INTERACTIONS BETWEEN DEVELOPING CITRUS-FRUITS AND THEIR SUPPORTIVE VASCULAR SYSTEM
INTERACTIONS BETWEEN DEVELOPING CITRUS-FRUITS AND THEIR SUPPORTIVE VASCULAR SYSTEM
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DOI：
10.1006/anbo.1995.1144
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发表时间：
1995-12-01
期刊：
影响因子：
4.2
通讯作者：
GOLDSCHMIDT, EE
中科院分区：
文献类型：
--
作者：
BUSTAN, A;ERNER, Y;GOLDSCHMIDT, EE
发育中的果实是一个强大的库，需要大量的同化物。葡萄柚（Cia us Paradisi Macf.，变种Marsh无籽）果实大小与其花梗横截面积（CSA）之间存在着密切的相互作用。果实的存在似乎决定了果实所在枝条内维管组织的发育模式。花梗通常在果实线性生长期之前终止其直径生长。疏果（90%）和树干环剥，以尽量减少碳水化合物的限制，结果在果实生长速度和花梗CSA显着增加。部分环剥花梗会导致果实生长的短暂下降。通过现有的血管途径的特定质量运输（SMT）的增加是立即的反应，由于瞬时激增的碳水化合物供应到个别水果。然而，新维管组织的快速发育是果实生长长期增强或恢复的主要因素，这表明运输能力确实存在限制。(C)1995 Annals of Botany公司
The developing fruit is a strong sink, which demands large amounts of assimilates. A correlation between grapefruit (Cia us Paradisi Macf., var. Marsh seedless) fruit size and its pedicel cross sectional area (CSA) can be demonstrated, suggesting a close interaction between them. The presence of fruits seems to determine the developmental pattern of the vascular tissues within the branches on which the fruits are borne.The pedicel normally terminates its diametric growth prior to the linear phase of fruit growth. Fruit thinning (90 %) and trunk girdling, performed in order to minimize carbohydrate limitations, result in dramatic increases in fruit growth rate and pedicel CSA. Partial girdling of the pedicel causes a transient decrease in fruit growth. An increase in specific mass transport (SMT) through the existing vascular routes is the immediate response, due to the instantaneous upsurge of carbohydrate supply to individual fruit. Nevertheless, the rapid development of new vascular tissues has been the major factor responsible for the long term enhancement, or recovery, of fruit growth, suggesting that limitation in transport capacity does occur.The cause and effect relationships between fruit and vascular development are discussed. (C) 1995 Annals of Botany Company