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2014 Progress Report -Brief Summaries of NC-140 Rootstock Trials

机译：2014年进度报告-NC-140砧木试验简述

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A 10-year summary of the trial was published in the April edition of the Journal of the American Pomological Society (pub-hort.org/aps/68/v68_n2_a1 .htm). Eleven core rootstocks were planted at all eight locations and an additional 12 rootstocks wereplanted at some locations. Core root-stocks included four industry standards (B.9, M.9 NAKBT337, M.26 EM LA, and M.9 Pajam 2), along with B.10 (formerly called B.62396) from Russia, G.16, G.41, and G.935 from CornelhGeneva, J-TE-H from the Czech Republic, and PiAu 51-4 and PiAu 56-83 from Germany. Some locations also received CG.5179 and G.210 (Cornell-Geneva), JM. 1, 2, 4, 5, 7, 8, and 10 (Japan- Morioka), J-TE-G (Czech), and PiAu 36-2 or PiAu 51- 11 (Germany). B.9 was less vigorous than M.9 NAKBT337 and J-TE-G was less vigorous than B.9. J-TE-G was too dwarfing for most commercial situations. Rootstocks in the M.9 size class included G.16, G.41, G.935, CG.5179, G.210 (formerly known as CG.6210), JM.1 and B.10. All rootstocks in this size class had high yield efficiency (YE), and G.41 and G.935 may be candidates to replace M.9 because trees survived well and had high YE. Rootstocks in the M.26 size class included J-TE-H, G.210, JM.7, JM.8 and PiAu 51-11. J-TE-H was the only rootstock with 100% tree survival at all locations. Cumulative YE was similar for M.26 EMLA and JM.7.1, was slightly high-er for J-TE-H and was highest for G.210. Due to exceptional tree survival and high YE, both J-TE-H and G.210 deserve further evaluation as potential replacements for M.26. Rootstocks more vigorous than M.26 included PiAu 51-4, PiAu 56-83, PiAu 36-2, JM.2, JM.4, JM.5, and JM.10. All of these vigorous rootstocks had lower YE than M.26 EMLA and are probably too vigorous for modern commercial apple orchards. Biennial bearing increased with increasing trunk cross-sectional area at three of the eight locations, so factors-other than rootstock vigor also influenced annual cropping. The data are being used to determine how long a rootstock trial should be continued to determine the eventual size class for a new rootstock.
机译：该试验的10年摘要已发布在4月的《美国Pomological Society杂志》（pub-hort.org/aps/68/v68_n2_a1 .htm）中。在所有八个地点种植了11种核心砧木，在某些地方种植了另外12种砧木。核心根目录包括四个行业标准（B.9，M.9 NAKBT337，M.26 EM LA和M.9 Pajam 2）以及俄罗斯的B.10（以前称为B.62396），G.16 ，CornelhGeneva的G.41和G.935，捷克共和国的J-TE-H，德国的PiAu 51-4和PiAu 56-83。一些地点还收到了JM的CG.5179和G.210（日内瓦康奈尔）。 1、2、4、5、7、8和10（日本-盛冈），J-TE-G（捷克）和PiAu 36-2或PiAu 51-11（德国）。 B.9的活力不如M.9 NAKBT337，J-TE-G的活力不如B.9。对于大多数商业情况，J-TE-G显得太小了。 M.9大小级别的砧木包括G.16，G.41，G.935，CG.5179，G.210（以前称为CG.6210），JM.1和B.10。此大小级别的所有砧木都具有很高的产量效率（YE），并且G.41和G.935可以替代M.9，因为树木可以很好地生存并且具有很高的YE。 M.26尺寸等级的砧木包括J-TE-H，G.210，JM.7，JM.8和PiAu 51-11。 J-TE-H是唯一在所有位置都能100％存活树木的砧木。 M.26 EMLA和JM.7.1的累积YE相似，J-TE-H的累积YE略高，G.210的最高。由于出色的树木存活率和较高的YE，J-TE-H和G.210都应作为M.26的潜在替代品进行进一步评估。比M.26更有生命力的砧木包括PiAu 51-4，PiAu 56-83，PiAu 36-2，JM.2，JM.4，JM.5和JM.10。所有这些旺盛的砧木的YE均低于M.26 EMLA，可能对现代商业性苹果园而言过于旺盛。在八个地点中的三个地点，两年一次的方位角随着树干横截面积的增加而增加，因此除砧木活力以外的其他因素也影响了一年生作物。该数据用于确定砧木试验应持续多长时间，以确定新砧木的最终尺寸等级。

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