The aim of this study is to estimate the chilling requirements of various kiwifruit cultivars (Actinidia chinensis) grown in Korea using the Chill Hour, Utah, and Dynamic models. The chilling requirements for ‘Hongyang’ were 702 chilling hours (CH), 694 chilling units (CU), and 39 chilling portions (CP); for ‘Haegum’, 764 CH, 721 CU, and 40 CP; and for ‘Hayward’, 1,026 CH, 762 CU, and 43 CP. Analysis of ASOA weather data from the past five years in ten major kiwifruit- growing regions exhibited a trend toward a later dormancy break. In some areas, chilling requirements were not fully met in certain years, which could lead to delayed bud break and flowering, poor fruit set, lower fruit quality, and reduced yields. This study provides information on the current and future chill levels in cultivation areas and serves as a foundational resource for the future selection of domestic kiwifruit cultivars and the establishment of cultivation strategies.

ABSTRACT
서 론
재료 및 방법
    식물재료
    품종별 재배지 기상자료 수집 및 저온요구도 산출
    수삽 발아 검정 및 휴면 타파 판정
    주요 재배지의 휴면타파 시기의 예측
결과 및 고찰
    키위프루트 휴면타파 저온축적 모델 적용의 품종별 저온요구도 평가
    국내 키위프루트 주요 재배 지역별 저온요구도 충족 시기의예측 및 변화
결 론
적 요
REFERENCES

• 권종현(제주대학교 원예학과) | Jong Hyun Kwon (Dept. of Horticulture, Graduate School, Jeju National University, Jeju 63243, Korea)
• 송관정(제주대학교 원예학과) | Kwan Jeong Song (Dept. of Horticulture, Graduate School, Jeju National University, Jeju 63243, Korea) Corresponding author
• 범혜랑(전라북도 농업기술원 원예과) | Hye Rang Beom (Division of Horticulture, Jeollabuk-do Agricultural Research & Extension Services, Iksan, 54591, Korea)
• 최동근(전북대학교 원예학과) | Dong Geun Choi (Department of Horticulture, Chonbuk National University, Jeonju 561-756, Korea)