Abstract:

Huangjinxiaoyumi is a national geographical indication agricultural product，belonging to fresh-eating waxy corn，and is characterized by its small ear size and sweet，glutinous taste. In this study，two fresh-eating waxy corn cultivars，Suyunuo 5 and Jinnuo 262，were used as controls to compare the ear shape，kernel traits，and kernel sensory quality of Huangjinxiaoyumi harvested at seven dates across two seeding dates（spring and summer）. The results showed that at 17-20 days after pollination，Huangjinxiaoyumi had ear length of 10.5-11.8 cm，ear diameter of 2.4-3.0 cm，and fresh hundred-kernel weight of 14.5-16.5 g，all of which were lower than those of Suyunuo 5 and Jinnuo 262. In addition，Huangjinxiaoyumi exhibited lower kernel moisture content，higher hardness，higher soluble solids content，and stronger aroma，while its sweetness and tenderness were greatly influenced by seeding date and harvest date. Huangjinxiaoyumi also featured a short development period，rapid changes in kernel quality，and high sensitivity to climatic conditions. Therefore，appropriate sowing date and timely harvest are important measures to improve the quality stability of Huangjinxiaoyumi and ensure the healthy development of its industry.

Key words: Huangjinxiaoyumi, seeding date, harvest date, waxy fresh corn