Articles
PAPAYA SEED GERMINATION AND SEEDLING EMERGENCE ARE NOT INFLUENCED BY SOLUTION PH
Article number
740_24
Pages
203 – 207
Language
English
Abstract
Two growth chamber studies were conducted to determine the influence of pH on papaya seed germination and seedling emergence.
The germination test was conducted with Waimanalo and Tainung 1 seeds using traditional filter paper methods with three replications and 40 seed per replication.
Filter paper was moistened daily with nutrient solution adjusted to pH of 3, 4, 5, 6, 7, 8, or 9. Germination was recorded daily, and defined as when the radicle was visible.
Germination began on day 5, and the experiment was terminated on day 23. Solution pH did not influence germination rate or ultimate germination percentage. Waimanalo exhibited 58% germination and Tainung 1 exhibited 64% germination.
The seedling emergence test was conducted with Waimanalo seed using sand culture, and consisted of three replications and 30 seed per replication.
The sand was irrigated daily with the solutions described above.
Emergence was recorded when the hypocotyl hook was visible above the sand.
Emergence began on day 10, and the experiment was terminated on day 30. Solution pH did not influence seedling emergence, and the mean emergence was about 70%. These results indicate that seed germination and emergence are not influenced by a pH range that extends well beyond the upper and lower limits of the range for field sites suitable for papaya production.
The germination test was conducted with Waimanalo and Tainung 1 seeds using traditional filter paper methods with three replications and 40 seed per replication.
Filter paper was moistened daily with nutrient solution adjusted to pH of 3, 4, 5, 6, 7, 8, or 9. Germination was recorded daily, and defined as when the radicle was visible.
Germination began on day 5, and the experiment was terminated on day 23. Solution pH did not influence germination rate or ultimate germination percentage. Waimanalo exhibited 58% germination and Tainung 1 exhibited 64% germination.
The seedling emergence test was conducted with Waimanalo seed using sand culture, and consisted of three replications and 30 seed per replication.
The sand was irrigated daily with the solutions described above.
Emergence was recorded when the hypocotyl hook was visible above the sand.
Emergence began on day 10, and the experiment was terminated on day 30. Solution pH did not influence seedling emergence, and the mean emergence was about 70%. These results indicate that seed germination and emergence are not influenced by a pH range that extends well beyond the upper and lower limits of the range for field sites suitable for papaya production.
Publication
Authors
T.E. Marler
Keywords
Carica papaya, germination, pH, soil reaction
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