Factors influencing the germination of myrtle (Lagerstroemia speciosa (L.) Pers. and L. floribunda Jack) seeds
Gibberellic acid and potassium nitrate did not promote the germination of myrtle seeds when tested at 20/30°C (16/8h). Germination was promoted considerably by alternating temperatures. The results of an investigation on a two-dimensional temperature gradient plate showed that myrtle seeds germinated most rapidly (within 14 days) and fully (all viable seeds) at 35/22.5°C (16/8 h) and similar regimes. Tests on five seed lots of Lagerstroemia speciosa and L. floribunda showed the efficacy of the alternating temperature regime of 35/20°C (16/8 h) in promoting germination. Thus we recommend myrtle seeds be tested for germination in this regime for 28 days.
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Document Type: Research Article
Publication date: April 1, 2004
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