Benzyladenine in the Priming Solution Reduces Thermodormancy of Lettuce Seeds
نویسنده
چکیده
When lettuce seeds are imbibed and subjected to high temperature for periods of 72 h or more, dormancy known as thermodormaney is induced. Priming of three cultivars of lettuce ( Lactuca sativa L.) seeds in 1% (w/v) K3P O4 for 20 h in the dark reduced thermodormaney. Addition of 100 mg 6-benzyladenine (BA)/liter to the priming solution increased germination in petri dishes at 35C in ‘Green Lakes’ from 65% in seeds that were primed without BA, to 92% when BA was added to the priming solution. In ‘South Bay’ these percentages were 24% and 86%, respectively. Seedling emergence was improved in other lots of ‘Green Lakes’ and ‘Montello’ using soilless mix.
منابع مشابه
Mechanism of seed priming in circumventing thermodormancy in lettuce.
Lettuce (Lactuca sativa L. cv Minetto) seeds were primed in aerated solutions of 1% K(3)PO(4) or water at 15 degrees C in the dark for various periods of time to determine the manner by which seed priming bypasses thermodormancy. Seeds which were not primed did not germinate at 35 degrees C, whereas those which were primed for 20 h in 1% K(3)PO(4) or distilled H(2)O had up to 86% germination. T...
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