Premium
Genetic Resistance to Boll Weevil Oviposition in Primitive Cotton 1
Author(s) -
McCarty J. C.,
Jenkins J. N.,
Parrott W. L.
Publication year - 1987
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/cropsci1987.0011183x002700020028x
Subject(s) - anthonomus , biology , boll weevil , gossypium hirsutum , backcrossing , resistance (ecology) , botany , horticulture , agronomy , genetics , gene
Boll weevil ( Anthonomus grandis Boheman) resistance was identified in several photoperiodic primitive accessions of cotton ( Gossypium hirsutum L.) in the early 1970s. Two of these primitive accessions, T‐326 and T‐1180, were each crossed to ‘Deltapine 16’ and progeny with day‐neutral (DN) flowering habit were selected. These progeny were then backcrossed twice to their respective primitive parent and selected for day neutrality after each backcross. The resulting progenies were evaluated for boll weevil oviposition using a new laboratory technique. Significantly less oviposition was found on BC 2 F 4 progeny of T‐326(DN) and T‐1180(DN) than on the control, ‘Stoneville 213’. These progeny expressed resistance as 57 and 54% as much oviposition, respectively, as on Stoneville 213 in the laboratory test; resistance also was noted by others in field tests. The level of boll weevil resistance found in the progenies of T‐326(DN) and T‐1180(DN), when combined with acceptable agronomic performance, should be of value in pest management.