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Improving Germination of Papaya Seed by Density Separation, Potassium Nitrate, and Gibberellic Acid

1986; American Society for Horticultural Science; Volume: 21; Issue: 6 Linguagem: Inglês

10.21273/hortsci.21.6.1439

2327-9834

Mike A. Nagao, Sheldon C. Furutani,

Growth and nutrition in plants

Abstract Poor germination in Carica papaya L. was partly due to the absence of embryos in about 20% of the seeds. Final germination and the rate of seedling emergence were improved by seed separation with 1.097 g·em −3 sucrose solution and soaking with 1.0 M potassium nitrate (KNO 3 ) or 600 ppm gibberellic acid (GA 3 ). Final germination was 87.8% for the KNO 3 treatment and 80.5% for GA 3 . Seedlings from KNO 3 treatments were normal, whereas GA 3 caused excessive elongation of stems.