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Genetic variability in plants regenerated from in vitro culture of sunflower ( Helianthus annum L.)
Author(s) -
Barotti S.,
Fambrini M.,
Pugliesi C.,
Lenzi A.
Publication year - 1995
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1995.tb00813.x
Subject(s) - helianthus annuus , biology , sunflower , variegation (histology) , stamen , homeotic gene , botany , shoot , backcrossing , mutant , tissue culture , helianthus , in vitro , chlorophyll , genetics , horticulture , gene , pollen
In vitro regenerated sunflower ( Helianthus annuus L.) plants (R 1 ) were self‐fertilized and the R 2 generation was evaluated for qualitative traits. A broad range of phenotypic variation was observed and mutation frequencies were calculated. Some in vitro induced variant phenotypes were similar to known spontaneous or induced mutations in sunflower, while others were new. Chlorophyll and carotenoid deficiencies, chimaerical variegation, fasciated stem and capitulum, abnormal shoot development, and other morphological variations, were noted. Substitution of anthers with petaloid structures in a disk‐floret mutant indicates a possible homeotic mutation induced by in vitro tissue culture.