Seed germination and ultra structural changes in oil palm (Elaeis guineensis) hybrid seed influenced by heat treatments
Seed dormancy in oil palm (Elaeis guineensis Jacq.) is considered as one of the major causes for low and erratic germination. Oil palm hybrid seeds (dura × pisifera) were subjected to heat treatment for 0, 10, 20, 30, 40, 50, 60, 70, 80 and 90 days in a heating room at 39 + 1ºC and germination resp...
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| Format: | Article |
| Language: | English |
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Indian Council of Agricultural Research
2015-11-01
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| Series: | The Indian Journal of Agricultural Sciences |
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| Online Access: | https://epubs.icar.org.in/index.php/IJAgS/article/view/53668 |
| _version_ | 1797771214312177664 |
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| author | P MURUGESAN G RAVICHANDRAN M SHAREEF |
| author_facet | P MURUGESAN G RAVICHANDRAN M SHAREEF |
| author_sort | P MURUGESAN |
| collection | DOAJ |
| description |
Seed dormancy in oil palm (Elaeis guineensis Jacq.) is considered as one of the major causes for low and erratic germination. Oil palm hybrid seeds (dura × pisifera) were subjected to heat treatment for 0, 10, 20, 30, 40, 50, 60, 70, 80 and 90 days in a heating room at 39 + 1ºC and germination response, ultrastructural changes in embryo, endosperm and operculum structures were observed. The results revealed that seed heating for 50, 60 and 70 days and incubation in germination room (25 to 27 ºC) resulted in germination of 90.4, 93.6 and 94.8%, respectively. Heating of seeds for 0, 10 and 20 days had no effect on germination. Structural changes of dormant and germinating seeds were investigated through microtome sectioning and Scanning Electron Microscope (SEM). Endosperm above the embryo is demarcated by several layers of small cells. During the break of seed dormancy, endosperm cleaves in the micropylar region through the small cells. Enlargement of embryo facilitates the dislocation of the operculum during the germination. It is confirmed that heat treatment for 60 to 70 days to be optimum for obtaining maximum oil palm seed germination. Nevertheless, heating oil palm seeds at 50oC is recommended for maximum germination in a short time.
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| first_indexed | 2024-03-12T21:34:15Z |
| format | Article |
| id | doaj.art-289de3183bc14a3694de5ff5612a06ba |
| institution | Directory Open Access Journal |
| issn | 0019-5022 2394-3319 |
| language | English |
| last_indexed | 2024-03-12T21:34:15Z |
| publishDate | 2015-11-01 |
| publisher | Indian Council of Agricultural Research |
| record_format | Article |
| series | The Indian Journal of Agricultural Sciences |
| spelling | doaj.art-289de3183bc14a3694de5ff5612a06ba2023-07-27T11:41:16ZengIndian Council of Agricultural ResearchThe Indian Journal of Agricultural Sciences0019-50222394-33192015-11-01851110.56093/ijas.v85i11.53668Seed germination and ultra structural changes in oil palm (Elaeis guineensis) hybrid seed influenced by heat treatmentsP MURUGESAN0G RAVICHANDRAN1M SHAREEF2Principal Scientist and Scientist In-charge, ICAR-Indian Institute of Oil Palm Research, Research Centre, Palode, Thiruvananthapuram, Kerala 695 562Senior Scientist, ICAR-Indian Institute of Oil Palm Research, Pedavegi, Andhra Pradesh 534 450Research Fellow, ICAR-Indian Institute of Oil Palm Research, Research Centre, Palode, Thiruvananthapuram, Kerala 695 562 Seed dormancy in oil palm (Elaeis guineensis Jacq.) is considered as one of the major causes for low and erratic germination. Oil palm hybrid seeds (dura × pisifera) were subjected to heat treatment for 0, 10, 20, 30, 40, 50, 60, 70, 80 and 90 days in a heating room at 39 + 1ºC and germination response, ultrastructural changes in embryo, endosperm and operculum structures were observed. The results revealed that seed heating for 50, 60 and 70 days and incubation in germination room (25 to 27 ºC) resulted in germination of 90.4, 93.6 and 94.8%, respectively. Heating of seeds for 0, 10 and 20 days had no effect on germination. Structural changes of dormant and germinating seeds were investigated through microtome sectioning and Scanning Electron Microscope (SEM). Endosperm above the embryo is demarcated by several layers of small cells. During the break of seed dormancy, endosperm cleaves in the micropylar region through the small cells. Enlargement of embryo facilitates the dislocation of the operculum during the germination. It is confirmed that heat treatment for 60 to 70 days to be optimum for obtaining maximum oil palm seed germination. Nevertheless, heating oil palm seeds at 50oC is recommended for maximum germination in a short time. https://epubs.icar.org.in/index.php/IJAgS/article/view/53668GerminationHeating durationsOil palmSeed dormancyUltra structures |
| spellingShingle | P MURUGESAN G RAVICHANDRAN M SHAREEF Seed germination and ultra structural changes in oil palm (Elaeis guineensis) hybrid seed influenced by heat treatments The Indian Journal of Agricultural Sciences Germination Heating durations Oil palm Seed dormancy Ultra structures |
| title | Seed germination and ultra structural changes in oil palm (Elaeis guineensis) hybrid seed influenced by heat treatments |
| title_full | Seed germination and ultra structural changes in oil palm (Elaeis guineensis) hybrid seed influenced by heat treatments |
| title_fullStr | Seed germination and ultra structural changes in oil palm (Elaeis guineensis) hybrid seed influenced by heat treatments |
| title_full_unstemmed | Seed germination and ultra structural changes in oil palm (Elaeis guineensis) hybrid seed influenced by heat treatments |
| title_short | Seed germination and ultra structural changes in oil palm (Elaeis guineensis) hybrid seed influenced by heat treatments |
| title_sort | seed germination and ultra structural changes in oil palm elaeis guineensis hybrid seed influenced by heat treatments |
| topic | Germination Heating durations Oil palm Seed dormancy Ultra structures |
| url | https://epubs.icar.org.in/index.php/IJAgS/article/view/53668 |
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