• Title, Summary, Keyword: Fugi apple

Search Result 4, Processing Time 0.03 seconds

Estimation of Full Bloom Stage of Apple (Malus domestica Borkh. c. Fugi) in Chungju Area (충주지역에서의 사과 후지 품종의 만개기 추정)

  • 이양수;이정택;심교문;황규홍
    • Korean Journal of Agricultural and Forest Meteorology
    • /
    • v.4 no.2
    • /
    • pp.114-118
    • /
    • 2002
  • This study was conducted to estimate the full bloom stage of the Fugi apple at e in different elevations at Chungju area. The lapse rate of air temperature related to the elevation in Chungiu area was calculated and applicated to estimate the full bloom stage of the Fugi apple cultivar at different elevations. The data far nine levels of elevations at 150, 250, 359, 555, 710 m with the direction of S-W in the Mt. Gyemyong and at 165, 255, 415, 545 m with the direction of N-W in the Mt. Nam were analyzed. The lapse rate range were 0.89$^{\circ}C$ per 100 m elevation in the Mt. Gyemyong and 0.74$^{\circ}C$ in the Mt. Nam respectively. The difference of full bloom stage different elevations was 4 to 5 days per 100 m and its range was from April 29th at 100 m to May 10th at 400 m.

A Study on the post-harvest physiology of Apple fruit, Fuji cultivar during transportation for export (수출용사과 후지품종의 수송 중 과실 내의 생화학적 변화에 관한 연구)

  • Kim, Min
    • Korean Journal of Food Preservation
    • /
    • v.3 no.1
    • /
    • pp.77-82
    • /
    • 1996
  • Most of countries differ from their favors, in Taiwan fruit juice and sweet taste are emphasized while external appearance in Japan. During transportation, movement of the container, fluctuation of temperature, decrease of the fruit freshness and undesirable packing materials tend to decline fruit marketability. For these problems, it is believed that shortening of boarding time by utilization of plate and styro form box for packing, the author believed.

  • PDF

Effects of Subatmospheric Pressure Storage on Ultrastructural Changes in the Chloroplasts of Apple Fruit (사과과실 엽록체의 초미세구조 변화에 미치는 감압저장의 영향)

  • Ha, Young-Sun;Sohn, Tae-Hwa
    • Applied Biological Chemistry
    • /
    • v.28 no.3
    • /
    • pp.174-181
    • /
    • 1985
  • Ultrastructural changes in the chloroplast of apple fruits was examined with Malus Pumila Mill var. Fugi harvested during preclimacteric stage the subatmospheric pressure storage condition at 380mmHg, $20^{\circ}C$. Electron micrographs obtained from the fruits stored at 760mmHg, $20^{\circ}C$ indicated that the initiation of ultrastructural changes is in parallel with the onset of respiratory climacteric. Chloroplast of the apple fruits stored for 25 days is vacuolated and the lamellar system are a little disorganized. Chloroplast of the apple fruits stored for 50 days is showing extensive vacuolation, the lamellar system are completely disorganized and the plasma membrane has pulled away from the cell wall. In the case of subatmospheric presssure storage caused to delay the onset of ultrastructural changes in chloroplast such as vacuolation, disorganization of lamellar system and dispersal of stroma lamella about 2 months. These results suggested that ripening of apple fruits is correlated not only to the activity of respiration but to the involvement of ultrastructural changes in fruit cells. The evidences obtained here led to the conclusion that subatmospheric pressure treatment extends storage life of apple fruits by inhibiting ultrastructural changes of cell organelles in concomitance with respiratory activity.

  • PDF

Pathogen Physiology, Epidemiology and Varietal Resistance in White Rot of Apple (사과 흰빛썩음병백부병(白腐病)의 병원균(病原菌) 생리(生理), 포장(圃場)에서의 전염(傳染) 및 품종저항성(品種抵抗性))

  • Cho, Won-Dae;Kim, Choong-Hoe;Kim, Seung-Chul
    • Korean journal of applied entomology
    • /
    • v.25 no.2
    • /
    • pp.63-70
    • /
    • 1986
  • Severity of incidence of white rot on apple fruit ranged from 5 to 16% and averaged 9% over major apple growing area in 1981. An isolate of Botryosphaeria ribis obtained from rotted apples developed lesions on leaves, branches and fruits of apple, pear, peach and grape in a series of wound inoculation test. B. ribis grew well on both potato sucrose agar and oatmeal agar. The best condition for vegetative growth on these two media was at $25{\sim}30^{\circ}C$ pH 4 and $10{\sim}15%$ sucrose content under light illumination. Rot development on fruit was first observed in the orchard at early August when sugar content in fruit reached 9.0%. Thereafter, number of rotted apples increased as sugar content increased. There was no correlation between the pH of juice of fruit and rot incidence. Infection on fruit began to occur as early as mid-June when young fruits were formed and infections were continued until harvest. When apple fruits were collected at 10-day intervals from the orchard beginning from early June and were wound-inoculated with B. ribis, rot lesion developed regardless of the stage of fruit growth. Incidence of white rot in the orchard was severe on Golden-delicious and Yukou, intermediate on Aoli, Fugi and Indo, and least on Jonathan and Red-delicious.

  • PDF