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Entry Date
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Location
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Friday, September 05, 2014
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BatCaveN8
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The North Coast
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Entry 27 of 34 |
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OK, theory time. Here is your standard grafted watermelon crown. While there are only two plant here, there are 3 different sections. The rootstock hypocotyl, the watermelon hypocotyl, and the watermelon meristem. When I get to see a crown failure I examine what section is failing or what section failed first. Never has the rootstock failed first, also I have never seen the watermelon meristem produce cankers. The section that I see failing is the watermelon hypocotyl. Hypocotyls are different than the regular vines (meristem) of the plant. In addition, there is a specific location on the watermelon hypocotyl that showes failure first. That location is indicated by the pen in this picture. Oozing typically originates at the location where the watermelon hypocotyl and the watermelon meristem join...or exactly where the watermelons cotyledon once were. The pen is pointing to that location and you can see a faint ring. So, what's going on there that makes it the typical spot where the ooze starts?
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