According to Cochran and Harpending (2013), mothers transmits on average a number $x$ of new mutations to their offspring. This number $x$ is independent of the age of the Mother. Fathers, however transmit a number of new mutations to their offsprings that is very much dependent on the age of the father for developmental reasons. In short (and probably poorly stated due to my lack of knowledge in physiology), spermatogenesis is a continuous process that occurs during the lifetime of the individual while the creation of ovules occurs once and are then stocked.
According to Kong et al.(2012), in humans the mother transmit on average $15$ new mutations and the father transmit on average $25 + 2(g-20)\space\space$ new mutations, where $g$ is the age of the father. For example, a 30-year-old father transmits $25 + 2(30-20) = 45\space\space$ new mutations. (This approximation holds only for men older than 20 years).
Question: How about plants?
Do you think that in plants too, male and female organs
(or individuals for (gyno/andro)diocious species and eventually sequential hermophroditic species)transmit a different number of new mutations for similar developmental reasons?
Do you think that in plants the number of new mutations is age-dependent in males but not in females alike in humans?
Do we have any estimate of the sex and age-specific number of new mutations transmitted in plants?