http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A maize inbred line “Euisung” resistant to black streaked dwarf virus
Bongho Choe(崔鳳鎬),Keun Yong Park(朴根龍) 한국육종학회 1986 한국육종학회지 Vol.18 No.4
The black strecked dwarf virus(BSDV) is one of the most destructive maize virus diseases in southern part of Korea. As one measure to counterattack the disease, a breeding program was initiated in 1979 at the Chungnam National University in cooperation with the Crop Experiment Station, Rural Development Administration. The breeding materials used were all collected from Korean local areas. After a series of breeding efforts, an inbred line, Euisung, was developed and screened out as a resistant line from field screening tests conducted at two locations in 1986. The Euisung inbred line had no apparent disease symptoms throughout the growth period, while susceptible lines were all stunted during early stage of growth. The genetic nature of the disease resistance in the line is not known yet, but the the Euisung line may have a great breeding potential for developing disease resistant hybrieds in Korea.
Rak Chun Seong(成樂春),Jai Sung Shim(沈載成),Keun Yong Park(朴根龍) 한국육종학회 1988 한국육종학회지 Vol.20 No.2
Germination and seedling elongation of three hybrids and their five inbreds of corn [Suwon 19 : KS 5 x KS 6, Hoengsongok : (KS 15 x KS 16) KS 5, and Jinjuok : (KS 15 x KS 16) Ga 209]were measured at two temperatures (15 and 30 C) and four polyethylene glycol (PEG) 10,000 solutions (0, 20, 30 and 35g/100gH₂o). Adjustments of PEG 10,000 solutions were based on water potentials of 0.0, -0.5, -1.1 and -1.5 MPa at room temperature. Observations were taken at 3, 6, 9 and 12 days for 15 C and 1, 2, 3 and 4 days for 30C. Fifteen seeds of each of three corn hybrids and their five inbreds were placed on Whatman No. 1(9cm) filter paper in plastic petridishes, and adjusted to 15 ml of the proper PEG 10,000 solution supplemented with 0.2 percent thiram using automatic syringe. The dishes were covered with cap. The seeds were germinated at a constant temperature of 15 or 30 C under dark conditions for programmed period. Seedling moisture content and seedling length of three corn hybrids and their five inbeds were decreased as PEG concentration increased both at 15 and 30C. Varietal differences in seedling moisture content and seedling length of corn were found among eight hybrids and inbreds at temperatures of 15 and 30 C. Mean seedling moisture content of inbred KS 16 showed the highest, and inbred KS 15 was observed the lowest among eight hybrids and inbreds. however, mean seedling lengths of three hybrids were greater than inbreds from 20 to 30g/100g water of PEG concentrations. Hybrid Jinjuok showed the greatest mean seeding length among three hybrids. The results of this study indicated that germination test of corn seeds in aqueous solutions of PEG has potential for screening corn genotypes for improved emergence at moisture stress.