최근 육성 포도 품종과 해외 도입 품종들의 생육 및 과실 특성 분석

Growth & Development and Fruit Characteristics of Newly Bred and Introduced Grape Cultivars

본 연구에서는 국내에서 최근 도입되거나 육종된 품종 등을대상으로 생육 및 과실 특성을 알아보고 국내 적응성을 검토하기 위해 수행되었다. 품종간 발아율은 ‘Stella’가 91.6%로 가장높았고, ‘My Heart’(78.3%), IFG-6(77.3%), ‘Hongju Seedless’ (73.2%) 순이었다. 품종별 꽃송이 발생률을 보면 ‘Stella’ 품종이 113.5%로 가장 높았으며 ‘IFG-6’ 품종의 꽃송이 발생률은45.3%로 다른 품종에 비해 낮았다. 신초의 굵기는 ‘Hongju Seedless’를 제외하고 나머지 세 품종에서는 11.0 ㎜ 이하로 조사되었으며, ‘Hongju Seedless’는 12.5 ㎜로 가장 굵고 ‘Stella’ 는 9.6 ㎜로 가장 얇은 것으로 나타났다. 과립 무게는 ‘My Heart’ 품종이 11.3 g으로 다른 품종에 비해 무거웠으며, ‘Stella’, ‘IFG-6’, ‘Hongju Seedless’ 순으로 나타났다. 품종별수확기 당도는 약19.0°Bx 이상이었으며, ‘IFG-6’가 20.2°Bx로가장 높았으며, ‘My Heart’, ‘Stella’, ‘Hongju Seedless’ 순으로 낮았다. 산도 함량은 ‘My Heart’ 품종이 0.39%로 가장 낮았으며, ‘IFG-6’, ‘Stella’, ‘Hongju Seedless’ 순으로 높았다. 착색은 ‘My Heart’의 경우 수확기가 지났는데도 불구하고 과피색이 붉은색으로 잘 변하지 않았으며, 불규칙적으로 포도에 착색이 되는 특징이 있어 착색을 증진시킬 수 있는 재배 기술의 개발이 필요할 것으로 판단되었다.

This study was conducted to investigate the growth and fruit characteristics of recently introduced or bred varieties in Korea and to review domestic adaptability. As for the sprouting rate among cultivars, ‘Stella’ was the highest at 91.6%, followed by ‘My Heart’ (78.3%), ‘IFG-6’ (77.3%), and ‘Hongju Seedless’ (73.2%). As for the flower incidence rate by cultivar, 'Stella' was the highest at 113.5%, and ‘IFG-6’ had a lower flower incidence at 45.3% compared to other cultivars. The diameter of shoots was less than 11.0 ㎜ in the other three cultivars except for ‘Hongju Seedless’, and ‘Hongju Seedless’ was the thickest at 12.5 ㎜ and ‘Stella’ was the thinnest at 9.6 ㎜. The berry weight of 'My Heart' was 11.3 g, heavier than other cultivars, followed by ‘Stella’, ‘IFG-6’ and ‘Hongju Seedless’. Soluble sugar content at harvest time by cultivar was about 19.0˚Bx or higher, with ‘IFG-6’ having the highest level of 20.2˚Bx, followed by ‘My Heart’, ‘Stella’, and ‘Hongju Seedless’. Acidity was the lowest in ‘My Heart’ at 0.39%, followed by ‘IFG-6’, ‘Stella’ and ‘Hongju Seedless’. As for the coloring, in the case of ‘My Heart’, the skin color did not change to red even after the harvest season, therefore the grapes were irregularly colored, so it was judged that the development of cultivation technology to enhance the coloring was necessary.