Author:
Ayotte R.,Harney P. M.,Christie B. R.
Abstract
Self-incompatible and self-compatible lines of Brassica napus L. were crossed and the compatibility status of the F1 and F2 progeny assessed. Compatibility was established by measuring silique and seed set and by microscopic examination of self-pollen behaviour on the stigma and within the style of flowers. Microscopic evaluation was found to be unreliable in determining whether seed set would occur on a plant following self-pollination. The F1 data could not be interpreted because turnip mosaic virus in the greenhouse killed many plants and may have affected the compatibility reaction of the rest. Silique set data for the F2 showed one line (Z) segregated 3:1 self-incompatible to self-compatible, indicating only one locus involved. The 10:6 self-compatible to self-incompatible ratio, obtained for a second line (R) can be explained in the same manner if a dominant modifier (M), which interacts only with S-allele heteozygotes, is also present.Key words: rutabaga, Brassica napus, self-incompatibility, S alleles, genetic.
Publisher
Canadian Science Publishing
Subject
Cell Biology,Plant Science,Genetics
Cited by
6 articles.
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