From the now defunct Indoor Citrus & Rare Fruit Society, Summer 1988, Issue 26 bulletin here is some good information regarding whether a citrus plant will grow "true to seed": "Most citrus species and varieties are polyembryonic and produce more than one seedling per seed. Most of the seedlings will be nucellar, genetically identical to the seed parent. Out of the several seedlings however, one may be the gametic or zygotic seedling, resulting from the pollination by the pollen parent and will be different from either parent. Thus to be certain that the selected seedlings will be characteristic of the variety, it is necessary to choose the nucellar ones.
It is not difficult to tell the difference between the gametic and nucellar seedlings. As a rule, the gametic seedlings are less vigorous than the nucellars and have characteristics that differ from the nucellars. If you plant several seeds, therefore, select the most vigorous of the "look alikes". You will have a high degree of assurance that you have chosen the nucellar, true-to-type seedlings for growing on to fruiting" Hope this is helpful.

This interests me.

I am starting some citrandarins from seed. I've read that this particular citrus hybrid gives off at least 50% zygotic seedlings.

So, I assume I should throw out all the seedlings that are single plants, and keep only the seeds that are putting out multiple seedlings, right? Can we assume that all but one of those 'multiples' are definitely clones?

But should I also assume that at least one of them MIGHT be a zygotic plant?

Should I be able to tell by plant size alone whether it's zygotic? Or do I wait until plants get larger and look for differences in leaf shape? Are there any other ways to tell?

I may start a new thread on this subject.

> Are there any other ways to tell?
Looking is good for finding a difference but smell and taste of the leaves are much more efficient.