Nutritional Quality of Field-grown Tomato Fruit as Affected by Grafting with Interspecific Hybrid Rootstocks
Nutritional Quality of Field-grown Tomato Fruit as Affected by Grafting with Interspecific Hybrid Rootstocks
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DOI：
10.21273/hortsci11275-16
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发表时间：
2016-12-01
期刊：
影响因子：
1.9
通讯作者：
Zhao, Xin
中科院分区：
文献类型：
--
作者：
Djidonou, Desire;Simonne, Amarat H.;Zhao, Xin
本研究对种间杂交砧木嫁接对大田栽培番茄果实品质的影响进行了为期2年的研究。将‘Florida 47’番茄植株嫁接到‘Beaufort’或‘Multifort’砧木上的果实品质属性与未嫁接和自嫁接对照进行比较。嫁接植株的果实产量高于非嫁接植株和自嫁接植株，并使可销售果实的产量增加了约41%。在产量增加的同时，这些水果的营养品质属性几乎没有重大差异。嫁接到种间砧木后，果实水分的增加幅度虽小，但显著（约0.6%），但风味性状如总可滴定酸度（TTA）和可溶性固形物含量（SSC）与TTA之比没有显著变化。在被评估的抗氧化剂中，抗坏血酸浓度在嫁接植株的果实中降低了22%，但对总酚类物质和抗氧化能力（氧自由基吸收能力）的影响不明显。类胡萝卜素（番茄红素、β -胡萝卜素和叶黄素）在嫁接杂交砧木植株果实中的含量与未嫁接和自嫁接对照相似。总体而言，季节差异大于嫁接对果实品质属性的影响。研究表明，种间杂交砧木嫁接是提高番茄果实产量的一种有效的园艺技术。尽管使用这些砧木会适度降低抗坏血酸含量，但嫁接对新鲜市场上的西红柿的果实成分或营养品质没有造成重大的负面影响。
In this study, the effects of grafting with interspecific hybrid rootstocks on fieldgrown tomato fruit quality were evaluated over a 2-year period. Fruit quality attributes from determinate ` Florida 47' tomato plants grafted onto either 'Beaufort' or 'Multifort' rootstocks were compared with those from non-and self-grafted controls. Grafted plants had higher fruit yields than non-and self-grafted plants, and increased production of marketable fruit by approximate to 41%. The increased yield was accompanied by few major differences in nutritional quality attributes measured for these fruit. Although grafting with the interspecific rootstocks led to consistently small, but significant increases of fruit moisture (approximate to 0.6%), flavor attributes such as total titratable acidity (TTA) and the ratio of soluble solids content (SSC) to TTA were not significantly altered. Among the antioxidants evaluated, ascorbic acid concentration was reduced by 22% in fruit from grafted plants, but significant effects were not evident for either total phenolics or antioxidant capacity as assayed by oxygen radical absorbance capacity (ORAC). Levels of carotenoids (lycopene, beta-carotene, and lutein) were similar in fruit from grafted plants with hybrid rootstocks compared with non- and self-grafted controls. Overall, the seasonal differences outweighed the grafting effects on fruit quality attributes. This study showed that grafting with interspecific hybrid rootstocks could be an effective horticultural technique for enhancing fruit yield of tomato plants. Despite the modest reduction in ascorbic acid content associated with the use of these rootstocks, grafting did not cause major negative impacts on fruit composition or nutritional quality of fresh-market tomatoes.