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首页> 外文期刊>Revista Brasileira de Fruticultura >O teor de cálcio na casca é indicativo da suscetibilidade ao 'bitter pit' em ma??s 'fuji'
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O teor de cálcio na casca é indicativo da suscetibilidade ao 'bitter pit' em ma??s 'fuji'

机译：蛋壳中的钙含量表明“富士”苹果对“苦涩坑”的敏感性

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This study was carried out to identify the mineral attributes in the flesh and skin tissues better related to bitter pit severity in 'Fuji' apples. 'Fruit were harvested in a commercial orchard in Southern Brazil (Lages, SC), and left for four months in conventional cold storage (at 0±0.4oC and 90-95% RH). Subsequently, fruits were divided into four lots according to the level of bitter pit severity: none (0 pit/fruit), low (1-2 pits/fruit), moderate (3-4 pits /fruit), and high (5-16 pits /fruit). There were 15 fruit replicates for each level of bitter pit severity. Mineral analysis of Ca, Mg, K, and N in the skin and in the flesh tissues were performed on individual fruits of each severity level. The univariate analysis in the fresh tissue showed an increase of K content and of the K/Ca ratio with the increase of bitter pit severity, despite of no difference of Ca contents. In the skin, Ca and N contents reduced, and K/Ca, Mg/Ca, and (K+Mg)/Ca ratios increased with the increase of bitter pit severity. However, the canonical discriminant analysis (multivariate analysis) showed that the best segregation between levels of bitter pit severity was achieved with the Ca content in the skin. Therefore for 'Fuji' apples, it is safer to predict the occurrence of bitter pit during cold storage by assessing the Ca content in the skin rather than the in flesh. Fruit with Ca content in the skin < 240 mg kg-1 of fresh matter are susceptible to bitter pit.
机译：进行这项研究的目的是确定果肉和皮肤组织中的矿物质属性与“富士”苹果中苦坑严重程度的关系更好。 '水果收获于巴西南部（拉格斯，南卡罗来纳州）的一家商业果园中，并在常规冷藏（在0±0.4oC和90-95％RH）下放置四个月。随后，根据苦点严重程度将水果分为四批：无（0个/水果），低（1-2个/水果），中等（3-4个/水果）和高（5-个） 16个/果）。每个等级的苦坑严重程度有15个水果重复。皮肤和果肉组织中的Ca，Mg，K和N的矿物质分析是针对每种严重程度的水果进行的。在新鲜组织中的单变量分析表明，尽管苦瓜的钙含量没有差异，但随着苦坑严重程度的增加，钾含量和钾/钙比也随之增加。在皮肤中，钙和氮的含量降低，并且随着苦点严重程度的增加，K / Ca，Mg / Ca和（K + Mg）/ Ca比值增加。但是，规范判别分析（多变量分析）表明，使用皮肤中的Ca含量可以实现苦点严重程度之间的最佳隔离。因此，对于“富士”苹果，通过评估皮肤中而不是果肉中的钙含量来预测冷藏期间苦坑的发生更为安全。皮肤中Ca含量<240 mg kg-1的新鲜物质的水果易患苦坑。

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