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Heritability of Verticillium Wilt Tolerance in Crosses of American Upland Cotton 1
Author(s) -
Roberts Carl L.,
Staten Glen
Publication year - 1972
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/cropsci1972.0011183x001200010021x
Subject(s) - verticillium wilt , biology , heritability , verticillium , verticillium dahliae , agronomy , gossypium , horticulture , genetics
Broad‐sense heritability estimates of tolerance to Verticillium wilt [ Verticillium albo‐atrum (Reinke and Berth)] under severe field exposure in American Upland cotton ( Gossypium hirsutum L.) were compared using F 2 and F 3 generations of tolerant ✕ susceptible crosses. Heritability estimates varied from 0 to .833, depending upon exposure level, generation tested, and type of parental tolerance present. Tolerance to Verticillium wilt was found to be recessive for the crosses studied. Selection based on progeny row yield was effective when Verticillium wilt was severe. Susceptible F 2 plants produced homozygous susceptible F 3 rows but progeny testing of tolerant F 2 plants was necessary to detect escapes.