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조기낙엽에 따른 참다래(골드러쉬) 무착과 유목 액아의 발아와 착화 / 곽용범 ; 김홍림 ; 채원병 ; 이재한 ; 이응호 ; 김진국 ; 이용복 1

Abstract 1

서론 2

재료 및 방법 2

공시재료 2

적엽처리 3

신초 액아의 당해 연도 재발아 및 익년 발아와 착화 조사 3

통계분석 3

결과 및 고찰 3

당해 연도 중·후반 액아의 휴면진입과 재발아 3

익년 발아와 착화 3

요약 5

Acknowledgment 5

References 6

초록보기

BACKGROUND: Kiwifruit, which was introduced to Korea in late 1970s, is a warm-temperate fruit tree, whose leaves are easily damaged by wind because of their large size. To produce high quality fruits, efficient windbreak is necessary to protect leaves until harvest. In Korea, typhoons from July onwards usually influence the production of kiwifruit. Damages from typhoons include low fruit quality in the current year and low flowering ratio the following year. This study was conducted to investigate the effect of early defoliation of kiwifruit vines from July to October on the regrowth of shoot axillary buds the current year and bud break and flowering the following year. METHODS AND RESULTS: Scions of kiwifruit cultivar ‘Goldrush’ were veneer grafted onto five‐year‐old Actinidia deliciosa rootstocks, planted in Wagner pots (13L) and grown in a rain shelter. Kiwifruit leaves in the proximity of leaf stalk were cut by lopping shears to simulate mechanical damage from typhoon since only leaf stalks were left when kiwifruit vines were damaged by typhoons. Kiwifruit vines were defoliated from July 15 to October 14 with one monthintervals and degrees of defoliation were 0, 25, 50, 75 and 100%. All experiments were conducted in the rain shelter and replicated at least five times. Defoliation in July 15resulted in a high regrowth ratio of 20‐40% regardless of degree of defoliation but that in August 16 showed only 5.8% of regrowth ratio in the no defoliation treatment;however, more than 25% of defoliation in August 16showed 17‐23% of regrowth ratio. In September 15,regrowth ratio decreased further to less than 10% in all treatments and no regrowth was observed in October 14. Percent bud break of all defoliation treatments were not significant in comparison to 64.7% in no defoliation except for 42.1% and 42.9% in 100% defoliation in July 15 and August 16, respectively. Floral shoot in the no defoliation treatment was 70.2% and defoliation of 50% or less resulted in the same or increased floral shoot ratio in July 15, August 16, and September 15; however, defoliation in October 14showed no difference in all treatments. In flower number per floral shoot, 2‐3 flowers appeared in no defoliation and only 1 flower was observed when the vines were defoliated more than 50% in July 15 and September 15. In October 14,contrary to the floral shoot ratio, flower number decreased with increased defoliation. CONCLUSION(S): Therefore, it is suggested that dormancy of ‘Goldrush’ axillary buds, was started in August and completed in October. The effect of defoliation on bud break of axillary buds the following year was insignificant, except for 100% defoliation in July 15 and August 16. From July 15 to September 15, floral bud ratio was significantly reduced when more than 50% of leaves were defoliated compared to no defoliation. Also, the number of flowers per flower‐bearing shoot the following year decreased by less than 50% when compared to no defoliation, and this decrease was more prominent in September 15 than July 15 and August 16.

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참고문헌 (18건) : 자료제공( 네이버학술정보 )

참고문헌 목록에 대한 테이블로 번호, 참고문헌, 국회도서관 소장유무로 구성되어 있습니다.
번호 참고문헌 국회도서관 소장유무
1 Flower Development of the Chinese Gooseberry ( Actinidia chinensis Planch.) 네이버 미소장
2 Cheng, L. and Fuchigami, L.H., 2002. Growth of young apple trees in relation to reserve nitrogen and carbohydrates, Tree Physiol. 22, 1297‐1303. 미소장
3 적과가 조기 적엽한 감나무의 과실특성과 저장양분 축적에 미치는 영향 네이버 미소장
4 Ferguson, A.R., 1990. Stem, branches, leaves and roots of the kiwifruit vine, in: Warrington, I.J., Weston, G.C. (Eds.), Kiwifruit: Science and management, Ray Richards Publ. and New Zealand Soc. Hort. Sci., Auckland, New Zealand, pp. 58‐70. 미소장
5 Hopping, M.E., 1990. Floral biology, pollination, and fruit set, in: Warrington, I.J., Weston, G.C. (Eds.), Kiwifruit: Science and management, Ray Richards Publ. and New Zealand Soc. Hort. Sci., Auckland, New Zealand, pp. 71‐96. 미소장
6 Kang, S.M., Ko, K.C., 1976. A study on cold hardiness, flowering and fruit bearing in ‘Okubo’ peach trees (Prunus persica) as affected by defoliation, J. Kor. Soc. Hort. Sci. 17, 1‐11. 미소장
7 Kwack, Y.B., Park, Y.S., 2007. Kiwifruit, in: Lee, J.M., Choi, G.W., Janick, J. (Eds.), Horticulture in Korea, Kor. Soc. Hort. Sci. Press, Suwon, Korea, pp. 244‐249 미소장
8 Effects of winter temperatures on flower development in two clones of kiwifruit ( Actinidia deliciosa (A. Chev.) C.F. Liang et A.R. Ferguson) 네이버 미소장
9 Lloyd, D.A., Couvillon, G.A., 1974. Effects of the date of defoliation on flowers and leaf bud development in peach (Prunus persica L. Datsch), J. Am. Soc. Hort. Sci. 99, 514‐517. 미소장
10 Carbohydrate Reserves, Translocation, and Storage in Woody Plant Roots 네이버 미소장
11 Bud Respiration and Dormancy of Kiwifruit (Actinidia deliciosa) 네이버 미소장
12 Oliveira, C.M., Priestley, C.A., 1988. Carbohydrate reserves in deciduous fruit trees, Hort. Rev. 10, 403-430. 미소장
13 Initiation and development of pistillate flowers in Actinidia chinensis 네이버 미소장
14 Snowball, A.M., Walton, E.F., 1992. Flowering in kiwfiruit. New Zealand Kiwifruit Special Publication No.4, pp. 25‐28. 미소장
15 Titus, J.S., Kang, S.M., 1982. Nitrogen metabolism, translocation, and recycling in apple trees, Hort. Rev. 4, 204-246. 미소장
16 Tromp, J., 1983. Nutrient reserves in roots of fruit trees, in particular carbohydrates and nitrogen, Plant Soil 71, 401-413. 미소장
17 Worley, R.E., 1979a. Pecan yield, quality, nutlet set and spring growth as a response to time of fall defoliation, J. Am. Soc. Hort. Sci. 104, 192‐194. 미소장
18 Worley, R.E., 1979b. Fall defoliation date and seasonal carbohydrate concentration of pecan wood tissues, J. Am. Soc. Hort. Sci. 104, 195‐199. 미소장

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