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Ultrastructure and Composition Analysis of the Pericarp of Six Melon Varieties with Different Storage Characteristics
Food Science 2024, 45(17): 199-205
Published: 15 September 2024
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Objective

To explore the relationship between the structure and composition of melon pericarp and its storability.

Methods

We observed the surface and cross-sectional ultrastructure of the pericarp of six different melon varieties with different storage characteristics using scanning electron microscopy (SEM). The composition and antioxidant capacity of the pericarp were analyzed.

Results

The wax content, the number of outer epidermis cell layers, cell arrangement and cuticle thickness of melon pericarp were closely correlated with fruit storability. There was a positive correlation between pericarp hardness and fruit storability. The polygalacturonase (PG) in the pericarp degrades the composition of the cell wall and consequently causes a decrease in the hardness of the pericarp, affecting the storability characteristics of the fruit. The antioxidant substances such as total polyphenols and flavonoids in the pericarp of different melon varieties, as well as the activities of antioxidant enzymes such as peroxidase (POD) and superoxide dismutase (SOD), affected their storability characteristics.

Conclusion

Principal component analysis (PCA) showed that pericarp hardness, total pectin (TP) content, protopectin (PP) content, PG, pectin methylesterase (PME) and peroxidase (POD) activities had a significant impact on melon storability.

Issue
Effects of Different Pruning and Fruit Retention Methods on Plant Growth and Fruit Quality of Melon
Journal of Xinjiang University(Natural Science Edition in Chinese and English) 2025, 42(1): 48-54,65
Published: 01 January 2025
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In order to explore the effect of pruning and fruit retention on the comprehensive traits and fruit quality of melon plants, the main melon variety “Xiazhi” in Turpan was used as the experimental material, and set up seven different pruning and fruit retention methods, including one-vine with single fruit, one-vine with double fruit, et al. to measure and analyze the agronomic traits, photosynthesis, and fruit related indicators of melon plants in four stages of growth, and five stages after pruning. The determination of comprehensive traits of melon plants and the analysis of fruit appearance and quality showed that the melon plants treated with double vines pruning had better comprehensive traits; The appearance characteristics and fruit quality of the melon fruit treated with double vines and single fruit are the best, while the appearance characteristics and fruit quality of the melon fruit treated with one-vine and double fruit are the worst. The double vines with single fruit treatment method can effectively balance the distribution of plant nutrients, keep the plant in a good growth state, and ensure the appearance and quality of the fruit. The one-vine with double fruit treatment cannot meet the nutritional needs of the fruit well, exacerbating the physiological premature aging of the melon plant, leading to poor growth status and fruit quality.

Issue
Advances in the Study of the AP2 Subfamily in Plants
Journal of Xinjiang University(Natural Science Edition in Chinese and English) 2023, 40(3): 351-357
Published: 01 May 2023
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AP2/ERF transcription family factors play an important role in plant growth, reproduction and interactions with the environment. According to the number of domains, the AP2/ERF family is divided into two subfamilies, AP2 and ERF. This study reviews the research progress on the gene structure, functionand complex regulatory networks and mechanisms among the major members of the AP2 subfamily.

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