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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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논문 기본 정보

자료유형
학술저널
저자정보
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한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY Vol.50 No.6
발행연도
2009.12
수록면
481 - 486 (6page)

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초록· 키워드

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The effects of different leaf to fruit ratios, summer pruning time, and girdling on quantitative and qualitative characteristics of ‘Hayward’ kiwifruit were examined. On each vine, four uniform canes were selected and by pruning their fruiting laterals, leaf to fruit ratio was adjusted and maintained at 1:1, 2:1, 3:1, or 4:1. In control treatment, these selected canes were left intact without topping and removing any lateral growth. Half of the selected canes were girdled by removing a 5 mm strip of bark around the base of each cane, while the other half were left intact. Leaf to fruit adjustment and girdling were imposed 2 weeks after petal fall. To show how pruning time can affect fruit characteristics of the four mentioned selected canes, other canes and their laterals in each vine were pruned early (similar to selected canes) or late (in late summer) (vine general pruning methods A and B, respectively). In both methods, pruning manner was in accordance with common practice in Persian commercial orchards (heading cuts were performed after 3-4 leaves distal to the latest fruit). Finally, fruits of selected canes were harvested and analyzed. Results indicated the necessity of summer pruning performance to obtain fruits with higher quality. The importance of total leaf numbers of laterals in each cane as carbohydrate suppliers for fruits in order to support potential fruit growth was proved. Also, dependence of fruit growth in each cane on carbohydrate supply of other canes was detected. In pruned vines in method A (early summer pruned and as a result having light canopies with optimum light penetration) on girdled experimental canes, minimum leaf to fruit ratio that was required to achieve significant changes in fruit quantitative characteristics compared with control, was 1:1 for width and weight and 2:1 for length and volume. The positive effect of girdling on fruit quantitative characteristics via improving the available photosynthates supply to developing fruits was confirmed. Smaller responses of fruit growth to increasing the leaf to fruit ratios on non-girdled canes due to competition for photosynthate from other sinks, was observed. In pruned vines in method A (better canopy conditions), girdling performance combined with 3:1 and 4:1 leaf to fruit ratios resulted in higher vitamin C and total soluble solids contents, respectively. The positive effect of on time (early) summer pruning on fruit characteristics was proved.
#Actinidia deliciosa #fruit characteristics #photosynthesis #sink power

목차

Abstract
Introduction
Materials and Methods
Results and Discussion
Conclusion
Acknowledgements
Literature Cited

참고문헌 (22)

참고문헌 신청
1. [학술지(정기간행물)] - Agusti, M / 1998 / Effects of ringing branches on fruit size and maturity of peach and nectarine cultivars / J. Hort. Sci. Biotechnol 73 : 537 ~ 540 google schola 2. [학술지(정기간행물)] - Agusti, M / 1992 / Effects of girdling on alternate bearing in citrus / J. Hort. Sci. 67 : 203 ~ 210 google schola 3. [학술지(정기간행물)] - Antognozzi, E / 1993 / Effects of CPPU (cytokinin) on kiwifruit productivity / Acta Hort 329 : 150 ~ 152 google schola 4. [학술지(정기간행물)] - Antognozzi, E / 1997 / Effect of CPPU (cytokinin) treatments on fruit anatomical structure and quality in Actinidia deliciosa / Acta Hort. 444 : 459 ~ 465 google schola 5. [학술지(정기간행물)] - Biasi, R / 1993 / Light influences on kiwifruit (Actinidia deliciosa) quality / Acta Hort 379 : 245 ~ 251 google schola

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