To identify some significant phenotypic characteristics of maize(zea mays) seeds, we have obtained Red, Green, Blue(RGB) digital image data from 82 recombinant inbred lines. Based on the collected image data, their morphological and color data were analyzed, and seven significant parameters were selected, including area, perimeter, length, width, circularity, roundness, and surface texture. The extracted RGB data were converted into color hex codes to visualize the representative colors of the seeds. These visualized colors were categorized into six groups: gray, yellowish white, yellow, grayish orange, purple, and brown. The results of maize seed phenotypic analysis using the RGB digital images in this study will serve as a useful tool for constructing a database of seed phenotyping database and establishing a standardized classification system.

A new single cross waxy corn (Zea mays L.) hybrid, “Jomichal” with white kernel was developed by the Maize Experiment Station (MES), Gangwon-do Agricultural Research and Extension Services (GARES) in 2005. This hybrid, which has early flowering, short-cul

A new single cross waxy corn (Zea mays L.) hybrid, “Mibaek 2” with white kernel was developed by the Maize Experiment Station (MES), Gangwon-do Agricultural Research and Extension Services (GARES) in 2005. This hybrid, which has good eating quality, high

A new single cross waxy corn (Zea mays L.) hybrid, “Miheugchal” with black kernel was developed by the Maize Experiment Station (MES), Gangwon-do Agricultural Research and Extension Services (GARES) in 2004. This hybrid, which has good eating quality and

A single cross hybrid “Gangilok” is an yellow semi-dent maize (Zea mays L.) developed by the Maize Experiment Station at Gangwon-do Agricultural Research and Extension Services in 2005. “Gangilok” has high yield of dry matter, total digestible nutrients (

Zea mays L.) developed by themaize breeding team at the National Institute of Crop Science (NICS), RDA in 2005. This hybrid, which has high yields of drymater, total digestible nutrient (TDN) and grain, was derived from crossing two inbred lines, KS140 an

A single cross, Jangdaok, is an yellow dent maize hybrid (Zea mays L.) developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2003. This hybrid, which has a high yield of dry matter, total digestible nutrients (TDN)

A single cross, Pungmiok is yellow dent hybrid maize (Zea mays L.) developed by the corn breeding team at the National Crop Experiment Station (NCES), RDA in 2002. This hybrid, which has a high yield of dry matter, total digestible nutrients (TDN), is mad

A new single cross waxy corn hybrid, 'Mibaekchal' with white kernel was developed by the Maize Experiment Station (MES) of Gangwondo Agricultural Research and Extension Services (GARES) in Hongcheon in 2001. 'Mibaekchal', which has high yield and good gra

A single cross hybrid, 'Heugjeomchal', is a white and black bicolor waxy corn (Zea mays L.) developed by the Maize Experiment Station (MES), Gangwondo Agricultural Research and Extension Services (GARES) in Hongcheon in 2000. 'Heugjeomchal' was made by cr

A new single cross hybrid, 'Dumechal', is a white waxy corn (Zea mays L.) developed by the Maize Experiment Station(MES) of Gangwondo Agricultural Research and Extension Services (GARES) in Hongcheon in 1999. 'Dumechal' was made by crossing two inbred lin

In order to determine the optimum harvest time for the seed production of inbreds and hybrids in silage corn, the ears of sib-pollinated 'KS5', 'KS7rhm', and 'Ga209' and cross-pollinated 'KS5' ~times 'KS6' (Suwon19), 'KS7 rhm' ~times 'KSl17' (Suwonok), and 'Ga209' ~times 'DB544'(Kwanganok) were harvested at the one-week intervals from 4 to 10 weeks after silking. The optimum harvest time for the seed production for 'KS5', 'KS5' ~times 'KS6', 'KS7 rhm', and 'KS7rhm' ~times 'KS117' was 7 weeks after silking considering both emergence rate and plumule growth in cold test. Although earlier harvested seeds showed similar germination rate as the seeds harvested at the optimum time at 25~circC , their emergence rate were lower in cold test. Seed weight and α -amylase activity of earlier harvested seeds were lower compared to those of seeds harvested at the optimum time, while leakage of total sugars and electrolytes were higher. However, the later harvested seeds showed lower germination rates at 25~circC and emergence rates in cold test probably due to the lower α -amylase activity although they showed increased seed weight and reduced leakage of total sugars and electrolytes. In contrast, the emergence rate of 'Ga209' and 'Ga209' ~times 'DB544' in cold test increased up to 10 weeks after silking probably due to the increased seed weight and α -amylase activity and reduced sugar and electrolyte leakages during the germination. The cross-pollinated F1 hybrid seeds showed higher germination and emergence rates at 25~circC and in cold test, and higher plumule growth and α -amylase activity compared to those of sib-pollinated inbreds.