Postharvest Biology and Technology ( IF 7 ) Pub Date : 2021-04-14 , DOI: 10.1016/j.postharvbio.2021.111540 Margot Visse-Mansiaux , Maud Tallant , Yves Brostaux , Pierre Delaplace , Hervé Vanderschuren , Brice Dupuis
To avoid losses from sprouting during potato storage, the anti-sprouting agent chlorpropham [CIPC] has been widely used over the past few decades. However, the European Union recently decided not to authorize the renewal of CIPC, prompting the value chain to find alternative treatments. We assessed for three years the potential of pre- and post-harvest anti-sprouting treatments to replace CIPC using four potato-processing varieties. Pre-harvest application of maleic hydrazide [MH] and post-harvest applications of 3-decen-2-one, 1,4-dimethylnapthalene [1,4-DMN] and CIPC were performed following supplier’s recommendations. In addition, we evaluated the potential of 3-decen-2-one and 1,4-DMN to prolong the efficacy of pre-harvest MH treatment anti-sprouting activity during storage. All molecules significantly reduced sprouting after seven months of storage compared with the untreated control group. MH, 3-decen-2-one, 1,4-DMN and CIPC displayed respectively 86.9 %; 77.9 %, 73.6 % and 99.8 % of efficacy to control sprout weight and 79.4 %; 73.4 %, 68.4 % and 96.9 % of efficacy to control sprout length. Our results suggest that using 3-decen-2-one and 1,4-DMN in combination with MH do not bring additional benefit to control sprouting. Because differences in dormancies could be observed between varieties, we also showed that the efficacy of post-harvest treatments is genotype-dependent, while MH pre-harvest treatment is effective equally for all varieties. Applications of CIPC and MH led to detectable residues in tubers, while no residue of 1,4-DMN has been detected in tubers treated with this molecule (< LOQ). We concluded that treatments with MH, 1,4-DMN and 3-decen-2-one are valuable alternatives to CIPC to control sprouting of processing potatoes.
中文翻译:
评估收获前和收获后的防萌芽处理方法以取代CIPC进行马铃薯存储
为了避免马铃薯在储存过程中发芽而造成损失,在过去的几十年中,防发芽剂氯丙胺[CIPC]已被广泛使用。但是,欧盟最近决定不授权续签CIPC,这促使价值链寻找替代疗法。我们用三年的马铃薯加工品种评估了收获前和收获后抗发芽处理替代CIPC的潜力,为期三年。按照供应商的建议进行收获前的顺丁烯二酰肼[MH]施用和收获后的3-decen-2-one,1,4-二甲基萘[1,4-DMN]和CIPC施用。此外,我们评估了3-decen-2-one和1,4-DMN延长贮藏前MH处理抗发芽活性功效的潜力。与未处理的对照组相比,所有分子在储存七个月后均显着减少了发芽。MH,3-decen-2-one,1,4-DMN和CIPC分别显示86.9%; 控制发芽重量的功效为77.9%,73.6%和99.8%;控制芽的功效为79.4%;控制豆芽长度的功效分别为73.4%,68.4%和96.9%。我们的结果表明,将3-decen-2-one和1,4-DMN与MH结合使用不会对控制发芽带来额外的好处。因为可以观察到品种之间的休眠性差异,所以我们还表明收获后处理的功效取决于基因型,而MH收获前处理对所有品种均有效。CIPC和MH的使用导致在块茎中可检测到残留,而在用该分子处理的块茎中未检测到1,4-DMN残留(<LOQ)。