Premium
Registration of N79‐2077‐12 and N87‐2122‐4, Two Soybean Germplasm Lines with Reduced Palmitic Acid in Seed Oil
Author(s) -
Burton J. W.,
Wilson R. F.,
Brim C. A.
Publication year - 1994
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1994.0011183x003400010080x
Subject(s) - germplasm , bluff , citation , crop , state (computer science) , biology , library science , mathematics , horticulture , computer science , mathematical economics , algorithm , agronomy
Two soybean [Glycine max (L.) Merr.] lines, N79-2077-12 (Reg. no. GP-154, P1 568260) and N87-2122-4 (Reg. no. GP155, P1 568261) were released in August 1990 and November 1991, respectively, by the USDA-ARS in cooperation with the North Carolina Agricultural Research Service. Concentration of palmitic acid in the seed oil of N79-2077-12 is =60 mg goil, and that of N87-2122-4 is =53 mg goil. The palmitic acid concentration in oil of standard cultivars is -100 mg goil. The low-palmitic line N79-2077 was derived from the fifth cycle of a high oleic acid recurrent selection population (2). Parents of this population were P1 90406, P1 92567, and N692774. The parent line N69-2774 is a maintainer line for the male-sterile gene msl (1). It was derived from an outcrossed male-sterile plant that was discovered in a farmer's field. Thus, the genetic origin is unknown. Seed of a single-plant selection from N79-2077 in 1985 was bulked and grown each year from 1986 through 1990. This line was designated N79-2077-12. Assuming no out-crossing occurred in N79-2077 prior to 1985, N79-2077-12 would be an F9-derived line. Average palmitic acid concentration for the four years (1987-1990) was 60 mg g-' oil (Table 1). The low-palmitic line N87-2122-4 is an F6-derived line from a mating between N78-2245 and N79-2077. N78-2245 is a line with normal palmitic acid, increased oleic acid, and reduced linolenic acid levels. Both N78-2245 and N79-2077 were derived from the fifth cycle of the same high-oleic-acid recurrent selection population (2). Average palmitic concentration of N87-2122-4 for the four years (1987-1990) was 53 mg goil (Table 1). The parent, N78-2245, had average palmitic acid levels of 100 mg goil. Compared to N79-2077-12, the seed oil of N87-2122-4 has lower concentrations of palmitic and linolenic acids and a higher concentration of oleic acid (Table 1)N79-2077-12 has white flowers and grey pubescence. Seeds are yellow, with buff hila and shiny seed coat luster. Average seed size is 17.5 g 100-' seeds. In a full-season planting in North Carolina for years 1986 to 1989, its average flowering date (18 July) was 3 d earlier than the standard cultivar Essex. The average maturity date (8 October) was equal to that of Essex. The line, N87-2122-4, has purple flowers and grey pubescence. Seeds are yellow, with buff hila and shiny seed coat. Average seed size is 19.6 g 100 seeds". On full-season planting in North Carolina for the years 1988 to 1990, its average flowering date (14 July) was 6 d earlier than the standard cultivar Essex. The average maturity date (30 September) was 7 d earlier than Essex. Neither line has been tested for yielding ability. Fifty seeds each of N79-2077-12 and N87-2122-4 will be furnished for at least five years on request from the Department of Crop Science, North Carolina State University, Raleigh, NC 27695-7631.