02764naa a2200193 a 450000100080000000500110000800800410001910000190006024501350007926000090021452020800022365300100230365300190231365300200233265300190235265300220237170000160239377301610240911313622021-10-19       2021    bl uuuu     u00u1 u    #d1 aARGENTA, L. C.  aIncreased storability of 'Monalisa' apple by the controlled atmosphere and chemical inhibition of ethylene.h[electronic resource]  c2021  aThe new apple cultivar ?Monalisa? has been commercially grown in southern Brazil in recent years, mainly because it is resistant to major diseases and the fruit quality. This study assessed the storability of the 'Monalisa? apple fruit. Fruit treated or not treated with 1-methylcyclopropene (1-MCP) was stored at 0.8oC in the air (Air) or controlled atmosphere (CA). The CA was maintained at 1.5 kPa O2 and &lt0.5 kPa CO2 for experiment one and at 1.5 kPa O2 and four partial pressures of CO2 (&lt0.5, 1.5, 3.0, or 4.5 kPa) for experiment two. The fruit maturity and quality were assessed at harvest and after 2, 4, 6, and 8 months (experiment 1) and after six months (experiment 2) plus 1 or 7 days at 22??C. Fruit not treated with 1-MCP and stored in Air softened from 85 N to 48 N in two months from harvest and were severely affected by superficial scald and decay after a four-month storage period. 1-MCP treatment followed by Air or CA storage resulted in similar retention of firmness (≥75 N) and higher retention of firmness compared to CA storage without 1-MCP until the 6th month of storage. At the eighth month of storage, fruit exposed to 1-MCP and then stored in Air had similar firmness (~63N) to fruit stored in CA without 1-MCP exposure. CA, 1-MCP+CA, and 1-MCP+Air were similarly effective in reducing acidity loss during the 8-month storage period. The incidence of disorders increased throughout the storage period. In Air storage without 1-MCP, the maximum incidence of fruit affected by diffuse flesh browning, superficial scald, fruit cracking, and fungal decay was 55%, 53%, 73%, and 66%, respectively. CA and or 1-MCP reduced the maximum incidence of these disorders to less than 15%. ?Monalisa? apple fruit was sensitive to CO2 injury (brown patches in the cortex) in response to increasing concentration of CO2. A variant of skin scald on the sun-exposed side of fruit was of erratic incidence and not consistent with storage treatments. Storage life of ?Monalisa? apple fruit may be extended from 2 to 8 months by CA and or 1-MCP treatments.  adecay  aflesh firmness  aMalus domestica  amarketing life  asuperficial scald1 aSTANGER, M.  tIn: INTERNATIONAL CONTROLLED AND MODIFIED ATMOSPHERE RESEARCH CONFERENCE, 13., 2021, Leuven, Belgium. Abstracts... Heverlee, B??lgium: BIOSYST-MeBioS, 2021.