Seed germination and seedling emergence of synedrella (Synedrella nodiflora) in a tropical environment
Synedrella is a tropical annual plant species of the family Asteraceae that is widely distributed in many crops in nearly 50 countries. Experiments were conducted to determine the influence of various environmental factors on seed germination and seedling emergence of synedrella. Germination respons...
| Main Authors: | , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Cambridge University Press
2009
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/165117 |
| _version_ | 1855534431188549632 |
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| author | Chauhan, Bhagirath S. Johnson, David E. |
| author_browse | Chauhan, Bhagirath S. Johnson, David E. |
| author_facet | Chauhan, Bhagirath S. Johnson, David E. |
| author_sort | Chauhan, Bhagirath S. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Synedrella is a tropical annual plant species of the family Asteraceae that is widely distributed in many crops in nearly 50 countries. Experiments were conducted to determine the influence of various environmental factors on seed germination and seedling emergence of synedrella. Germination response was greater at 30/20 C and 35/25 C than at 25/15 C fluctuating day/night temperatures. Light stimulated germination; however, a small proportion of after-ripened seeds germinated in the dark. Seedling emergence was greatest (96%) for seeds placed on the soil surface but declined with increased seed burial depth. No seedlings emerged from a depth of 4 cm. Seedling emergence and seedling dry matter declined with the addition of crop residue to the soil surface; however, higher quantities of residue than those normally found in low-yield systems were required to result in substantial reductions in emergence. Seed germination was tolerant of moderate salt concentrations (40 to 100 mM sodium chloride) and a broad range of pH (4 to 10) but was sensitive to low osmotic potentials (< −0.8 MPa). The information gained from this study could help predict the invasion potential of this species and could lead to improved management strategies. |
| format | Journal Article |
| id | CGSpace165117 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2009 |
| publishDateRange | 2009 |
| publishDateSort | 2009 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace1651172024-12-19T14:13:12Z Seed germination and seedling emergence of synedrella (Synedrella nodiflora) in a tropical environment Chauhan, Bhagirath S. Johnson, David E. crop residues seed germination seedling emergence seeds sodium chloride soil temperature weeds synedrella nodiflora Synedrella is a tropical annual plant species of the family Asteraceae that is widely distributed in many crops in nearly 50 countries. Experiments were conducted to determine the influence of various environmental factors on seed germination and seedling emergence of synedrella. Germination response was greater at 30/20 C and 35/25 C than at 25/15 C fluctuating day/night temperatures. Light stimulated germination; however, a small proportion of after-ripened seeds germinated in the dark. Seedling emergence was greatest (96%) for seeds placed on the soil surface but declined with increased seed burial depth. No seedlings emerged from a depth of 4 cm. Seedling emergence and seedling dry matter declined with the addition of crop residue to the soil surface; however, higher quantities of residue than those normally found in low-yield systems were required to result in substantial reductions in emergence. Seed germination was tolerant of moderate salt concentrations (40 to 100 mM sodium chloride) and a broad range of pH (4 to 10) but was sensitive to low osmotic potentials (< −0.8 MPa). The information gained from this study could help predict the invasion potential of this species and could lead to improved management strategies. 2009-02 2024-12-19T12:54:43Z 2024-12-19T12:54:43Z Journal Article https://hdl.handle.net/10568/165117 en Cambridge University Press Chauhan, Bhagirath S.; Johnson, David E. 2009. Seed germination and seedling emergence of synedrella (Synedrella nodiflora) in a tropical environment. Weed sci., Volume 57 no. 1 p. 36-42 |
| spellingShingle | crop residues seed germination seedling emergence seeds sodium chloride soil temperature weeds synedrella nodiflora Chauhan, Bhagirath S. Johnson, David E. Seed germination and seedling emergence of synedrella (Synedrella nodiflora) in a tropical environment |
| title | Seed germination and seedling emergence of synedrella (Synedrella nodiflora) in a tropical environment |
| title_full | Seed germination and seedling emergence of synedrella (Synedrella nodiflora) in a tropical environment |
| title_fullStr | Seed germination and seedling emergence of synedrella (Synedrella nodiflora) in a tropical environment |
| title_full_unstemmed | Seed germination and seedling emergence of synedrella (Synedrella nodiflora) in a tropical environment |
| title_short | Seed germination and seedling emergence of synedrella (Synedrella nodiflora) in a tropical environment |
| title_sort | seed germination and seedling emergence of synedrella synedrella nodiflora in a tropical environment |
| topic | crop residues seed germination seedling emergence seeds sodium chloride soil temperature weeds synedrella nodiflora |
| url | https://hdl.handle.net/10568/165117 |
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