Genetic control of somatic embryogenesis induction in Eucalyptus globulus Labill.

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Pinto, G (Author) Other; Park, YS (Author) Other; Neves, L (Author) Other; Araujo, C (Author) Other; Santos, C (Author) Other

Journal

Title: Plant Cell Reports

Vol. 27

Pages: 1093-1101

ISSN: 0721-7714

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 21 Citations

Scopus - 23 Citations

Other information

Authenticus ID: P-003-Z5S

DOI: 10.1007/s00299-008-0532-y

Abstract (EN): A reproducible protocol for somatic embryogenesis (SE) induction in Eucalyptus globulus from mature zygotic embryos is available since 2002. However, for the use of SE in tree breeding programs, the frequency of SE initiation needs to be improved and controlled, and this was investigated in 13 open-pollinated (OP) families over three consecutive years. A diallel mating design with five parent trees was used to study genetic control of SE induction. Results showed that SE induction varies across E. globulus families and over the years of seed production tested. Somatic embryogenesis was initiated on explants from 84% of the OP families tested in 2002 and 100% of the families tested in 2003 and 2004. The year 2003 gave best results for percentage of induction and total number of somatic embryos produced. Results concerning genetic control showed that SE induction is under the control of additive genetic effects, as 22.0% of variation in SE initiation was due to general combining ability (GCA) effect, whereas 6.4% was due to maternal effects. Neither specific combining ability (SCA) nor reciprocal effects were significant.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9