Abstract:

A comparative experiment of sweet corn quality was carried out to analyze the characters, quality and taste of the varieties. The sweet corn varieties suitable for popularizing in Huhhot were screened out. The whole growth period of sweet corn varieties was observed according to the plot division test of the experimental base. Four groups of samples were randomly selected for each variety, and 10 plants were selected in each group for observation. The growth status and yield structure of each variety were measured, and the taste of each variety was comprehensively evaluated according to the field evaluation of experts. The results show that among the 15 sweet corn varieties, ‘Wancaitiannuo 118’, ‘Hetiannuo 2’, ‘Jinnuo 628’, ‘Wannuo 2018’ and ‘Meiyujiatiannuo 36’ are of uniform size, full grain, neat rows, sweet and glutinous and delicious taste and good quality. ‘Hetiannuo 2’ belongs to taste corn, but the spike length is small. Therefore, it is not suitable for farmers who prefer sweet corn ear length and yield. ‘Meiyujiatiannuo 36’ is a kind of early maturing corn. The taste is waxy and sweet. However, due to its short growing period, planting must be combined with marketing to prevent premature senescence. ‘Wancaitiannuo 118’, ‘Jinnuo 628’ and ‘Wannuo 2018’ belong to medium maturity varieties, which could be popularized in a large area. Considering the characters of the sweet corn varieties, the longer the growing period, the better the taste. In general, the early mature sweet corn has a poor taste, while the middle late maturing sweet corn has a better taste. The sweet corn of hybrid line is more sweet and glutinous than that of the inbred line sweet corn. The sweet corn is affected by unfavorable weather conditions such as drought, high temperature and cloudy days. Bad water and fertilizer condition in the growth period is not conducive to the rapid growth of sweet corn. High temperature or cloudy days in flowering or milk ripening period could affect pollination and seed set.

Key words: sweet corn, character, quality, taste, growth period, growth status, yield structure, weather conditions