Effect of parent genotype on somatic embryogenesis in Scots pine (Pinus sylvestris)

Tree Physiology
Anna-Maija NiskanenAri Pappinen

Abstract

Controlled crosses of seven Scots pine (Pinus sylvestris L.) trees produced 49 families that included both reciprocals and selfings. Embryogenic cultures were initiated from immature megagametophytes and after 6 months in maintenance culture, mature somatic embryos were produced from the surviving 166 lines. The effect of parent genotypes on the cultures was evaluated at initiation of the tissue culture period, after 6 months in maintenance culture and at embryo maturation. The effect of the maternal parent was most pronounced at culture initiation. After 6 months in tissue culture, the maternal effect had decreased and the effects of both parents were significant. By the somatic embryo maturation stage, the maternal effect was still considerable but the paternal effect was no longer detectable. There was little correlation between the ranking of mothers and fathers, indicating that the maternal effect was caused by factors other than the paternal effect. No mother x father interaction was found, indicating that mothers successful at initiation and after 6 months in tissue culture, pollinated by any of the successful fathers, produced somatic lines and mature somatic embryos.

Citations

Mar 7, 2006·Plant Cell Reports·Marie-Anne Lelu-WalterKrystyna Klimaszewska
Feb 14, 2013·Ontogenez·I N Tret'iakova, A V Barsukova
Oct 24, 2007·The New Phytologist·John Cairney, Gerald S Pullman
Feb 13, 2019·Frontiers in Plant Science·Tsuyoshi E Maruyama, Yoshihisa Hosoi
Mar 5, 2021·Vavilovskiĭ Zhurnal Genetiki I Selekt︠s︡ii·V N Shmakov, Yu M Konstantinov
Sep 26, 2021·Scientific Reports·Jing TaoYuhui Weng

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