논문 상세보기
pp.50-55
본 시험은 ‘추황배’ 과실에 봉지 종류를 달리 하였을 때 과실품질과 과피흑변 및 가루깍지벌레 발생 변화를 분석하기 위하여 수행되었다.
1. 농가 조사에서 신문지외지/흑색내지로 이중괘대를 한 과실이 13.2%의 과피흑변과가 발생하였고, 신문지외지/롤내지가12.3%, 백색외지/황색내지가 7.2%의 과피흑변발생이 관찰되었다.
2. 투기도와 투습도는 신문지외지/흑색내지가 가장 불량하였고, 백색외지/백색내지가 흡광도, 투기도, 투습도에서 양호한것으로 나타났다.
3. 괘대봉지에 따른 과실품질은 과피의 적색을 나타내는 a값을 제외하고는 별다른 차이가 관찰되지 않았다.
4. 수확 후 과피흑변과와 가루까지벌레 발생률을 조사한 결과, 백색외지/백색내지에서 가장 낮았고, 백색외지/황색내지가다음으로 낮았다. 반면에 백색겉면외지-흑색안면외지/황색내지는 수확후와 저온저장 14일, 21일 후에도 과피흑변과 발생이꾸준히 높게 나타났다.
5. 과피내 폴리페놀함량이 높을수록 과피흑변이 증가하는 것으로 관찰되었다.
This study was conducted to evaluate the fruit quality and occurrence of fruit skin blackening and comstock mealybug of 'Chuhwangbae' pears (Pyrus pyrifolia Nakaii) bagged with differentdouble-paper bags. Based on the several farming surveys, fruits bagged with the double bags of newspaper-outer and black-inner parts had the highest skin blackening (13.2%), followed by newspaper-outer and roll-inner bags (12.3%) and white-outer and yellow-inner bags (7.2%), respectively. The air and water permeability of the double bags were the poorest for the newspaper-outer and black-inner bags, whereas being good for white-outer and white-inner bags. The fruit quality was not significantly different among the bag types, except for the hunter value a indicating red coloration of fruit skin. Occurrence of fruit skin blackening and mealybug (Pseudococcus comstocki (Kuwana)) at the harvesting time were the least for the white-outer and white-inner bags, followed by white-outer and the yellow-inner bags, while the double bags with white-outer and black-inner of outer bag and yellow inner bag maintained higher fruit skin blackening at fruit harvest as well as 14 and 21 days after cold storage. Fruit skin blackening increased as polyphenol content in fruit peel increased.
