| 邢利博,张晓云,宋晓敏,宋春晖,韩明玉,赵彩平,李高潮.PB0喷施对矮化富士幼树成花及碳水化合物积累的影响[J].干旱地区农业研究,2013,31(3):118~126 |
| PB0喷施对矮化富士幼树成花及碳水化合物积累的影响 |
| Effects of spraying PBO on flowering rate and carbohydrate accumulation of ‘Fuji’ apple trees |
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| DOI：10.7606/j.issn.1000-7601.2013.03.19 |
| 中文关键词: PB0：苹果幼树 花芽分化 碳水化合物 |
| 英文关键词:PBO apple tree flower bud differentiation carbohydrates |
| 基金项目:科技部国家成果转化项目(2011GB23600009)；农业部国家苹果产业技术体系(CARS-28)：陕西省苹果重大创新项目(2011KTZB02-02) |
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| 中文摘要: |
| 以‘长富2号’为试材,研究不同浓度PBO喷施处理对富士苹果幼树成花、新梢生长、叶片和芽碳水化合物含量变化的影响。结果表明:(1)PBO喷施处理能在一定程度上提高‘长富2号’幼树上中下部位枝条的成花率和对树体各个部位枝条新梢生长形成抑制。不同浓度PBO喷施处理对‘长富2号’幼树叶片和芽碳水化合物含量变化的影响有所差异,对于高浓度PBO喷施处理(4000 mg·L-1和6667 mg·L-1),幼树各部位叶片蔗糖、葡萄糖、山梨醇和可溶性总糖含量在幼树生长前期(5-7月)增加显著,而淀粉含量在此时期却显著地减小；同样,高浓度PBO喷施处理对幼树芽山梨醇和可溶性总糖含量的增加作用在6月份均达显著水平,却导致芽淀粉含量在7月份显著地减小。(2)叶片与芽之间的碳水化合物的转化或转移和花芽的形成有密切的关系；高浓度PBO喷施处理(6667 mg·L-1),叶片山梨醇和可溶性总糖含量与芽相应指标之间具有显著的正相关,而两者淀粉含量之间的相关性却不显著。考虑到成本等因素,建议在花芽分化的关键时期(5-7月),喷施4 000 mg· L-1 PBO可以有效促进‘长富2号’幼树花芽的形成。 |
| 英文摘要: |
| In attempt to investigate the effects of spraying PBO on flowering rate and carbohydrate accumulation of ‘Fuji’ apple trees, different concentrations of PBP were sprayed on young apple (Malus domestica Borth.) cultivar ‘Fuji’ Nagafu No.2. The flowering rate, shoot growth and carbohydrate content changes of leaf and bud in apple trees were
studied also. The results showed that:(1)spraying PBO treatment could, to certain extent, improve flowering rate and
restrain shoot growth in upper, middle and basal part of ‘Fuji’ young apple trees. The spraying PBO with different concentrations had different effects on carbohydrate content changes of leaf and bud of in upper, middle and basal part of ‘Fuji’ young apple trees. Compared with control, spraying PBO with higher concentrations (4000 mg·L-1 and 6667 mg·L-1) could increase the content of the sucrose, glucose, sorbitol, total soluble sugar in leaf in upper, middle and basal part of ‘Fuji’ young apple tree in the early growth stage (from May to July), but significantly reduced starch content in leaf during this period. Similarly, spraying PBO with higher concentration significantly increased content of sorbitol and total soluble sugar in bud in June and significantly reduced starch content in bud in July. (2)Flower bud formation was
closely correlated to translocation or conversion of carbohydrate between leaf and bud. Spraying PBO of highest concentra-
tion (6667 mg·L-1) leaded to a significant positive correlation between sorbitol and total soluble sugar content and leaf and bud; however, corresponding correlation between starch content and leaf and bud was not significant. According to experiment results of thiis study and taking production investment into consideration, we proposed that spraying PBO treatment with 4000 mg·L-1 is effectiive in promoting flower bud formation of ‘Fujii’ apple trees in the period from May to July(the critical period for physiological diifferentiation of apple flower buds). |
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