Soyasaponins A1 , DDMP-conjugated group B soyasaponins αg~;and~;βg , non-DDMP counterpart soyasaponin I, II+III, and DDMP moiety were quantified in the large-, midium-, and small-seed soybean varieties. Protein contents were ranged from 38.1% to 41.8%, and oil contents were ranged from 15.5% to 18.9%, respectively. Oil contents in the large-seed varieties were significantly higher than those of medium- and small-seed varieties. Among detected soyasaponin peaks, βg was a major soyasaponin in DDMP-conjugated group B soyasaponins followed by soyasaponin I, DDMP moiety and A1 . Soyasaponin concentration among different seed size soybean varieties. The soyasaponin concentration of mediumseed (4014.5~mug/g ) was slightly higher than those of largeseed (3755.0~mug/g ) and small-seed varieties (3620.3~mug/g ), however, the differences was statistically not significant. The composition rates of soyasaponins in the large-size seeds were 9.4% of soyasaponin A1 , 26.5% of DDMP-conjugated soyasaponins, 49.9% of non-DDMP counterpart soyasaponins, and 14.2% of DDMP moiety, respectively. Similar results were observed in the composition ratios of middle- and small-size seeds. Oil content and C:N ratio showed the significant positive correlations with total soyasaponin concentration, while the 100-seed weight, fiber, and ash contents showed the negative correlations with total soyasaponin but statistically not significant. It was noted that protein contents didn't have any relationship with group A, group B, DDMP moiety, and total soyasaponin. This fact suggested that protein contents are not affects the variation of soyasaponin concentration.

“Daeyou” was developed at the National Crop Experiment Station, RDA in 2001 through the crossing lines of high oil content Yeupsildlkkae and Heukim's hybrid line and it was combined by Pakesa and low seedcoat ratio variety Suwon 8 in 1991. Daeyou has grey

“Kwangim” was developed at the National Crop Experiment Station, RDA in 2001 through induced mutations breeding by EMS treatment on the Suwon 38 perilla seeds in 1993. Kwangim has dark brown seedcoat colour with abundant and long clusters. Anthesis of Kwa

“Dasil” was developed at the National Crop Experiment Station, RDA in 2001 through induced mutation by γ-ray irradiation on local perilla accession “Yechon” in 1994. Dasil is characterized as short plant height, dark-brown seedcoat color, medium size of s

The conductivity test is a measure of electrolytes leakage from plant tissue. The shorter the maturation period after heading was the greater electrical conductivity (EC) of rice seed. The polymer-coated seed was not different in EC compared with non-coated seed. As soaking time of rice seed increased, EC increased gradually. The EC varied from 9.9 to 20.7~mu S cm-1g-l for control plots and from 21.3 to 41.7~mu S cm-1g-l for heat-killed seeds which were produced by autoclaving seeds at 121~circC for 20 minutes. The germination speed (the rate of 5th day) of rice seed was 94% at control plot, 83% at low temperature and 20% at high temperature. Besides, germination percentage was 95% for the control, 92% for the low temperature treatment and 39% for the high temperature treatment. The EC was negatively correlated (r=-0.771** ) with germination percentage at low temperature. Water uptake in seeds of 30, 40, 50 days after heading (DAH) was greater than that of 20 DAH. Plant height of seedlings was 9.84 cm for the control but 4.32 cm for the high temperature treatment, and the tallest for polymer-coated seed. Dry weight of seedlings was 0.841 g for the control and 0.287 g at high temperature. Besides, the polymer-coated seed was heavier than non-coated seed. The number of roots was largest from 40 to 50 DAH and polymer-coated seed, but was decreased from 20 to 30 DAH. The length of roots was 20.52 cm at control plot and 19.89 cm polymer-coated seed but 8.68 cm for the low temperature treatment and 7.28 cm for the high temperature treatment.