Anthurium andraeanum senescence in response to 6-benzylaminopurine: Vase life and biochemical aspects
Anthurium andraeanum senescence in response to 6-benzylaminopurine: Vase life and biochemical aspects
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DOI：
10.1016/j.postharvbio.2019.111084
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发表时间：
2020-03-01
影响因子：
7
通讯作者：
Pereira Lima, Giuseppina Pace
中科院分区：
文献类型：
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作者：
Favero, Bruno Trevenzoli;Lutken, Henrik;Pereira Lima, Giuseppina Pace
植物生长调节剂是植物生长发育的关键物质，外源植物生长调节剂的使用对切花的瓶插寿命有积极的影响。然而，应用方法可以直接影响PGRs的有效性。研究了喷施或脉冲处理0、37.5、75、150和300 mg L-16-苄氨基嘌呤（BAP）对安祖花（IAC NK 130）采后切花品质的影响。测定佛焰苞和佛焰苞的瓶插寿命、鲜重、可溶性糖含量、总酚含量和多酚氧化酶活性。喷施BAP比脉冲处理效果更好，瓶插寿命分别从13.8d延长到17.9d，FW分别维持在初始值的93%和76%。用BAP浓度低于150 mg L-1处理的Spathes表现出最高的可溶性碳水化合物含量。脉冲处理的TPC高于喷雾处理。在佛焰苞中，随着BAP浓度的增加，TPC降低，PPO活性升高，表明酚类物质的消耗与此酶活性有关。然而，在BAP水平低于150毫克L-1，PPO的活性仍然很低。综上所述，喷施37.5 ~ 300 mg L-1的BAP能提高猕猴桃采后的耐贮性。andreanum 'Apalai'花不诱导佛焰苞变蓝。
Plant growth regulators (PGRs) are key compounds in plant development and their exogenous use has the potential to positively influence the vase life of cut ornamentals. However, the application method can directly impact the effectiveness of PGRs. This study determined the impact of spraying or pulsing 0, 37.5, 75, 150 and 300 mg L-1 6-benzylaminopurine (BAP) on postharvest quality of cut Anthurium andraeanum `Apalar (IAC NK 130) flowers. Vase life, fresh weight (FW), soluble carbohydrate content, total phenolic content (TPC) and polyphenol oxidase (PPO) activity were determined in spathes and spadices. Spraying BAP was more effective than pulsing and extended the vase life to 17.9 d compared to 13.8 d, respectively and FW was maintained at 93% and 76 % of initial values, respectively. Spathes treated with a BAP concentration below 150 mg L-1 showed highest soluble carbohydrate content. TPC was higher for the pulsing treatment than the spraying treatment. In spathes, TPC decreased and PPO activity increased over time with increasing of BAP concentration, showing phenolic depletion linkage to this enzyme activity. However, at BAP levels below 150 mg L-1, the activity of PPO remained low. In summary, spraying BAP at concentrations of 37.5-300 mg L-1, improved postharvest durability of A. andreanum 'Apalai' flower without inducing spathe blueing.