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Asian Journal of Plant Sciences

Year: 2010 | Volume: 9 | Issue: 8 | Page No.: 463-470
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Authors

S. Simla

K. Lertrat

B. Suriharn

Keywords

Research Article

Carbohydrate Characters of Six Vegetable Waxy Corn varieties as Affected by Harvest Time and Storage Duration

S. Simla, K. Lertrat and B. Suriharn
Six varieties of vegetable waxy corn (Zea mays var. ceratina) popular among growers and consumers in Thailand were analyzed for their carbohydrate compositions at different harvest times from 15 days after Pollination (DAP) to maturity and a corn variety was stored at different durations. All sugar compositions increased with Days after Pollination (DAP) to the peak and then declined, whereas total starch, amylopectin and phytoglycogen compositions increased with DAP and were highest in mature kernels. The accumulation timings of carbohydrate compositions were different among varieties and compositions. Suitable harvest times can vary between 17 and 25 DAP. The highest harvest durations were observed in Tien Baan Kao and Big White 852 being 9 and 7 days, respectively. Storage of waxy corn under ambient conditions resulted in rapid loss of sugar contents, whereas total starch, amylopectin and phytoglycogen were increased. Low storage temperature is required to maintain shelf-life of waxy corn products. These varieties are highly recommended for commercial production and can be used as germplasm sources for waxy corn improvement.
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