Preliminary results of an inheritance study of genetic incompatibility in apricot

摘要

Progenies of 11 apricot (Prunus armeniaca) cross combinations were studied to determine the inheritance of the genetic incompatibility trait. Segregating progenies were studied by bagging a sufficiently high number of flowers at the balloon stage and determining the percentage fruit set several weeks later. Results indicated that a monofactorial system with a multiallelic series controls genetic incompatibility. A dominant condition would allow pollen tube growth in any style and pollen tubes wouldreach the ovules. A recessive condition would inhibit pollen tube growth if the same allele was present in the pollen grain and in the pistil.