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首页> 外文期刊>The Journal of Horticultural Science & Biotechnology >Reduction in 'Marsh' grapefruit tree size infected with citrus tristeza virus populations
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Reduction in 'Marsh' grapefruit tree size infected with citrus tristeza virus populations

机译：减少了柑橘柑橘杆菌病毒种群感染的“沼泽”葡萄柚树的大小

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摘要

'Marsh' grapefruit trees on 'Troyer' citrange rootstock were bud-inoculated with different populations of citrus tristeza virus (CTV) prior to planting in the field. Selected CTV populations GFMS 2, GFMS 10, GFMS 12, GFMS 19, GFMS 25, GFMS 27 and GFMS 35, free of citrus viroids, were used for inoculation. A severe population (GFSS 1) and plants left virus-free served as control. Tree size, production, fruit size and tree health were determined. Fifteen years after planting, canopy volumes of trees with three populations, GFMS 2, GFMS 19, and GFMS 25, were significantly smaller than those of the control trees and trees with populations GFMS 10, GFMS 12, and GFMS 35. Trees with population GFMS 19 had a larger diameter than those with populations GFMS 2 and GFMS 25 and together with the slightly higher yield efficiency of GFMS 19 trees, this resulted in a cumulative yield equal to that of the control and the GFMS 12 trees. Considering fruit size and their value, the performance of trees with population GFMS 19 equalled that of the larger trees. Tree health was also similar, making this population suitable for use in high density plantings. A projection was made which showed that the production and crop value of trees with population GFMS 19 were similar to those of trees with populations GFMS 10, GFMS 12 and GFMS 35. However, benefits such as easier and better spray application and easier harvesting can increase profits when trees with population GFMS 19 are palanted. The cumulative yield, crop value and tree health where populations GFMS 2 and GFMS 25 were inoculated were similar to those of the severe population which had an unacceptable crop. However, decline and reduction in fruit size of the trees with the severe population were more drastic than those of trees with population GFMS 2.
机译：在“ Troyer”柑桔砧木上的“ Marsh”葡萄柚树上播种前，先对其接种了不同种群的Tristeza柑橘病毒（CTV）。所选择的CTV种群中不含柑橘类病毒的GFMS 2，GFMS 10，GFMS 12，GFMS 19，GFMS 25，GFMS 27和GFMS 35用于接种。大量种群（GFSS 1）和无病毒的植物作为对照。确定树木的大小，产量，果实的大小和树木的健康状况。种植15年后，具有三个种群GFMS 2，GFMS 19和GFMS 25的树木的冠层体积显着小于对照树和具有GFMS 10，GFMS 12和GFMS 35的树木的树冠体积。与GFMS 2和GFMS 25的种群相比，19的直径更大，并且GFMS 19的树的收获效率略高，这导致累积产量等于对照和GFMS 12的树。考虑到果实大小及其价值，GFMS 19种群的树木的表现与较大树木的表现相同。树木的健康状况也相似，因此该种群适合用于高密度种植。进行了一项预测，显示GFMS 19种群的树木的产量和作物价值与GFMS 10，GFMS 12和GFMS 35种群的树木的产量和作物价值相似。但是，诸如喷洒更容易，喷洒更容易，收割更容易等好处可以增加。当种群数量为GFMS 19的树木被砍伐时获利。接种了GFMS 2和GFMS 25种群的累计产量，作物价值和树木健康状况与作物不合格的严重种群的累积产量，作物价值和树木健康状况相似。但是，人口众多的树木的果实大小的下降和减小比人口GFMS 2的树木更大。

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