Lettuce seed germination at high temperature: endo-beta-mannanase activity and ethylene production in response to seed vigor.
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The endosperm of lettuce acts as a barrier to germination at high temperatures. The study with the 'Everglades' cultivar indicates that the weakening of this layer requires the enzyme endo-β-mannanase (EBM). High-vigor seeds produce more ethylene and EBM activity, overcoming thermoinhibition at 35°C.
Resumo 5.08.
Resumo 5.08.
Palabras clave
Vigour, High temperature, Alface, Etileno, Germinação, Lactuca Sativa, Semente, Temperatura, ethylene, germination, lettuce, longevity, seeds, vigor