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首页> 外文期刊>Acta Horticulturae >Splitting in Radish - Does Preharvest Environment Influence the Response to Postharvest Handling?
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Splitting in Radish - Does Preharvest Environment Influence the Response to Postharvest Handling?

机译：萝卜分裂-收获前的环境会影响对收获后处理的反应吗？

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摘要

Splitting in radish (Raphanus sativus) hypocotyls is a problem for growers which occurs both pre- and postharvest. Experiment 1 investigated the effects of timing of irrigation application on splitting and the hypocotyl water content at harvest. Experiment 2 investigated the effects of hypocotyl water content on susceptibility to splitting postharvest. In Experiment 1 R. sativus 'Rudi' plants were glasshouse grown, the three treatments were watered for seven days then given two irrigation treatment periods of 10 days each: on-going irrigation (W/W), period of no irrigation followed by irrigation (D/W), and period of irrigation followed by no irrigation (W/D). At harvest the D/W treatment produced fewer splits than the W/D and W/W treatments (P<0.001) suggesting a dry period mid-growth results in less splitting. At harvest, treatment W/D had a significantly (P<0.001) lower hypocotyl water content on average than W/W and D/W. This suggests that irrigation in the final 10 days prior to harvest determines hypocotyl water content at harvest. In Experiment 2, hypocotyls at a range of water contents between 93 and 97% were tested for susceptibility to splitting as a result of postharvest mechanical damage using impact and puncture tests. Radish hypocotylwater content was found to be negatively correlated with puncture force and an increase in the number of radishes which split after dropping was observed at hypocotyl water contents above 96.5%. In conclusion, the water content of the growing medium during growth influences splitting at harvest, the water content of the growing medium prior to harvest affects the water content of the hypocotyl at harvest and radishes are more susceptible to splitting postharvest from dropping and puncture at high hypocotyl water contents.
机译：萝卜（Raphanus sativus）下胚轴的分裂对于种植者来说是一个问题，既发生在收获前也发生在收获后。实验1研究了灌溉时机对分裂和收获时下胚轴含水量的影响。实验2研究了下胚轴含水量对收获后分裂敏感性的影响。在实验1中，将温室栽培的R. sativus'Rudi'植物种植到温室中，将这三种处理浇水7天，然后进行两次灌溉处理，每期10天：持续灌溉（W / W），先不灌溉再灌溉（D / W），以及灌溉期后不进行灌溉（W / D）。收获时，D / W处理产生的劈裂少于W / D和W / W处理（P <0.001），这表明干旱中期生长会减少劈裂。收获时，处理W / D的平均下胚轴含水量比W / W和D / W低（P <0.001）。这表明收获前最后10天的灌溉决定了收获时下胚轴含水量。在实验2中，使用冲击试验和穿刺试验测试了含水量在93％至97％之间的下胚轴对由于收获后机械损伤而分裂的敏感性。发现萝卜下胚轴含水量与穿刺力呈负相关，在胚轴含水量高于96.5％时，萝卜落下后分裂的萝卜数量增加。总之，生长过程中生长介质中的水分会影响收获时的分裂，收获前生长介质中的水分会影响收获时下胚轴的水分，萝卜更容易在收获后分裂，不会因高空掉落和刺破而破裂。下胚轴含水量。

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