Dark Pigmented Leaves in the Japanese Morning Glory

50507-166-19 showing dark pigmentation

50507-166-19 showing dark pigmentation

While waiting for my Japanese Morning Glory plants to grow large enough to flower, I tend to spend time studying the leaves and their habit of growth.  I have a small F2 grow out underway from a cross of a possible Princess plant with pink flowers and a yellow heartshaped leaved, blue flowered plant.  From this series of 23 plants I am noticing something that is unusual to me.  Many of the seedlings are showing significantly more dark pigmentation in their leaves.  In the yellow leaved plants I’m noticing pigmented veins, in both a dark purplish color and also a reddish pink.  This may be correlated with blue/purple and pink flowers.  These leaves also tend to have pigmented edges.  This extra pigment is not evident in my other seedlings in the same location, and not all the seedlings of this grow out show this characteristic.  Some leaves have also developed a blush of the darker pigment in areas on the leaf surface.  The contrast is quite striking particularly on the yellow leaves.  I first noticed both the blush and dark veins in the cotyledons of this grow out. I’ll be watching this as the plants continue to grow to see if it persists or if it may be nutritional.  If it is lasting and genetic, it could lead to some interesting new developments in leaf coloring in the Japanese Morning Glory.

Very dark veins

Very dark veins

Lighter colored veins

Lighter colored veins

Light colored blush on a yellow leaf

Light colored blush on a yellow leaf

The normal leaf of on of the original parents

The normal leaf of one of the original parents

A very dark blush on a green leaf

A very dark blush on a green leaf

Dark pigmented blotch at leaf tip

Dark pigmented blotch at leaf tip

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2 thoughts on “Dark Pigmented Leaves in the Japanese Morning Glory

  1. I’m really anxious to see if this persists. I agree, the combination of darker pigment with the yellow leaves is particularly striking.

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