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首页> 外文期刊>Acta Horticulturae >The timing of first ratoon sucker selection using tissue culture banana plants.
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The timing of first ratoon sucker selection using tissue culture banana plants.

机译：使用组织培养香蕉植株选择第一株再生性吸盘的时机。

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A randomized block trial was planted to determine the optimum first ratoon (R1) sucker selection stage with tissue cultured banana plants. Treatments comprised four different R1 selection times, namely 4, 6, 9 and 11 months after planting, which were applied using the sectoral sucker selection technique. This technique was chosen since it enabled R1 suckers of the same age to be suppressed and then selected at different development stages of the mother plant, leading to homogenous R1 suckers in terms of timing, size and placement on the plantation marching line. Under the prevailing conditions of drought which could have influenced the trial, results show that the stage of R1 selection mainly influenced cycle time rather than bunch mass. A maximumyield increase of 13.3 t/ha/year (22%) with the 4-month selection compared with the 11-month selection was measured in the R1 cycle. However, in the R2 the opposite occurred, with eleven month resulting in 6.1 t ha-1 year-1 (11%) higher yield compared with 4-month selection. Over three crop cycles, investigations showed that stage of R1 sucker selection is relatively unimportant since no significant yield advantages were measured, when selecting the R1 sucker sectorally at either 4, 6, 9 or 11 months after planting. The aim of sucker selection should therefore be to establish a healthy and vigorous R1 sucker that is positioned in the direction of selection and homogenous in size throughout the plantation. The best way to address these aims is by usingthe sectoral sucker selection method.
机译：种植了一项随机分组试验，以确定组织培养的香蕉植物的最佳第一再生区（R1）抽穗选择阶段。处理包括四个不同的R1选择时间，即种植后的4、6、9和11个月，使用扇形吸盘选择技术进行处理。选择该技术是因为它可以抑制相同年龄的R1抽油烟，然后在母本植物的不同发育阶段进行选择，从而在种植时间，大小和在种植行进线上的位置方面均产生了均匀的R1抽油烟。结果表明，在干旱可能影响试验的普遍条件下，R1的选择阶段主要影响周期时间，而不是束质量。在R1周期中，与11个月的选择相比，4个月的选择最大产量增加了13.3吨/公顷/年（22％）。然而，在R2中则相反，与4个月选择相比，11个月的单产提高了6.1 t ha-1 year-1（11％）。在三个作物周期中，研究表明，在种植后的4、6、9或11个月内分段选择R1抽er时，R1抽er的选择阶段相对不重要，因为没有测量到明显的增产优势。因此，抽油杆选择的目的应该是建立一个健康而有活力的R1抽油杆，该杆沿选择的方向放置，并且在整个种植园中大小均一。解决这些目标的最佳方法是使用扇形吸盘选择方法。

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