초록 ▼

Ⅲ. 연구개발의 내용 및 범위
「만감류 조기성원화 및 저장기술 개발」 연구는 첫째, ‘감평’, ‘세또미’, ‘에히메28호’, ‘남진해’ 품종에 대한 생육 및 품질특성을 조사하고 현장애로 기술을 조사하여, 품종별 재배적 특성을 정리하였다. 둘째, ‘감평’ 품종을 재배를 위해 농가들이 대부분 고접에 의한 품종갱신을 하는 점을 감안하여 고접수 가지유인 방법, 묘목 육성 형태에 따른 생육과 과실특성 등을 조사하여 조기성원화 방법을 정립하였다. 셋째, 수확 후 출하시기 분산 등을 위하여 품종별로 저장성을 검토하였다.
「만감류 감평

Ⅲ. 연구개발의 내용 및 범위
「만감류 조기성원화 및 저장기술 개발」 연구는 첫째, ‘감평’, ‘세또미’, ‘에히메28호’, ‘남진해’ 품종에 대한 생육 및 품질특성을 조사하고 현장애로 기술을 조사하여, 품종별 재배적 특성을 정리하였다. 둘째, ‘감평’ 품종을 재배를 위해 농가들이 대부분 고접에 의한 품종갱신을 하는 점을 감안하여 고접수 가지유인 방법, 묘목 육성 형태에 따른 생육과 과실특성 등을 조사하여 조기성원화 방법을 정립하였다. 셋째, 수확 후 출하시기 분산 등을 위하여 품종별로 저장성을 검토하였다.
「만감류 감평 품질향상 및 안정생산 기술개발」 연구는 토양수분, 적정 착과량과 적과시기, 생육기별 관리온도, 과피보호를 위한 봉지피복 효과에 대하여 검토하였다. 첫째, 토양수분 시험은 토양수분 함량을 일정하기 한 것과 토양수분이 변화될 때의 열과 발생 정도, 과실 생육 및 품질에 대하여 조사하였다. 둘째, 적과 시기는 5월 하순(꽃따기), 6월 하순, 7월 하순, 8월 하순 4처리를 두었으며 착과량은 150:1, 120:1, 100:1, 80:1로 구분하여 실시하였다. 셋째, 생육기별 관리온도는 생리낙과기와 과실비대기에 고온, 일반 관리 2처리를 두고 열과발생, 과실품질 변화 등을 조사하였다. 넷째, 과피보호를 위한 봉지피복 효과는 한라봉전용봉지, 이중노루지, 차광망 피복, 무피복 처리에서 과실품질과 과피색 변화를 비교하였다.

Abstract ▼

Establishment of Early Mature Orchard and Development of Stable Production of High Quality Fruit in Several Late Maturing Citrus Cultivars
Several newly introduced late-ripening citrus varieties were investigated in non-heated plastic film house. The harvest time of ‘Hehime28go’ ‘Kanpei’, Setomi’

Establishment of Early Mature Orchard and Development of Stable Production of High Quality Fruit in Several Late Maturing Citrus Cultivars
Several newly introduced late-ripening citrus varieties were investigated in non-heated plastic film house. The harvest time of ‘Hehime28go’ ‘Kanpei’, Setomi’ and ‘Natsumi’ was from middle to last of December, from last of January to early of February, from middle to last of February, and from last of April to middle of May respectively. The soluble solid contents(SSC) of ‘Setomi’ was the highest among them. But the eating quality was the best in ‘Kanpei’ fruit because it has plenty of juice, soft flesh and proper SSC and acidity. As to ‘Natsumi’ which is harvested on May, SSC was very high and eating quality was good.
As the result of comparing of training method in ‘Kanpei’ trees which was top grafted, the combination treatment of horizontal training and pinching makes more growth and more yield at 14.8kg than conventional practices of only pinching. As for the results of raising type in ‘Kanpei’ trees, the canopy volume was high in top grafted trees, in virus free seedlings, and in non virus free seedlings in the order named.
The storability of foresaid varieties was also surveyed. The rate of weight decrease of ‘Kanpei’, Setomi’ and ‘Natsumi’ fruits during storage was the lowest when their fruits was stored in vinyl bag. But the eating quality of ’Kanpei’ fruits declined very rapidly, so we recommend that they should not store over 30 days.
The occurrence of accumulative fruit splitting were 5.0%, 9.0%, and 12.9% at the different soil moisture levels with 50∼60%(sufficient), 30∼40%(normal), and below 20∼30%(insufficient) based on volumetric water content (VWC), respectively and fruit splitting decreased with the increase of soil moisture level. As VWC declined, fruit shape index based on the ratio of diameter to length increased, which resulted in higher fruit splitting. There were no significant differences in fruit growth and quality except fruit weight at harvesting time among the soil water treatments. Fruit splitting were increased When the soil moisture were change from insufficient to normal and sufficient quickly.
Treatments flower- or fruit-thinned in late May (flower thinning), late June, late July, and late August and not fruit-thinned resulted in 3.2%, 1.1%, 3.0%, 7.5%, and 19.2% of accumulative fruit splitting, respectively and fruit splitting was lower as flower or fruit thinning time earlier. Fruit splitting decreased and peel was thicker as flower or fruit thinning was earlier. The highest rate of fruit growth was obtained from the treatment flower-thinned in late May and fruit growth rate was similar from the treatments fruit-thinned in late June, late July, and late August and was lowest in non-fruit thinning. As flower or fruit thinning time was earlier, fruit diameter, length, and weight was higher, but soluble solids and acidity were similar from the treatments of flower or fruit thinning time except for non-thinning. Lower fruiting load by fruit thinning resulted in lower fruit splitting and peak time and accumulative fruit splitting rate varied depending on the year. Above all, the situation with dryness from late July to early August and heavy rainfall thereafter promoted fruit splitting. To reduce the fruit splitting and alternative bearing, fruiting load with the ratio of leaf to fruit at 120:1 or less was desirable.

목차 Contents

• 표지 ... 1
• 제출문 ... 2
• 요약문 ... 3
• SUMMARY(영문요약문) ... 7
• 목차 ... 9
• 제1장 서론 ... 10
• 제1절 연구개발의 목적 ... 10
• 제2절 연구개발의 필요성 ... 10
• 제3절 연구개발의 범위 ... 11
• 제4절 연구개발의 추진 체계 ... 12
• 제2장 국내외 기술개발 현황 ... 13
• 제1절 국내 기술개발 현황 ... 13
• 제2절 국외 기술개발 현황 ... 13
• 제3절 국내·외 연구현황 비교 ... 17
• 제4절 연구결과의 기술 수준 ... 18
• 제3장 연구개발수행 내용 및 결과 ... 20
• 제1절 연구내용 및 방법 ... 20
• 제2절 연구결과 및 고찰 ... 26
• 제4장 연구개발목표 달성도 및 대외기여도 ... 64
• 제1절 목표대비 달성도 ... 64
• 제2절 정량적 성과 ... 65
• 제5장 연구개발결과의 활용계획 ... 66
• 제6장 연구개발과정에서 수집한 해외과학기술정보 ... 67
• 제1절 네블오렌지의 이차과 ... 67
• 제2절 네블오렌지의 배꼽 형성관련 인자 ... 68
• 제7장 기타 중요 변동사항 ... 71
• 제1절 만감류 조기성원화 및 저장기술 개발 ... 71
• 제2절 만감류 ‘감평’ 품질향상 및 안정생산 기술 개발 ... 71
• 제8장 국가과학기술종합정보시스템에 등록한 연구장비 현황 ... 72
• 제9장 참고문헌 ... 73
• <참고> 주요 연구성과 요약 ... 77