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首页> 外文期刊>Acta Horticulturae >The use of 6-benzyladenine to increase same-season branching on one-year-old lateral extension growth of third-leaf apple trees
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The use of 6-benzyladenine to increase same-season branching on one-year-old lateral extension growth of third-leaf apple trees

机译:使用6-苄基腺嘌呤在三叶苹果树的一岁横向延伸生长中增加同季分支

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摘要

In regions with inadequate winter chilling, apple trees are often trunk renewed (removal through a heading cut of all lateral one-year-old shoots on the trunk (leader), leaving a stub) to increase leader growth. Insufficient reproductive buds are therefore developed on such trees, and the subsequent crop is limited to lateral and terminal buds on new one-year-old shoots - thus limiting the crop potential. Plant growth regulators are used as summer foliar applications to induce sylleptic development of tree leaders in nurseries, but not on one-year-old shoots in orchards to increase crop potential. Field trials were conducted on 3rd leaf'Brookfield Gala' and 'Golden Delicious' on MM109 in 2014 and repeated on a similar orchard in 2015. Trials were conducted in the Elgin region, South Africa (34.1486°S; 19.0428°E). Both seasons, the effect of a single foliar application of 950 mg L1 6-benzyladenine to the lower tree canopy on December 16 was evaluated. The number and length of lateral spurs or short shoots branching from the new shoots as well as the percentage lateral shoots with spurs/short shoots increased significantly during both seasons. In 2016, the subsequent crop increased significantly although the number and length of lateral shoots, leader length, leader diameter and trunk diameter did not differ in the two seasons.
机译:在冬季寒冷不足的地区,苹果树经常更新躯干(通过在后备箱(领导者)上的所有侧向一岁射击的排序射击,留下一个存根)来增加领导者的增长。因此,在这种树上开发了生殖芽不足,随后的作物仅限于新的一岁芽上的横向和末端芽 - 从而限制了作物潜力。植物生长调节剂被用作夏季叶面应用,以诱导苗圃中的树皮的西门面发展,但不是在果园的一岁芽上增加作物潜力。现场试验在2014年的MM109上的第三片Brookfield Gala'和“金色美味”进行,并于2015年重复在类似的果园上。试验在南非的Elgin地区进行(34.1486°S; 19.0428°E)。两种季节,评估了12月16日在12月16日施用950mg L1 6-苄基腺嘌呤的单一叶面的效果。在新芽中分支的横向马刺或短射击的数量和长度以及在两个季节期间与马刺/短芽的百分比射击百分比显着增加。 2016年,尽管横向射击,领导长度,领导直径和干线直径的数量和长度在两个季节没有不同的情况下显着增加。

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