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Laboratory
Evaluation of Lettuce Seedlings Lettuce
cotyledons with physiological necrosis
Physiological necrosis on the cotyledons should not be confused
with the natural pigmentation of the different lettuce
cultivars.
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 |
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Diagram
from A.O.S.A. Seedling Evaluation Handbook Cont. No. 35.
1992. P.19, Fig 5.3.
(with permission)
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3(+) Physiological necrosis |
2(-) Physiological necrosis |
Natural pigmentation |
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