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Attempts had been made to optimize nitrogen (N), phosphorus (P) and potassium (K) fertilization rates for increased fruit performance of Chinese cherry (Prunus pseudocerasus Lindl.). This study was conducted using a randomized block design (RBD) consisting of three factors and four levels, totaling to 14 treatments with each treatment repeated in t...
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... Indeed, a positive correlation (0.51, p<0.05) between fruit weight and N supply was obtained based on the correlation matrix (Table S2). These findings supported earlier research on Chinese cherry (Guo et al., 2022), dragon (Perween and Hasan, 2019), and pear fruit (Sete et al., 2019). ...
Water and fertilization management are the main concerns of farmers in order to achieve an economic yield and high fruit quality. This study evaluates conventional farmer’s fertilization practices in commercial peach orchards (Regueb region) and sets suitable nitrogen (N), phosphorus (P), and potassium (K) supplies to improve yield and fruit quality. Different farmers’ N-P-K supply practices (called FarmNPK) were applied during the different developmental stages of the growing season (S1 budburst and swelling; S2 flowering and fruit set; S3 fruit development; and S4 fruit ripening). Seven cultivars (Flordastar, Plagold5, Plagold10, Plagold15, Plawhite5, Plawhite10, and UFO3) were considered. Depending on cultivars and growth stage, the ranges of total N-P-K supplies were 95-208, 44-84, and 67-103 kg ha-1, respectively. Total fresh yield was quantified, and fruit quality (pomology, phenolic composition, main sugars, and organic acids) was determined in the mesocarp and exocarp. The results revealed that NPK supplies from 95-65-76 to 165-84-103 kg ha-1 induced the highest yield that varied between 50 and 68 kg tree-1, especially with high N supplies during S2. In all cultivars, high N and K supplies in S3 and S4 induced the best weight and fruit size, with the highest total soluble solid content in the fruit, while P supply appeared to be negatively correlated with total sugar content. Analysis of phenolic composition showed that flavan-3-ols varied between 209 and 7114 mg kg-1 DW. In conclusion, the optimum supply of N, P, and K at the appropriate stages, mainly S2 for N supply, and S3 and S4 improved color and ensured appreciable quality.
... Regarding fruit mass, an increase is observed in the fruit mass of S. hupehensis and S. koehneana with the increment of soil P and N. P is more heavily employed in protein synthesis, while N plays a crucial role in photosynthesis [31], both of which are essential for plant growth and development [32][33][34][35][36]. These factors have displayed a positive correlation with fruit mass, emphasizing the significance of soil fertility in determining fruit yield [37,38]. Nevertheless, among the four Sorbus species examined, the average seed mass only constitutes 1.47% of the average fruit mass, indicating a substantially high proportion of 98.53% allocated to flesh mass (Table 3). ...
To investigate resource allocation and adaptation strategies of Sorbus spp. under different environment and soil conditions, four Sorbus L. species (Sorbus hupehensis C. K. Schneid, Sorbus pohuashanensis (Hance) Hedl, Sorbus discolor (Maxim.) Maxim, Sorbus koehneana C. K. Schneid) were selected as the study materials. Phenotypic traits including seed mass, fruit mass, and fruit colour were measured and analyzed. Linear Mixed-Effects Models were employed to analyze the associations between phenotypic traits and the environment, and the Maxent model was used to predict the potential distribution areas. Our study reveals that Sorbus spp. tend to prioritize seed production to increase their survival ability in nutrient-poor environments, while they tend to lean towards fruit production in nutrient-rich environments. Specifically, S. pohuashanensis has fruit skin rich in carotenoids and anthocyanins, with the degree of fruit colouration being positively correlated with the environmental suitability. However, the other three spp. demonstrate the opposite pattern. S. pohuashanensis is found to be most suitable for growth in mountainous areas around 40° N, and it is adapted to low temperatures. S. hupehensis prefers warm regions and is distributed in southern Shanxi, while S. discolor has a wider range of adaptability. These results provide a scientific basis for the protection and rational utilization of Sorbus spp. by elucidating their ecological adaptation abilities.
... Chinese cherry (Cerasus pseudocerasus Lindl.), which belongs to Prunus of Rosaceae and is native to China, is one of the four main cherry species in the world . Chinese cherry is early flowering and early fruiting, with good adaptability and resistance, high yield, good fresh flavor quality, and both edible value and ornamental value (Guo et al., 2022). It plays an increasingly important role in the rural revitalization strategy and the development of a characteristic fruit industry in China . ...
Chinese cherries are early flowering and early fruiting, with both edible and ornamental values. This study aims to explore the effects of pre-harvest spraying with different concentrations of CaCl2, amino acid calcium, and sugar alcohol calcium on the quality of Chinese cherry and the expression of genes related to cell wall softening. The goal is to identify suitable calcium-based agents for pre-harvest spraying on Chinese cherry. The results of the study demonstrated that all three exogenous calcium treatments significantly increased the mineral content compared to the control group. Moreover, these treatments also led to a significant increase in various fruit quality parameters such as hundred fruit weight, firmness, soluble solid, soluble sugar, titratable, vitamin C, soluble protein, β-Carotene content and superoxide dismutase, peroxidase activities. Additionally, they were found to effectively reduce rot rate, polyphenol oxidase activity, malondialdehyde content and relative conductivity. The activity of pectin methylesterase, polygalacturonase, cellulase and β-galactose was reduced by amino acid calcium and sugar alcohol calcium. All three types of exogenous calcium down-regulated the expression of PME and ChCaBP1. Additionally, amino acid calcium and sugar alcohol calcium decreased the expression of PG, Cx, and BGal. Exogenous calcium reduces the size of stomata in the fruit epidermis, leading to a decrease in both fruit respiration rate and transpiration. Of the three calcium preparations, amino acid calcium and sugar alcohol calcium were more effective than CaCl2, with 0.12 g·L⁻¹sugar alcohol calcium and 0.06 g·L⁻¹ amino acid calcium being the most effective.
... The phenomenon may be caused by two reasons: (1) higher P content caused in leaf tissue by phosphorus fertilization helps to enhance the photosynthetic rate [109], and then to improve the accumulation of carbohydrates, and (2) sugar transportation and allocation from roots and shoots are affected by P content in the plant [99,110]. High P content in cherries is obtained by improving sugar transportation from leaf to fruit [111]. The regression equation for TA with soil parameters was Y TA = 0.008X 1 − 0.008X 2 + 0.455X 3 + 0.081X 4 + 5.709X 5 − 76.980 (R 2 = 0.861). ...
As one of the fruits widely planted in China, the quality of sweet cherries is affected by various factors. This study aims to investigate the characteristics of geographical indication (GI) sweet cherries grown in China and to analyze the effects of cultivars, climate types, and soil conditions on their quality traits. Twenty-two parameters of nine cherry samples and their planted soil properties were analyzed through a descriptive analysis and correlation analysis. There were significant differences in the physiochemical traits. Notable positive correlations between the fruit weight and its size, rate of edibility, and flavonoid content were shown. The Univariate-General Line Model exhibited that weight, soluble solids content (SSC), titratable acidity (TA), and total phenolic content (TPC) were mainly influenced by both the cultivar and climate type, while only the cultivar affected the maturity index (MI). Soil condition parameters were significantly different for each sample. Based on the established linear regression models, it was found that soil P had a positive impact on SSC and TA, but a negative effect on TPC (p < 0.05). On the other hand, soil K had a negative effect on TA but a positive impact on TPC (p < 0.05).
... Cardeñosa et al. [142] concluded that applying high N amounts could lead to an increase in the citric acid content and thus conceal the sweet fruit flavor in strawberries, whereas low N levels could decrease the acidity and result in an observably lower content of AA and a higher fruit firmness. The application of the low level of N by fertigation, however, had no deleterious effect on the fruit of the sweet cherry (Table 1) [112], while higher N showed deleterious effects in the sour and Chinese cherry [143][144][145]. Furthermore, Augustin [146] reported a decrease in AA of some cultivars of potatoes, with increasing amounts of N fertilizer used. ...
Southern Chile has experienced a strong increase in sweet cherry production in recent years. However, there are climatic gaps that negatively reduce the fruit quality and yield of exportable fruit, such as the high incidence of rains during flowering and pre-harvest. The use of roof covers has become an agronomic solution that offers protection from weather events, such as rain, which will significantly increase the exportable fruit. However, the use of plastic covers can cause negative impacts on the fruit, such as a loss of firmness and acidity. Currently, the incidence of internal (pulp) browning has reduced the quality of cherries produced in Southern Chile, although research on this subject is largely under explored. Some studies reported that a high content of antioxidants in the fruit, both phenolic and non-phenolic (e.g., ascorbic acid), could reduce the incidence of the physiological disorder of browning. The soils of Southern Chile are characterized by the high content of organic matter, which implies high levels of available nitrogen (N) and a high phosphorus (P) content. Some studies, however, have shown that fertilization with N and P would significantly improve the postharvest quality, shelf life, and the accumulation of antioxidant compounds in fruits, even better than other strategies, including selenium and chitosan applications. However, there needs to be more detailed information on this aspect of the sweet cherry fruit production. The quality attributes and postharvest life of cherries are closely associated with the antioxidant levels of fruits, which could be related to either the soil acidity level of the Chilean Andisols or the levels of P and N in soil or plant tissues. Therefore, the objective of this review was to discuss the role of the N and P supply on the internal browning incidence in sweet cherries and relate it to what is known in other fruits.
