Influence of Light and Growth Regulators on Cranberry Seed Dormancy

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Abstract
Summary The influence of light (intensity and duration), GA, ABA and kinetin on the germination of photoblastic Early Black cranberry seeds was studied. No germination was observed after exposure of five days to 10 800 lx but considerable germination took place after 10 days under 1 080 or 10 800 lx. At least 15 days’ exposure to 10·8 or 108 lx was necessary to induce some germination. G A stimulated dark germination and ABA inhibited light germination. The two growth regulators were found to be mutually antagonistic, ABA inhibiting GA stimulation of dark germination and GA counteracting ABA inhibition of light germination. Kinetin was able to induce some dark germination but was much less active than GA in this respect.

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