Apelographic characteristics of reproductive organs of Žilavka and Blatina varieties (Vitis vinifera sp.) as a parameter of genotypic specificity

Abstract

Almost the entire grape production in BiH is realized in Herzegovina region, where for many years the relationship of the area under vineandthe area under a table grapesis approximately 80%:20%. Autochtonus wine varieties, Zilavka and Blatina have the greatest significance in the vineyard production in this region. That is the reason why they are the subject of numerous studies and analyzes. This paper presents the most important amphelometriccharacteristics of Žilavka nad Blatina varieties. Part of experimental studies on amphelometric characteristics of bunch, berries and seeds, are implemented in a vineyard of company ,,Aluminijurnski kombinat" located in Mostar region. Bearing in mind that the functional morphology of flowers in vine reproductive biology present an important factor in the effectiveness of the reproductive organs to the realization of high yields of appropriate quality grapes, special attention during the study is dedicated to the characteristics which have a direct impact to level of fertilization: bunch, berries and the seeds. The research was conducted during the period 2009-2011. Average bunch weight of Blatina variety for research period was 228.28 g, ranged from 169.35 to 289.19 g, with an average of 65.80 berries in a cluster. The average weight of berry was 3.49 g, with an average 1.51 seeds in the berries. The average bunch mass of the Zilavka variety, during the research period was 223.16 g and ranged from 170.06 to 325.45 g g, with an average of 114.47 berries in a cluster. The average weight of berry, was 2.14 g, with an average 1.76 seeds in the berries. Greater variation of tested characteristics, were found in Blatina variety which can be addresed to the varietal specificity of this variety to the process of pollination and thus the displacement of berries in a bunch.

Keywords

• variety
• bunch
• characteristics