02486naa a2200241 a 450000100080000000500110000800800410001910000220006024501320008226000090021450000870022352017110031065000180202165000170203965000160205665000090207265000180208165000140209965000170211365300270213070000260215777300610218319443902018-10-15       2012    bl uuuu     u00u1 u    #d1 aANTONIOLLI, L. R.  aMaturity index and cold storage effects on postharvest quality of 'Packham's Triumph' and 'Rocha' pears.h[electronic resource]  c2012  aArtigo apresentado para o INTERNATIONAL HORTICULTURAL CONGRESS, 28., 2010, Lisboa.  aPears have been grown in the south region of Brazil, where the climatic conditions are favourable. The aim of this work was to determine the harvest maturity index as well as maximum storage period of 'Packham's Triumph? and 'Rocha' pears to maintain quality attributes. The ?Packham?s Triumph? fruit were harvested from a commercial orchard at 7 days intervals and flesh firmness was used as a maturity index (MI1=76, MI2=67 and MI3=58 N). ?Rocha? pears were harvested twice and they were considered as MI1 and MI3 because of the firmness values. The fruit were stored at 1±1C and 90-95% RH for 15, 30, 45 and 60 days and evaluated at the end of each storage period and after five days at room temperature (24±1C), simulating a helflife period. Flesh firmness, water loss, peduncle dehydration, epidermis colour, soluble solids, titratable acidity were measured. ?Packham?s? pears harvested at MI1 and MI2 showed firmness loss after 30 days of cold storage, whereas fruit harvested at MI3 retained the initial values, resulting in firmer fruit after 60 days (P&lt0.001). Fruit harvested in MI3 had less firmness loss after 5 days at room temperature following 45 and 60 days of cold storage. ?Rocha? pears harvested in MI1 and MI3 showed firmness reduction during cold storage, which was intensified at room temperature. Maximum values of water loss approached 6%. Fruit peduncles of both cultivars dehydrated after 60 days of cold storage, but their colour remained green, independent of harvest maturity index. ?Packham?s Triumph? and ?Rocha? pears harvested at MI3 showed better quality attributes after 60 days of cold storage plus 5 days of shelf-life than fruit harvested at other maturity stages.  aArmazenamento  aFruticultura  aMaturação  aPera  aPós-colheita  aQualidade  aResfriamento  aÍndice de maturação1 aCZERMAINSKI, A. B. C.  tActa Horticulturae, The Haguegn. 934, p. 865-870, 2012.