Substrate, moisture, temperature and seed germination of the threatened endemic tree Eriotheca vargasii (Malvaceae)
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| Format: | Online |
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Universidad de Costa Rica
2018
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| Online Access: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/29810 |
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RBT298102022-06-09T18:15:42Z Substrate, moisture, temperature and seed germination of the threatened endemic tree Eriotheca vargasii (Malvaceae) Mamani, Godofredo Chuquillanqui, Héctor Chumbiauca, Susana Sahley, Catherine Alonso, Alfonso Linares-Palomino, Reynaldo Andes arid ecosystem Bombacaceae drought forest restoration We studied the germination of Eriotheca vargasii (Malvaceae), a poorly known endemic Peruvian Andean tree species characteristic of the dry forests of the Torobamba river valley. We determined seed characteristics, embryo morphology, viability, and assessed the influence of substrate (natural soil and commercially prepared media), temperature (controlled at 25 ºC and at ambient temperature between 18-22 ºC), and moisture (25 % and 50 % field capacity) on seed germination. Although most seeds were ovoid in shape and contained well-developed embryos, only 46% of them were viable. Substrate moisture levels had no influence on germination capacity or rate. In contrast, temperature and substrate type showed strong effects on germination. We observed the highest proportion of germinated seeds in prepared media at both temperatures tested (> 61 %). Furthermore, substrate types also influenced germination rates, with lower values in natural soil. The strongest effect on germination rates was by temperature, enhancing the difference in responses in substrate types. The low proportion of germinated seeds in soil (< 39 %), together with external local stress factors (e.g. grazing impact by herbivores), may be the critical factors contributing to the nearly total absence of seedlings and saplings of E. vargasii in the study area despite abundant seed production. Universidad de Costa Rica 2018-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf application/vnd.openxmlformats-officedocument.wordprocessingml.document application/pdf text/html https://revistas.ucr.ac.cr/index.php/rbt/article/view/29810 10.15517/rbt.v66i3.29810 Revista de Biología Tropical; Vol. 66 No. 3 (2018): Volume 66 – Regular number 3 – September 2018; 1162–1170 Revista de Biología Tropical; Vol. 66 Núm. 3 (2018): Volumen 66 – Número regular 3 – Setiembre 2018; 1162–1170 Revista Biología Tropical; Vol. 66 N.º 3 (2018): Volume 66 – Regular number 3 – September 2018; 1162–1170 2215-2075 0034-7744 10.15517/rbt.v66i3 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/29810/33851 https://revistas.ucr.ac.cr/index.php/rbt/article/view/29810/33852 https://revistas.ucr.ac.cr/index.php/rbt/article/view/29810/33853 https://revistas.ucr.ac.cr/index.php/rbt/article/view/29810/33854 Copyright (c) 2018 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Mamani, Godofredo Chuquillanqui, Héctor Chumbiauca, Susana Sahley, Catherine Alonso, Alfonso Linares-Palomino, Reynaldo |
| spellingShingle |
Mamani, Godofredo Chuquillanqui, Héctor Chumbiauca, Susana Sahley, Catherine Alonso, Alfonso Linares-Palomino, Reynaldo Substrate, moisture, temperature and seed germination of the threatened endemic tree Eriotheca vargasii (Malvaceae) |
| author_facet |
Mamani, Godofredo Chuquillanqui, Héctor Chumbiauca, Susana Sahley, Catherine Alonso, Alfonso Linares-Palomino, Reynaldo |
| author_sort |
Mamani, Godofredo |
| title |
Substrate, moisture, temperature and seed germination of the threatened endemic tree Eriotheca vargasii (Malvaceae) |
| title_short |
Substrate, moisture, temperature and seed germination of the threatened endemic tree Eriotheca vargasii (Malvaceae) |
| title_full |
Substrate, moisture, temperature and seed germination of the threatened endemic tree Eriotheca vargasii (Malvaceae) |
| title_fullStr |
Substrate, moisture, temperature and seed germination of the threatened endemic tree Eriotheca vargasii (Malvaceae) |
| title_full_unstemmed |
Substrate, moisture, temperature and seed germination of the threatened endemic tree Eriotheca vargasii (Malvaceae) |
| title_sort |
substrate, moisture, temperature and seed germination of the threatened endemic tree eriotheca vargasii (malvaceae) |
| publisher |
Universidad de Costa Rica |
| publishDate |
2018 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/29810 |
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