Petrovic, J.
An effect of the acute gamma irradiation of summer wheat seeds (winter varieties, namely seeds of Triticum aestivum L. variety Lutescens, cultivar Istra; Triticum aestivum L. variety Erythrospermum, cultivar Solaris) on the variability of quantitative traits in M1-generation was investigated. Seeds after one-year storage and seeds harvested in the year of the experiment launch were used. Gamma radiation dosages of 150 Gy and 2,000 Gy were applied to dry seeds at 12 percent moisture. Variability of quantitative traits evaluated was significantly influenced by cultivars and radiation dosages. Also, variability of plant height, spike length, number of grains in spike and weight of grains in spike was significantly influenced by age of seeds. Furthermore, spike length, number of grains in spike, weight of grains in spike and total weight of plant were influenced by interaction of variety and age of seeds from the variability point of view. Height of plant was highly significantly influenced by interaction of variety, age of seeds and the radiation dosage. When examining quantitative traits, responses of cultivars to radiation dosages differed. A tendency to decreasing average values of traits examined owing to radiation dosages applied was found. Using older seeds on average there were obtained significantly lower plants with longer spikes, higher number of grains in spike and with higher weight of grains in spike
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