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학술저널
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한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY JOURNAL OF THE KOREAN SOCIETY FOR HORTICULTURAL SCIENCE Vol.46 No.5
발행연도
2005.10
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300 - 304 (5page)

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The patterns of C¹⁴ carbohydrate translocation and distribution from the source leaf to various plant parts in watermelon grown in the greenhouse and field were investigated. Seedling-grown plants were pruned to two branches with one carrying a fruit. When leaves at four different positions (on fruit-bearing node, on the 5th node above and below the fruit-bearing node, and on the 5th node from the base of the non-fruit-bearing stem) were exposed to ¹⁴CO₂, the distribution of C¹⁴ compounds to different parts (fruit, stem, leaf, and root) of the plant varied. In all treatments, the fruit was the strongest sink, followed by the stem, leaf, and root. The highest percentage of C¹⁴ photoassimilates was translocated out of the source when the leaf born on the fruit-bearing node was exposed to ¹⁴CO₂ in both greenhouse- and field-grown plants. Translocation of C¹⁴ compounds from the leaves on the 5th node or above and below the first fruit-carrying node was similar. Only 29% of C¹⁴ was translocated from the source leaf born on the 5th node of the non-fruit bearing branch in the greenhouse, as compared to more than 46% of the C¹⁴ from other source leaves. Accumulation of C¹⁴ in the root tissues was greatest when source leaves were born on the non-fruit bearing branch. In general, field-grown plants had a larger proportion of the C¹⁴ translocated as compared to greenhouse-grown plants.
#C¹⁴ labeling #photoassimilate #photosynthate partitioning

목차

Abstract
Introduction
Materials and Methods
Results and Discussion
Acknowledgement
Literature Cited

참고문헌 (15)

참고문헌 신청
[학술지(정기간행물)] - / 1997 / Effects of fruit removal and pinching on the translocation and partition of photoassimilates in the cucumber 39 : 1 ~ 7 google schola [학술지(정기간행물)] - / 1983189-192 / Movement of photosynthates in muskmelon plants google schola [학술지(정기간행물)] - / 1978 / Effects of developing fruits on production and translocation of 14C-labelled assimilates in cucumber 13 : 545 ~ 547 google schola [학술지(정기간행물)] - / 1989 / and function of roots in vegetables google schola [학술지(정기간행물)] - / 1993 / Regulation of the expression of rbcS and other photosynthetic genes by carbohydrates A mechanism for the 'sink regulation' of photosynthesis : 817 ~ 828 google schola

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