SURVEY OF SEED GERMINATION AT PEAR LANDRACES

M. Dimitrijevic, A. Selamovska, S. Petrovic, S. Kratovalieva

Abstract: In survey of pear seed germination in the laboratory conditions were included 10 summer landraces in total; 9 as subject of survey (avche, zetvarka, petrovka, ilinka, burnusus, mustabej, bugaranka, sitnica and medenica) from which 1 is used as standard (karakamanka), collected during 2010 on the territory of Republic of Macedonia. Bearing in mind that sprouting is going a little harder in the laboratory, there were conducted three treatments before setting seed for germination: I-stored in refrigerator at +170C/ T for 1 week; II-stored in a freezer at -180C/ T for 24 hours and after at room temperature (+200C/ T) for a period of 12 hours; and III- stored in a refrigerator at +40C/ T for a period of 1 week. Each variety has a different number of seeds of different size, quantity of endosperm and thickness of the seed coat, but apparently induced by different temperatures affect the ability of seed germination. From the results obtained very clear and exact reflected the superiority of treatment II compared with the other two. The number of seeds in the fruit varies in wide limits of 0.1-9.0; according to the average value of this parameter examined pear landraces can be classified into three groups, namely 1st in range of 0.1-2.0 representing with 5 landraces; 2nd in range of 2.1-3.0 representing with 4 landraces and 3rd in range >3.1 representing only with one landrace. Landraces avche, burnusus, mustabej, bugaranka and sitnica have more seeds per fruit compared to karamanka in terms of average, which confirms the high statistical significant differences (p> 0.01, p> 0.05).

Keywords: landrace; pear; Pyrus communis L.; seed germination

Date published: 2019-04-19