Abstract
M1 plants derived from crosses using pollen irradiated with 20 Krad of γ-rays were selfed and backcrossed reciprocally to N rustica, V27. A cytogenetical examination of these progenies revealed the persistence of considerable aneuploidy and structural aberrations. It proved possible to detect several aberrant chromosomes in the M1 parents and observe their transmission rates to the offspring. Analysis indicated some post-meiotic selection against these damaged, paternal chromosomes. The intensity of this selection, however, is insufficient to account for the maternal trend previously reported for the M2 generation in N. rustica. The preferred interpretation is that the mutational damage may lead to a loss in vigour during the M2 and equivalent generations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
