Özet:

Crataegus microphylla, C. monogyna, C. monogyna subsp. The aim is to identify appropriate methods to eliminate the barrier obstacles of the seeds of Azarella, C. pontica and C. pseudoheterophylla species. The seeds are collected from areas where the species naturally spread. For the removal of fertilization obstacles, the 20th, 40th, 60th and 90th days of cold refining, 60th and 90th days of cold refining, in different periods (30, 75, 105, 120, 150 and 180 minutes) concentrated (%98) sulphuric acid (H2SO4) waiting processes and in different periods of sulphuric acid waiting seeds have been applied autumn crops. The October three repeated random full blocks were performed in greenhouse and open space conditions according to the test pattern. Over the course of 90 days, observations have been carried out, the percentage of grinding and the rate of grinding has been determined. C. microphylla, C. monogyna, C. pontica and C. pseudoheterophylla species have not been obtained. Only C. monogyna subsp. It has grown in the Azarella seeds. The monogy subsp. The highest grinding percentage in azarella seeds (17.5%) is 120 minutes H2SO4+ 90 days cold grinding process is obtained in greenhouse conditions in the seeds.

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