This study investigated on the chemical components, quality characteristics, antioxidant compounds, and activity of maize hybrids according to the cultivar, and breeding maize seeds crossed with seed and pollen parent. The moisture, crude fat, crude ash, crude protein, carbohydrate, and amylose contents of maize hybrids were significantly different among cultivars, and seeded and pollinated maize. The L-, a- and b-value of maize hybrids were 39.81~47.21, －0.01~0.55 and 5.85~18.47, respectively. Water binding capacity, water solubility index and swelling power were 123.29~153.32, 4.69~5.76 and 20.11~21.47%, respectively. The phenolic compounds and radical scavenging activity of maize hybrids were significantly different among cultivars, and seeded and pollinated maize. Total polyphenol and flavonoid contents of maize hybrids were 1,335.41~1,876.29 μg/g and 184.24~453.95 μg CE/g, respectively. The DPPH and ABTS radical scavenging activities were 171.75~239.16 and 299.44~364.09 mg TE/100 g, respectively. As a result, it could be used as a basic data for cultivating phenol compounds and antioxidant activity in maize breeding.

Brassica napus L. (Brassicaceae) plantation has increased as its seed is the primary source for bio-diesels. This study was conducted Male sterile (MS) line (cv. 'Sun-Mang') to pollen parent (cv. 'Mokpo 64') ratio of rape plants on fatty acid compositions of six sequential stages and yield performances. Ratio of MS line to pollen parent was followed, 4:2, 10:1, and 10:2, respectively. Seeds of six sequential stages (35, 40, 45, 50, 55, and 60 days after flowering) were collected and determined using SEED FAME ESTIMATION. The results showed that oleic acid content (C18:1) of the MS to pollen parent ratio (4:2) relatively increased up to 60 days after flowering compared to other ratios. Other fatty acid compositions such as palmitic acid (C16:0), stearic acid (C18:0), linoleic acid (C18:2) and linolenic acid (C18:3) contents decreased during seed maturation period. Seed weight (1000 seeds) of MS to pollen parent ratio (4:2) was higher than other treatments. These results suggest that fatty acid compositions and seed weight was affected by ratio of MS line to pollen parent. For rape seed production, a suitable ratio of MS line to pollen parent will be required to cultivate rape plantations.