Seedling size comparison

An interesting thing is hapening in the Japanese Morning Glory grow out now underway.  The cotyledons of one princess plant seedlot are very small when compared to the other princess seedlings growing.  These are F3 plants and I don’t recall the F2 plant starting this small.  My guess at this point is that this is the first generation of seeds showing many of the true characteristics and potential of this particular line.  If you think about it, the F2 seed is produced on a normal sized plant and the seed is generally speaking normal sized.  This particular normal sized seed produced a very small princess plant, even though the cotyledons were pretty much normal sized.  The seed that resulted in the plant growing now was produced on the small statured plant and was smaller in size as well.  I have four plants growing from this seedlot and they all are consistent in this size.  They are also much smaller than the other princess plants growing.

This picture shows the size comparison of cotyledons from a normal sized plant of Q0663, a regular princess plant from the 385-40-01 line and the very small cotyledon of the 385-40-19 line.  All plants are the same age.

Cotyledon size comparison

Cotyledon size comparison


2 thoughts on “Seedling size comparison

  1. Hi Arlan,

    I wonder if this is tsubame? I was told that tsubame is a demono, and is not inherited via simple genetics, and throws variants…very hard to control.

    Unlike other demonos like the willow, maple, and feather, the chances of getting tsubame is less than 25% (according to a friend).

    It’ll be interesting to see how it’ll grow =).


    • Hi Eliz,

      Welcome to the site!

      When the first cotyledon showed I wondered as well if the miniature (mi) gene was showing itself. Then the second, third and fourth seedling emerged with the same characteristic! The odds for this to happen with tsubame are not good! To my knowledge I have no plants that carry tsubame…but that is not much assurance! As tsubame is sterile I’ll eventually know.

      I have read that one of the princess plants maintained by Kyushu, Q0758, is reported to have “very small cotyledons”. My current thinking is that this may be a trait that is showing in this plant.

      Here are my Journal entries for the parent of these seedlings. – Arlan

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