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Evaluation of Early Generation Soybeans for Resistance to Soybean Looper 1
Author(s) -
Kilen T. C.,
Hatchett J. H.,
Hartwig E. E.
Publication year - 1977
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/cropsci1977.0011183x001700030014x
Subject(s) - biology , cultivar , greenhouse , horticulture , agronomy
The soybean [ Glycine max (L.) Merr.] cultivar ‘Davis’, × P.I. 229358, and F 1 and F 2 generations from the cross Davis Χ P‐I‐ 229358 were grown in a greenhouse and rated visually for leaf‐feeding damage by soybean looper [ Pseudoflusia includens (Walker)]. Parents and 365 F 3 lines were then rated for leaf‐feeding damage by soybean looper in a field cage. The rating on F 2 plants in the greenhouse was significantly correlated (r = 0.52) to the rating of their F 3 lines in the field cage. The average rating of F 3 lines changed 0.6 unit for each unit change in the rating of F 2 plants (b = 0.61). Data from parents and F 1 plants suggested no dominance for resistance to feeding by soybean looper. The F 2 distribution was skewed in the direction of the susceptible parent. The study indicated that large numbers of F 2 plants segregating for reaction to leaf‐feeding by soybean looper may be effectively evaluated in the greenhouse.