Evaluation of mandarin hybrids grafted on 'Rangpur' lime in the Coastal Tablelands, Brazil

Abstract The production of mandarins is incipient in Northeastern Brazil in spite of the large regional market. Few studies have reported the performance of mandarins under the tropical conditions in Brazil, considering that, in general, the quality and yield of these fruits are more expressive in regions of subtropical and Mediterranean climates. In this work, tree size, fruit production and quality of four mandarin hybrids (‘Piemonte’ mandarin-tangor, ‘Murcott’ tangor and ‘Page’ and ‘Nova’ tangelo-mandarin) grafted on ‘Rangpur’ lime rootstock in Umbaúba, State of Sergipe, Brazil, were evaluated. The experimental design was randomized blocks with three replicates and three trees per plot. Planting was carried out in 2008 at tree spacing of 6.0 x 3.0 m in rainfed cultivation system. ‘Piemonte’ mandarin-tangor was more productive than ‘Murcott’ tangor and ‘Nova’ and ‘Page’ tangelo-mandarin, under the conditions evaluated in Umbaúba up to the eleventh year after planting. Regarding fruit quality, ‘Piemonte’ mandarin-tangor and ‘Page’ tangelo-mandarin can be indicated both for fresh consumption and for processing due to their higher total soluble solids, ratio and vitamin C content in relation to ‘Murcott’ tangor.

摘要：尽管巴西东北部区域市场需求庞大，但当地蜜橘的种植仍处于起步阶段。鉴于这类果品在亚热带与地中海气候区的品质与产量表现更为突出，目前针对巴西热带环境下蜜橘种植表现的相关研究仍较为匮乏。本研究对巴西塞尔希培州翁巴乌巴市的4个蜜橘杂交品种——‘皮埃蒙特’橘橙杂交种（Piemonte mandarin-tangor）、‘默科特’橘橙杂交种（Murcott tangor）、‘佩奇’柚橘杂交种（Page tangelo-mandarin）与‘诺瓦’柚橘杂交种（Nova tangelo-mandarin）——嫁接于‘朗普尔’酸橙砧木（Rangpur lime rootstock）后的树体生长量、果实产量与品质表现展开了评估。试验采用随机区组设计，设置3次重复，每小区种植3株果树。试验于2008年定植，株行距为6.0×3.0 m，采用雨养栽培模式。在本次试验的翁巴乌巴市环境条件下，定植后至第11年时，‘皮埃蒙特’橘橙杂交种的产量高于‘默科特’橘橙杂交种以及‘佩奇’与‘诺瓦’柚橘杂交种。在果实品质方面，相较于‘默科特’橘橙杂交种，‘皮埃蒙特’橘橙杂交种与‘佩奇’柚橘杂交种的总可溶性固形物含量、固酸比以及维生素C含量均更优，因此可同时适用于鲜食与加工用途。