Maize Genomics and Genetics 2025, Vol.16, No.2, 60-69 http://cropscipublisher.com/index.php/mgg 66 screening is much more convenient. Of course, people in different places may have different requirements for the taste of sticky corn, but in general, this sticky and sticky corn has become an indispensable delicacy on the local people’s tables. Figure 3 Morphological characteristics of parents and their offspring (Adopted from Saha et al., 2022) Image caption: (A tassel, B silk, and C cob) in parents and improved line (DBT 17-1-1-1-35-1) from BC2F3 generation of SC11-2×UMI 1230β1+ (Adopted from Saha et al., 2022) 7.3 Application of local germplasm in stress-resistant breeding In places like Asia and Africa, farmers often have trouble growing corn because of the increasing drought and high temperatures caused by climate change. Although traditional varieties are fine in normal years, they cannot withstand extreme weather. Institutions such as CIMMYT have developed some tropical corn varieties with strong stress resistance (Prasanna et al., 2021), which have shown good results after being promoted in Africa, Asia and Latin America. But having good varieties alone is not enough. Thanks to public-private partnerships, these improved seeds can be delivered to farmers. Of course, the specific problems faced by different regions may be different, but at least there are more ways to deal with climate change. 8 Challenges and Future Directions in Fresh Corn Germplasm Research 8.1 Protection and sustainable utilization of germplasm resources The protection of corn germplasm resources is now under great pressure. Global warming and land use change have made the problem more difficult - especially for corn in tropical rain-fed areas, where extreme weather such as drought and high temperature will affect yield (Prasanna et al., 2021). Although some highly adaptable varieties have been developed through breeding, this alone is not enough. Interestingly, people like Nass have long reminded (2000) that maintaining genetic diversity is particularly important for future breeding work. Many institutions are now building germplasm banks to preserve seed vitality under optimal storage conditions (Guzzon et al., 2021), but various problems are still encountered in actual operations. Of course, the public-private partnership model has indeed helped a lot, but to completely solve the problem, more efforts may be needed.
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