Fruit weight, firmness and soluble solids content during ripening of Karešova cv. sweet cherry

Abstract

Changes in fruit weight, firmness and soluble solids content during the ripening period of Karešova cv. including relationships between these characteristics were studied in 1998-2001. These years differed from each other in the amount and distribution of rainfall and in the course of temperatures. The length of ripening period fluctuated from 14 to 21 days. An increase in average fruit weight during the ripening period was 0.1 g per day. The actual increase in fruit weight was in a close correlation with the amount of rainfall in a few previous days. After heavy rainfalls, above 40 mm, fruit weight increased by nearly 1 g within in a few days. In the course of the ripening period fruit firmness decreased from about 2.5 N at the beginning of the period to about 1.5 N at its end. This decrease seems to be mainly the function of time during ripening. However, a low correlation between the amount of rainfall in the previous days and the decrease in firmness was also found. This correlation could be connected with negative regression of fruit firmness on the weight of the fruit. In the more rainy years 1998 and 1999 these decreases in firmness were more significant than in the other two years. Soluble solids content (SSC) increased from about 12% Brix at the beginning of the period to about 16% at its end. There were also found positive correlations between the weight of fruits and SSC. Taking into account contributions of all studied factors and their changes a conclusion was drawn that Karešova cv. should be harvested within one week from the beginning of its ripening period.

Year and genotype effects on the fruit physico-chemical traits of sweet cherry cultivated under Southern Mediterranean climate in Morocco

“…However, the mean fruit firmness was lower during the rainfall year (2017) like that obtained during the drought year (2015). It has been reported that fruit firmness decrease with rainfall increasing [17]. These findings are in accordance with those obtained in the present study for the year 2015 and 2016.…”

“…In sweet cherry, the final fruit size and weight is related to the cell length than to the numbers of cells [15]. Thus, climatic conditions and supply resources limitations affected more final cherry size during cell enlargement (stage III of fruit development) than cell division (during stage I) [16,17]. The data of rainfall registered in 2016 showed that the amount of precipitation during the May and June (corresponding to the stage III of fruit development) was higher than that registered in 2015 and 2017 during the same period (Table 3).…”

Postharvest properties of sweet cherry fruit depending on rootstock and storage conditions

“…However, some authors (Drake andElfving 2002, Serrano et al 2009) suggest delaying the harvest time, which could enhance consumer appeal, increase fruit value, improve the quality of fruits (i.e. fruit size and SSC), and increase the yield (at the average rate of about 2% per day) (Blažková et al 2002). Our study showed that the rootstocks significantly affected the quality features (fruit firmness, SSC, TA) of 'Regina' sweet cherry fruit at harvest (Tab.…”

Quality characteristics of dried persimmon (Diospyros kaki Thunb) of different fruit sizes

“…Sample S-3 (34.1 °Bx) contained significantly high soluble solid contents as compared to other samples (Table 2). Blažková et al (2002) also found positive correlations between the weight (size) of fruits and soluble solid contents.…”