Avaliaram-se os efeitos do fungicida benomil (0,06%) e da luz ultravioleta (254nm, UV-C) na conservação de pêssegos cultivar Jade, aos 4 e 8 dias de armazenamento em condição ambiente (26ºC e 75-85% de UR). Os tratamentos foram: T1-Testemunha;T2 - benomil (0,06%); T3 - 10 minutos de exposição à radiação UV-C (3,71 kj. m-2) e T4 - 30 minutos de exposição à radiação UV-C (11,15 kj. m-2). O delineamento experimental foi o inteiramente casualizado, seguindo-se um esquema fatorial 2 x 4 com 3 repetições de 10 frutos cada. Os parâmetros avaliados foram: sólidos solúveis totais (SST), acidez titulável total (ATT), pH, firmeza da polpa e incidência de podridão. Os pêssegos não apresentaram alteração do pH, em ambos os tempos de avaliação. Os SST, a ATT e a firmeza da polpa sofreram alterações aos 4 dias de armazenamento, sendo que, aos 8 dias nessa condição, a firmeza da polpa e a incidência de podridão apresentaram diferenças significativas em função dos tratamentos. Os pêssegos dos tratamentos T2 e T4 apresentaram menor incidência de podridões aos 8 dias de armazenamento, porém não diferiram estatisticamente entre si. Concluiu-se que as alterações nos parâmetros físico-químicos (SST, ATT, pH e firmeza da polpa) , aos 4 e 8 dias de armazenamento ambiente (26ºC e 75-80% de UR), não afetaram a qualidade dos pêssegos bem como a utilização de luz ultravioleta (254 nm, UV-C), durante 30 minutos, controla 100% as podridões dos pêssegos da cultivar Jade, armazenados, após 4 e 8 dias, em condição ambiente.
‘BRS F183’ (Potira) is a late-maturing and red skin potato cultivar, suitable for French fry processing, due to tuber high dry matter content of long oval shape, large size, light yellow flesh, and light fry color. It is also suitable for the fresh market due to its attractive tubers of intense red color, smooth skin and shallow eyes. In six trials, ‘BRS F183’ showed average tuber yields that did not differ from ‘Asterix’. The marketable yield was relatively high, reaching 98.5% in the tropical ecosystem. Larger tubers of ‘BRS F183’ than ‘Asterix’ were also observed in the autumn crop of the subtropical ecosystem. In most of the trials, the dry matter content was higher than that of ‘Asterix’, varying from 20.5 to 23.0%. A very low incidence of tuber disorders was observed in ‘BRS F183’, with the secondary growth lower than ‘Asterix’. ‘BRS F183’ presented medium tuber dormancy. Tuber glucose content suitable for French fry processing (≤1.2 mg g-1 of fresh mass) was shown by ‘BRS F183’ after harvest and storage at 7.5°C, 8.9°C and 20°C for up to 180 days, while ‘Asterix’ was suitable up to 120 days after storage at 8.9ºC. ‘BRS F183’ is moderately resistant to early blight and moderately susceptible to late blight. It is susceptible to PVY, PLRV, and root-knot nematode. Field observations indicate that resistance/susceptibility to soft rot, black scurf, and bacterial wilt of ‘BRS F183’ is not different from the main cultivars grown in the country. However, higher susceptibility to common scab was shown in some validation tests. ‘BRS F183’ was released in 2020 by Embrapa, as a product of the breeding program developed by Embrapa Temperate Agriculture and Embrapa Vegetables.
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