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Registration of ‘Rhodes’ Soybean
Author(s) -
Anand S. C.
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/cropsci1994.0011183x003400010075x
Subject(s) - citation , center (category theory) , library science , cultivar , horticulture , information retrieval , biology , computer science , chemistry , crystallography
'Rhodes' soybean [Glycine max (L.) Merr.] (Reg. no. CV317, P1 561400) was developed and released by the Missouri Agricultural Experiment Station in February, 1990. This is a Maturity Group V cultivar which is resistant to Races 3 and 14 and moderately resistant to Race 4 (9) of the soybean cyst nematode (SCN), Heterodera glycines Ichinohe. Rhodes was selected from the cross J74-123/N73-520. J74123 is a sister line of 'Bedford' (8) that derived its SCN resistance from 'Forrest' (7) and PI88788 (1). N73-520 is a selection from the cross 'Tracy' (3)/'Ransom' (2). Early-generation selection and testing were done at the Delta Center of the University of Missouri at Portageville, MO. The F2 population of the cross was grown in the cyst nematode nursery at the Rhodes Farm near Clarkton, MO. Individual F3 plants were chosen and evaluated in the greenhouse for resistance to SCN. Resistant progenies in the F4 were again planted in the cyst nematode nursery. The progeny of an F5 plant was bulked for initial testing and designated S80-2959. Since S80-2959 was segregating for resistance to the root-knot nematode [Meloidogyne incognita (Kofoid & White) Chitwood] single plant progenies were developed and screened and resistant selections were bulked to develop breeder seed. Rhodes was evaluated in the Uniform Soybean Tests—Southern Region from 1984 through 1986 (4,5,6), and compared against Forrest (7) and 'Essex' (10). The seed yield of Rhodes was almost the same as Forrest and slightly better than Essex. In eleven station tests conducted in Portageville, MO., Rhodes exceeded the seed yield of Bedford by 6 to 7%. Rhodes will be suitable for planting in the SCN infested fields in Southeast Missouri, Arkansas and Tennessee where Maturity Group V cultivars are planted. Rhodes has white flowers and tawny pubescence with tan pod walls. It is a Maturity Group V determinate cultivar and matures 2 d earlier than Forrest. Rhodes has a plant height of 90 cm, which is 5 cm shorter than Forrest and 10 cm shorter than Bedford. It also has greater lodging resistance than Bedford. Rhodes is resistant to SCN Races 3 and 14 and is moderately resistant to Race 4. It has a moderate level of resistance to root-knot nematode and is susceptible to Sudden Death Syndrome, caused by Fusarium solani (Mart.) Sacc. Rhodes has 41 Ig kg-' seed protein and 206g kg-' oil, compared with 401g kg-' seed protein and 209g kg-' oil of Forrest. Seed of Rhodes are yellow with brown hila and have a 100-seed weight of 14.3 g, compared with 12.8 g for Forrest. Rhodes was named after Mr. Roger F. Rhodes of Clarkton, MO, who donated a 100-acre farm to the University of Missouri. The farm, now called Rhodes Farm, is the site of the cyst nursery for screening and breeding soybean. The Missouri Agricultural Experiment Station will be responsible for maintaining breeder seed. The seed will be maintained as one generation each of breeder, foundation, registered, and certified seed. Foundation seed will be produced and distributed by Missouri Foundation Seeds, Department of Agronomy, 210 Waters Hall, University of Missouri, Columbia, MO 65211. A small sample of seed of Rhodes may be obtained from the author for research purposes for at least five years.