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首页> 外文会议>International citrus congress >Effects of Differing Deficit Irrigation Treatments on Fruit Quality of Citrus reticulata Blanco
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Effects of Differing Deficit Irrigation Treatments on Fruit Quality of Citrus reticulata Blanco

机译：不同缺陷灌溉治疗对柑橘reticulata blanco水果品质的影响

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' Clemenules' mandarin citrus trees grafted on two rootstocks (' Cleopatra' mandarin and 'Carrizo' citrange) were subjected to three irrigation treatments; the control treatment (100% ETc) , Phase II treatment (non-irrigation during phase II of fruit growth) and Phase M treatment (non irrigation during phase HI of fruit growth). The two drought treatments affected in different ways some fruit quality parameters and these effects were also dependent on the rootstocks. Phase E -stressed fruits had higher TSS and TA than control fruits; the TSS/TA ratio decreased to below an acceptable level, indicating an important delay in the maturation process. This was also observed by the decrease of the a/b ratio relative to control fruits. Phase HI stressed fruits also had higher TSS and TA, but the TSS/TA ratio increased to values similar to those of control fruits. Phase II -stressed fruits from ' Cleopatra' had increased fructose, sucrose and glucose with respect to control fruits. ' Carrizo' trees suffered a high level of stress during this phase, producing an increase of fructose and glucose levels whilst sucrose decreased, suggesting that sucrose hydrolysis contributed to the fruit osmotic adjustment. This reduced the non-reducing/reducing sugars ratio in fruits from ' Carrizo' whereas it increased in fruits from 'Cleopatra'. Phase IIIstressed fruits had increased glucose and sucrose, independent of the rootstock, and the nonreducing/reducing sugars ratio also increased. The total phenolics increased in both drought-stress treatments, with respect to the control, but this increase was higher for Phase II-stressed fruits. However, only Phase II -stressed fruits had a higher ascorbic acid level than control fruits. The juice percentage of Phase II -stressed fruits was decreased with respect to control values. So, the increases of TSS, TA, sugars, ascorbic acid, total phenolics, lycopene and β-carotene found in this treatment could be due to both new synthesis, in response to water stress suffered by the tree, and to the lower fruit water content, since it is in this phase when the highest increase in juice content takes place. However, Phase IIIstressed fruits had a higher juice percentage than control fruits, so their increases of TSS, TA, total phenolics, total sugars and lycopene were due to new synthesis. Phase III stress increased the fruit quality by increasing some quality parameters without alterations of maturation process with respect to control fruits. However, phase II treatment also increased some quality parameters but produced a drastic delay in the maturation process that made them non-commercial.
机译：“Clemenules”柑橘的柑橘树接枝上的两个砧木（“艳后”翻译和‘卡里佐’枳橙）进行3个灌溉处理;与对照处理（100％等），二期治疗和相位中号处理（非灌溉果实生长阶段期间HI）（果实生长的第二阶段在非灌溉）。在不同方式影响了一些水果质量参数，而且这些影响这两个干旱处理也依赖于砧木。 E相-stressed水果具有较高的TSS和TA比对照果实;的TSS / TA比值下降到低于可接受的水平，表明在成熟过程中的重要的延迟。这也通过相对于控制水果a / b比的降低观察到。相HI强调水果也有较高的TSS和TA，但TSS / TA的比例提高到类似的控制水果的值。二期-stressed水果从“埃及艳后”增加了果糖，蔗糖和葡萄糖相对于对照果实。 “卡里佐”树木在此阶段期间遭受的应力的高的水平，同时降低蔗糖生产果糖和葡萄糖水平的增加，这表明蔗糖水解促进了果实渗透调节。这种减小的非还原/还原性糖的比例在从“卡里佐”水果而它从“艳后”水果增加。相IIIstressed水果增加了葡萄糖和蔗糖，独立砧木的，和非还原/还原性糖的比例也增加。总酚两种干旱胁迫处理增加，相对于控制，但这种增加是为二期工程，强调水果高。然而，只有二期-stressed水果比对照果实较高的抗坏血酸水平。第二阶段的果汁百分比-stressed水果是相对于控制值下降。所以，TSS，TA，糖，抗坏血酸，总酚，番茄红素和β胡萝卜素的增加发现这种治疗可能是由于这两种新的合成中，响应于由树遭受水胁迫，并以较低的汁液水内容，因为它是在这个阶段中，当果汁含量最高增幅发生。然而，相IIIstressed水果比对照水果果汁较高比例，所以他们的TSS，TA，总酚的增加，总糖和番茄红素是由于新合成。相III应力通过相对于对照果实没有成熟过程的改变增加一些质量参数增加的果实品质。然而，相II治疗也增加一些质量参数，但产生了成熟过程，使他们的非商业的急剧延迟。

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