Clear benefits from CA storage for raspberries

Nine red raspberry (Rubus idaeus L.) cultivars and advanced selections from the Agriculture and Agri-Food Canada breeding program were assessed for their potential market-life when held at 1?C in air or controlled atmosphere (CA, 12.5 kPA CO2/7.5 kPa O2) with 95% RH over 2 seasons. At harvest, fruit were assessed for colour, firmness as well as sugar, acid and volatile composition. Fruit in16-fruitsamples were individually assessed every 2 to 3 days for decay and physiological breakdown (PB). Market-life was determined as the number of days (lag) before the first sign of deterioration. The rate of fruit loss was calculated as a linear rate following the lag. Fruit decay of all cultivar/selections was strongly suppressed by CA storage with the lag period extended to >51 days compared to 19 to 30 days for fruit stored in air. Depending on cultivar/selection, CA increased the lag period prior to PB by upto14 days greater than air stored fruit. Fruit held in CA softened, but the extent varied significantly among cultivar/selections. Fruit with the longest marketlife when held in either air or CA included ?ACC Eden?, K02-15, K03-9 and K06-5, those with the shortest market-life were ?Encore?, K02-14, Nova and K06-1, while ?Glen Ample? was intermediate. Fruit cultivars/selections with high firmness at harvest tended to have longer market-life than those with low firmness.Relationships between sugar, acid and volatile content and fruit market-life will be discussed (in the complete paper).SourcesRESPONSE OF RASPBERRY CULTIVARS AND SELECTIONS TO CONTROLLED ATMOSPHERE STORAGEForney, CF1, Jamieson, AR1, Munro Pennell, KD1, Jordan, MA1charles.forney@agr.gc.ca1Agriculture and Agri-Food Canada, Kentville, Nova Scotia, Canada IHC 2014, International Horticulture Congress, 17-22 August 2014, Brisbane,http://www.ihc2014.org/Pictures show the system (1) Palicontrol, by Absoger, and (2)?Palliflex 300 by Van Amerongen. Key wordsFrambuesa?? ??? ?raspberry raspberries?? ?framboos?? ?????????? ?????? ?frambo?? ?framboise?? ???????????? ???????????? ??? ?lampone?? ?malina?? ?framboesa?? ????????? ??? ?raspberry ???? ??? ??? ?Poscosecha?? ?postcosecha?? ?postharvest?? ?na-oes?? ??? ??? ???????? ????? ??? ?post-r?colte?? ????? ?? ??????????? ??? ?na-oogst?? ?post-raccolta?? ?Obr?bka po?? ?p?s-colheita?? ????????????????? ?hasat sonras??? ??? ?Ernte?? ????????????????? ????? ????????????? ?postcollita?? ?poskliz?ov頠 ????? ??? ??? ??? ?nakon branja?? ?pozberov頠 ??? ?obdelovanje zemlje po?? ?post-colleita?? ?????? ??????? ?pascapanen?? ??il?onn postharvest?? ??????? ?p?c ra?as?? ?derliaus apdirbimas po?? ?lepas tuai?? ??? ?? ???????? ?post-recoltare?? ??????? ??????? ???????????????????? ?????????????? ?????????????????? ?sau thu ho?ch?? ?????????????????? ?zangemva kwenkathi yokuvuna?? ???? ?