Field Crop 2025, Vol.8, No.1, 11-19 http://cropscipublisher.com/index.php/fc 15 6.2 Economic feasibility analysis Growing fortified sweet potatoes is indeed economically beneficial-it can solve the problem of food, bring health benefits, and farmers can also make more money. Take the orange-fleshed variety NASPOT-12 for example. Under reasonable fertilization, the yield and nutrient absorption efficiency are outstanding (Lemma et al., 2023). It has low input and high output, which is particularly cost-effective for small farmers. Now that the climate is becoming more and more unstable, drought-resistant varieties are particularly important. These varieties can ensure stable harvests and reduce the risk of crop failure (Sapakhova et al., 2023). Even if the weather is bad, there is a guaranteed yield. What's more amazing is that molecular breeding technology is now used. Tools such as SSR markers can accurately screen out good varieties with high starch content and high β-carotene (Zhang et al., 2016). In this way, the breeding efficiency is improved, and the sweet potatoes grown are more in line with market demand, so they can naturally sell at a good price. 7 Case Study: Development and Application of Specific Varieties 7.1 Variety selection and background introduction To put it bluntly, breeding sweet potatoes in developing countries is about solving three problems: feeding people, eating well, and making more money. The people at the international potato center (CIP) are quite good at breeding varieties specifically for the needs of different places (Laurie et al., 2022). They got seeds from places like Mozambique and Uganda, and combined with hybrid breeding technology, they really made a lot of good varieties (Figure 2). Figure 2 Schematic diagram of the breeding cycle of the polyhybrid method (Adopoted from Laurie et al., 2022)
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