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首页> 外文期刊>Russian Journal of Plant Physiology >The Fruit Dropping Characters of Sweet Cherry and Its Interior Causes in Insufficient Chilling Zone
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The Fruit Dropping Characters of Sweet Cherry and Its Interior Causes in Insufficient Chilling Zone

机译：甜樱桃的水果滴眼特征及其内部原因在不足的寒冷区

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摘要

Attempts had been made to provide evidences insight into the pattern and physiological mechanism of sweet cherry fruit dropping. However, the fruit abscission pattern and mechanism underlying the heavy fruit dropping in insufficient chilling regions, especially the roles of interior factors including carbohydrates and hormones in abnormal fruit dropping, has not yet been better understood so far. Currently, four five-year-old sweet cherry (Prunus avium L.) cultivars, i.e., 'Santina', 'Brooks', 'Sparkerry' and 'Black Pearl', which were grown in Weining County (104.28 degrees E, 26.86 degrees N), Guizhou province of China, were used as materials to elucidate the physiological fruit abscission pattern of sweet cherry and the chief interior causes for the heavy fruit dropping in insufficient chilling region of China. It was explicated that the abscission pattern of sweet cherry fruit somewhat varied among the cultivars in a low chilling region. Higher rate of pollen germination and longer polar axis length was proved to be remarkably beneficial to fruit development. A comparative anatomic dissection of fruit stalk between the retention and dropped fruit elaborated that there is obvious difference in the microstructure with the progress of fruit development. The discrepancy was mostly showed by the cell space of abscission zone tissues for the dropped fruit enlarged gradually and was remarkably larger than that of the retention ones. Furthermore, the imbalance of endogenous hormones in fruit is a crucial trigger for fruit dropping with the progress of fruit development, particularly the active ZR, GA, as well as IAA levels in fruit are positively correlated to fruit setting, conversely, ABA played a negative role in fruit retention. Moreover, carbohydrate contents in retention fruit were considerably higher than that of the dropped ones during the fruit development, however, the contents of glucose and fructose in dropped fruit did not reach the required threshold which was possibly a vital cause leading to fruit abscission.
机译：已经尝试提供证据洞察甜樱桃果实滴的模式和生理机制。然而，到目前为止还没有更好地理解，果实脱落区滴落在不足的冷却区域中的重度水果滴下碎片，尤其是内部因素在内的内部因素的作用，尚未更好地理解。目前，四名五岁的甜樱桃（Prunus Avium L.）栽培品种，即'Santina'，'Brooks'，'Sparkerry'和'黑珍珠'，在威灵县种植（104.28度，26.86度n）中国贵州省，被用作材料，以阐明甜樱桃的生理果实脱落模式，以及中国不足的浓郁地区的繁重水果滴的主要内部原因。据阐述了甜樱桃果实的脱落模式在低冷却区的栽培品种中有些不同。较高的花粉萌发率和较长的极性轴长度被证明是对水果发育的显着有益。水果秸秆之间的比较解剖学解剖胚胎果实阐述了果实发育过程中的微观结构存在明显差异。差异大部分是由脱落区组织的细胞空间逐渐扩大的脱落区组织的细胞空间显示，并且显着大于保留物的果实。此外，内源性激素在水果中的内源激素的不平衡是水果发育的进展，特别是活性Zr，Ga，以及果实的IAA水平与果实呈正相关，相反地，ABA发挥了负面的在果实保留中的作用。此外，保留果实中的碳水化合物含量远高于水果发育过程中的掉滴的含量，然而，葡萄糖和果糖中的果实含量没有达到所需的阈值，这可能是导致果实脱落的重要原因。

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