Orange, yellow and white-cream: inheritance of carotenoid-based colour in sunflower pollen

Plant Biology
M FambriniC Pugliesi

Abstract

Inheritance of pollen colour was studied in sunflower (Helianthus annuus L.) using three distinct pollen colour morphs: orange, yellow and white-cream. Orange is the most common colour of sunflower pollen, while the yellow morph is less frequent. These two types were observed in the inbred lines F11 and EF2L, respectively. White-cream pollen is a rare phenotype in nature, and was identified in a mutant, named white-cream pollen, recovered in the R(2) generation of an in vitro regenerated plant. The F11 inbred line was used as starting material for in vitro regeneration. The carotenoid content of these three pollen morphs differed, and was extremely reduced in white-cream pollen. The phenotype of F(1) populations obtained by reciprocal crosses revealed that the orange trait was dominant over both white-cream and yellow. Segregation of F(2) populations of both crosses, orange x yellow and orange x white-cream, approached a 3:1 ratio, indicating the possibility of simple genetic control. By contrast, a complementation cross between the two lines with white-cream and yellow pollen produced F(1) plants with orange pollen. The F(2) populations of this cross-segregated as nine orange: four white-cream: four yellow. A model conforming ...Continue Reading

References

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Citations

Feb 24, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jianrang LuoYanlong Zhang
Mar 9, 2019·The Journal of Heredity·Jordan A DowellChase M Mason
Apr 17, 2020·Frontiers in Plant Science·Adriana Kenđel, Boris Zimmermann

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