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Breeding for reduced seed coat fuzz in Upland cotton (Gossypium hirsutum)
Author(s) -
INNES N. L.,
WIMBLE R. H.
Publication year - 1976
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1976.tb01702.x
Subject(s) - diallel cross , biology , lint , hybrid , coat , agronomy , germination , dominance (genetics) , heterosis , breeding program , horticulture , cultivar , genetics , paleontology , gene
SUMMARY The inheritance of seed coat fuzz was studied in two half diallel sets of crosses of Upland cotton. One with F 4 selections from an inter‐varietal cross showed a significant level of non‐additive variance attributable to dominance and non‐allelic interaction. In the other, using inbred varieties of diverse origin, the genetic control of seed fuzz was adequately accounted for by an additive‐dominance model with no interaction. Genotypic correlations between seed coat fuzz, yield and lint quality characters, calculated for both diallel sets and for two other groups of breeding material, showed good agreement within each experiment between parents and hybrids or between parents and progenies but no consistent pattern between experiments. The results serve to emphasize the risks in extrapolating correlations from one group of breeding material to another. A useful level of reduced fuzz has been obtained in selections from the AH breeding programme and the genetical investigations indicate that a further reduction may be possible, thereby leading to easier handling of seed, speedier and cheaper ginning, low levels of seed coat nep and better seed germination.