PJB-2024-457
Exploring the production of natural selenium enriched crisp Japanese plum series in suitable regions of Chongqing area of China
Xieping Sun
Abstract
Crisp Japanese plum series is poplar in southwest of China, especially in the Chongqing region. But not all regions are suitable for planting crisp plum series. Selenium (Se) is an essential trace element for the human body. In general, the soil Se content determines the food Se content. This study focuses on the suitability of planting crisp plum series in the Chongqing region of southwest China. The researchers collected and analyzed data on the longitude and latitude of 186 Chongqing regions where crisp plum series are planted. We used MaxEnt and ArcGIS to simulate the suitable areas for crisp plum series based on 19 bioclimate and altitude factors. The findings showed that the moderate-suitable area was the largest, covering about 4.93×104 km2 and accounting for 59.54% of the total area. The low-suitable, unsuitable, and high-suitable areas were smaller in comparison. The high-suitable area was located in the northwest of Chongqing, covering about 0.26 ×104 km2 and accounting for 3.21% of the total area. The study identified several factors that influenced the suitability of crisp plum series cultivation, including seasonal temperature change, mean temperature of the wettest quarter, precipitation of the driest month, and precipitation of the driest quarter. The Nanchuan district, which had the highest reported soil selenium content in Chongqing, had a moderate-suitable area mainly in the northwest, while the low-suitable and unsuitable areas were in the southeast. The selenium content in the 20 sampled areas ranged from 0.026-0.09 mg/kg FW, which did not reach the levels of natural selenium-enriched fruits (0.10-5.00 mg/kg FW) in China. This study provides valuable information for the optimized cultivation of crisp plum series in the Chongqing region and offers guidance for the production of naturally selenium-containing fruit.
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