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Inheritance of Reaction to the Reniform Nematode in Soybean 1
Author(s) -
Williams C.,
Gilman D. F.,
Fontenot D. S.,
Birchfield W.
Publication year - 1981
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/cropsci1981.0011183x001100010026x
Subject(s) - rotylenchulus reniformis , biology , nematode , pest analysis , locus (genetics) , glycine , larva , gene , botany , horticulture , agronomy , genetics , meloidogyne incognita , ecology , amino acid
Inheritance of reaction to reniform nematode ( Rotylenchulus reniformis Linford and Oliveira), a pest of soybean [ Glycine max (L.) Merr.] in many areas of the southeastern U.S.A., was studied in the cross ‘Forrest’(resistant) ✕ ‘Ransom’ (susceptible). Parental, F 1 ,F 2 , and F 3 , populations were screened in soil infested with 2,000 to 4,200 reniform nematode larvae per 500cc of soil. Segregation ratios indicated that reniform nematode resistance was recessive and controlled by alleles at one locus. Intermediate infection classes in the F 2 not shared by F 1 and parental types probably resulted from environmental effects or one or more minor genes. The symbols R rn and rfn are proposed for the major gene pair.