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The Journal of Heredity 1978:69(1):54-56
© 1978 The American Genetic Association 69:54-56

other

The inheritance of flower color in Macroptilium atropurpureum

B. C. IMRIE, and E. M. HUTTON

The authors are, respectively, senior research scientist and former chief of the division, C.S.I.R.O., Division of Tropical Crops and Pastures, Mill Road, St. Lucia, 4067, Australia

Abstract

Four genes controlling flower color in M. atropur pureurn have been detected. The genes labeled P1 P1 and P2 p2, and p3p3 determine the presence or absence of pigment with presence dominant to absence, and are independently inherited. The gene Pkpk determines the amount of pigment produced, such that the homozygous recessive has reduced pigment concentration, pheno typically expressed as "pink" flowers. The heterozy gote and homozygous dominant have the normal "purple" phenotype. Anthocyanidin pigments occurring in M. atropurpureum were identified as malvidin, delphinidin, and petunidin.


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