Maize Genomics and Genetics 2025, Vol.16, No.3, 149-166 http://cropscipublisher.com/index.php/mgg 164 The growth period is generally short, mostly around 80 days, making it suitable for local planting in spring and autumn. Most varieties have short and compact plant types, low ear positions, and outstanding field resistance to lodging; the ears are large and uniform, with good firmness and minimal bald tips, and the fresh weight of a single ear meets the requirements of commercial corn. In terms of yield, varieties such as 'Caitiannuo 168' and 'Zhetian 19' performed outstandingly, with an output of more than 1 000 kg per mu, significantly higher than the control, and have the characteristics of high and stable yield; 'Jinyin 208' has a medium to high yield but excellent quality, and 'Meiyu 25' has an excellent taste and a decent yield, all of which are types worthy of promotion. Quality testing and sensory evaluation show that sweet corn varieties have high sweetness and strong flavor, while glutinous corn varieties have high viscosity and soft texture, and sweet and glutinous varieties have the advantages of both. In particular, the taste scores of 'Jinyin 208' and 'Caitiannuo 168' are among the best, and consumers have a very high acceptance. In terms of stress resistance, all the main varieties have shown strong resistance to lodging and good drought resistance. Among them, 'Caitiannuo 168' is resistant to low temperatures and 'Lutiannuo 191' is resistant to salt and alkali, and can still grow and bear fruit normally under adverse conditions. Resistance to diseases and pests is a relative weakness of some varieties. For example, 'Xiantiannuo 88' and 'Ditiannuo 336' are susceptible to some diseases, but through appropriate plant protection measures, they can be controlled to a level that does not affect the harvest. Varieties such as 'Caitiannuo 168', 'Zhetian 19', 'Jinyin 208', and 'Meiyu 25' show comprehensive advantages of high yield, excellent quality, and strong adaptability in the Linhai area, and can be used as leading fresh corn new varieties for demonstration and promotion. Although some other varieties have excellent indicators, their shortcomings are obvious. They can be promoted in small quantities or retained as breeding materials according to specific needs. The comprehensive evaluation results are consistent with the field demonstration cases, indicating that the introduction and screening work has achieved the expected goals, and the introduction of excellent new varieties has provided strong support for the development of the fresh corn industry in Linhai City. The new fresh corn varieties selected in this study have broad prospects for promotion and application in Linhai City and even similar ecological regions. From an economic perspective, the promotion of these high-quality varieties is expected to greatly improve the benefits of corn planting, achieve the combination of grain and vegetables, and multiple uses of one land, and help revitalize rural industries. From a social perspective, residents can taste fresher and more delicious vegetable corn products to meet the needs of consumption upgrades. At the same time, the promotion of some colorful sweet and glutinous corn can also enrich citizens' leisure agricultural projects such as "picking tours" and "experience farms", which has multiple values. In terms of brand building, Linhai City can rely on the selection of varieties to create a local fresh corn brand (such as "Linhai sweet and sticky corn"), and increase its popularity and expand its sales market through standardized production and publicity. As the scale of the industry expands, processing companies can also intervene to develop diversified products such as vacuum-packed fresh corn cobs, quick-frozen corn kernels, and corn beverages to extend the industrial chain and increase added value. It can be seen that the introduction and promotion of new varieties of fresh corn are of great significance to agricultural efficiency and farmers' income. In terms of follow-up research, there are several directions worth exploring in depth. First, in breeding research, new varieties should be selected and bred in accordance with local needs. For example, in response to the high temperature and high humidity environment in the south, modern molecular breeding technology is used to select sweet and sticky corn hybrids with high disease resistance and high resistance to lodging; gene editing and other means are used to improve corn quality genes to achieve higher sugar content or a softer taste. At the same time, attention should be paid to the nutritional fortification of fresh corn (such as high-vitamin, high-anthocyanin varieties) and the cultivation of functional corn to meet the market demand for healthy food. Secondly, in terms of cultivation research, technical experiments such as dense planting and high-yield cultivation, integrated fertilizer and water management can be carried out to find the optimal cultivation mode for each new variety. For example, in terms of planting system, explore the rotation of "fresh corn+regenerated rice" and "vegetable corn rotation" to improve land utilization. Another example is to develop precise water and fertilizer management solutions and light and simple cultivation technologies for fresh corn to increase yields while reducing inputs and environmental
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