Variety traits
Lettuce flower stalk
Lactuca sativa L.
A lettuce flower stalk is a shoot formed when the plant transitions to the reproductive phase. Its early appearance reduces crop marketability by making the leaves coarse and bitter.
In the reference 88 varieties crop Lettuce, where this is mentioned in the description.
In variety trials, the timing of flower stalk emergence is a key standardized trait, measured in days from sowing to shoot appearance. For leaf and head lettuce types, a higher number of days is considered desirable, indicating the variety's resistance to premature bolting.
The process of flower stalk formation is triggered by a combination of long daylight hours, high temperatures above 22-25°C, and moisture deficit. Due to the redistribution of nutrients into the stem, the quality of the marketable product declines sharply. The exception is celtuce, which is cultivated for the consumption of the succulent stem that forms during flowering.
General information about the subject — on the page Peduncle.
Varieties of Lettuce mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
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