Post-pollination endogenous phytohormone levels in reproductive organs in 2 interspecific Arachis crosses differing in compatibility [post]

Jia Kai Li, Zhi Wei Wang, Zhen Yang, Guo Sheng Song, Xiu Zhen Wang, Chuan Tang Wang
2022 unpublished
Wild Arachis species are of great value to the genetic improvement of the cultivated peanut; however, incompatibility hinders the utilization of the species outside section Arachis. Endogenous phytohormone imbalance was hypothesized but is yet to be confirmed. Using UPLC-ESI-MS/MS, we were able to determine the phytohormone levels in flower bases 3 days after pollination and pegs/pods 5 and 10 days after soil penetration. The results showed that as far as the significantly changed phytohormones
more » ... were considered, with the advancement of reproductive development, the proportion of down-regulated auxins and cytokinins gradually increased. Significantly reduced levels of gibberellins in pegs/pods were also recorded. The study suggested that to get desirable results in overcoming incompatible obstacles in wide crosses in Arachis, early post-pollination application of hormone mixtures incorporating auxins, cytokinins and gibberellins should be beneficial.
doi:10.21203/ fatcat:goi7udbb7rbgjcnit7puns5mra