The effect of continuous illumination and short dark durations on growth and pigment composition of green algae Scenedesmus sp. From Golestan Province - Iran
Chlorophytean alga Scenedesmus, seems a potent strain considering both agricultural and nutriotional biotechnology. Unfortunately we have no report about this micrroalga at Golestan Province. Each economic program using this microalgae in applied purposes, need exact biological characterization incl...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | fas |
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Islamic Azad University - Gorgan Branch
2009-12-01
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| Series: | فیزیولوژی محیطی گیاهی |
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| Online Access: | https://ecophysiologi.gorgan.iau.ir/article_694121_50787f8f5c7bfeeb99e85cce2a3c1bdf.pdf |
| _version_ | 1797808247919345664 |
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| author | P Harati Sh Shokravi A Sateei P Azizi |
| author_facet | P Harati Sh Shokravi A Sateei P Azizi |
| author_sort | P Harati |
| collection | DOAJ |
| description | Chlorophytean alga Scenedesmus, seems a potent strain considering both agricultural and nutriotional biotechnology. Unfortunately we have no report about this micrroalga at Golestan Province. Each economic program using this microalgae in applied purposes, need exact biological characterization including ecophysioligical researches. Considering these purposes, viability, growth, and pigment composition of one of the species of this genus collected from paddy-field of Golestan Province have been studied under continuous and below two hours light dark photoperiods. Collection have been done from paddy fields of Golestan Province at one year duration. After isolation, Scenedesmus sp. Has been incubated under 2 umolquanta m-2 s-1, both continuous at then with dark durations (30, 60 and 90 minutes). Viability, growth and pigment composition have been studied at the species. Results showed that, the species remain variable at continuous and non continuous illumination conditions as a whole. The growth specific rate reach to the highest rate at one hours dark condition. 30 minutes dark photoperiods and continuous dark cause almost similar conditions and decrease the growth rate sharply. Reproductive cycle accelerate significantly at 30 minutes photoperiods and continuous illumination. Chlorophyll a production rate decrease at 30 minutes dark photoperiods comparing highest light durations. The amount of Chlorophyll a was highest at continuous light and 60 minutes photoperiods. |
| first_indexed | 2024-03-13T06:34:37Z |
| format | Article |
| id | doaj.art-20586c9303c3487f8f3160d96c29d2fe |
| institution | Directory Open Access Journal |
| issn | 2423-7671 2783-4689 |
| language | fas |
| last_indexed | 2024-03-13T06:34:37Z |
| publishDate | 2009-12-01 |
| publisher | Islamic Azad University - Gorgan Branch |
| record_format | Article |
| series | فیزیولوژی محیطی گیاهی |
| spelling | doaj.art-20586c9303c3487f8f3160d96c29d2fe2023-06-09T06:26:35ZfasIslamic Azad University - Gorgan Branchفیزیولوژی محیطی گیاهی2423-76712783-46892009-12-014151017694121The effect of continuous illumination and short dark durations on growth and pigment composition of green algae Scenedesmus sp. From Golestan Province - IranP Harati0Sh Shokravi1A Sateei2P Azizi3Dep. of biology, Islamic Azad Univ., Gorgan Branch, Gorgan, IranDep. of biology, Islamic Azad Univ., Gorgan Branch, Gorgan, IranDep. of biology, Islamic Azad Univ., Gorgan Branch, Gorgan, IranDep. of biology, Islamic Azad Univ., Gorgan Branch, Gorgan, IranChlorophytean alga Scenedesmus, seems a potent strain considering both agricultural and nutriotional biotechnology. Unfortunately we have no report about this micrroalga at Golestan Province. Each economic program using this microalgae in applied purposes, need exact biological characterization including ecophysioligical researches. Considering these purposes, viability, growth, and pigment composition of one of the species of this genus collected from paddy-field of Golestan Province have been studied under continuous and below two hours light dark photoperiods. Collection have been done from paddy fields of Golestan Province at one year duration. After isolation, Scenedesmus sp. Has been incubated under 2 umolquanta m-2 s-1, both continuous at then with dark durations (30, 60 and 90 minutes). Viability, growth and pigment composition have been studied at the species. Results showed that, the species remain variable at continuous and non continuous illumination conditions as a whole. The growth specific rate reach to the highest rate at one hours dark condition. 30 minutes dark photoperiods and continuous dark cause almost similar conditions and decrease the growth rate sharply. Reproductive cycle accelerate significantly at 30 minutes photoperiods and continuous illumination. Chlorophyll a production rate decrease at 30 minutes dark photoperiods comparing highest light durations. The amount of Chlorophyll a was highest at continuous light and 60 minutes photoperiods.https://ecophysiologi.gorgan.iau.ir/article_694121_50787f8f5c7bfeeb99e85cce2a3c1bdf.pdfgolestangreen algaegrowthpaddy-fieldscenedesmusviabilitypigment |
| spellingShingle | P Harati Sh Shokravi A Sateei P Azizi The effect of continuous illumination and short dark durations on growth and pigment composition of green algae Scenedesmus sp. From Golestan Province - Iran فیزیولوژی محیطی گیاهی golestan green algae growth paddy-field scenedesmus viability pigment |
| title | The effect of continuous illumination and short dark durations on growth and pigment composition of green algae Scenedesmus sp. From Golestan Province - Iran |
| title_full | The effect of continuous illumination and short dark durations on growth and pigment composition of green algae Scenedesmus sp. From Golestan Province - Iran |
| title_fullStr | The effect of continuous illumination and short dark durations on growth and pigment composition of green algae Scenedesmus sp. From Golestan Province - Iran |
| title_full_unstemmed | The effect of continuous illumination and short dark durations on growth and pigment composition of green algae Scenedesmus sp. From Golestan Province - Iran |
| title_short | The effect of continuous illumination and short dark durations on growth and pigment composition of green algae Scenedesmus sp. From Golestan Province - Iran |
| title_sort | effect of continuous illumination and short dark durations on growth and pigment composition of green algae scenedesmus sp from golestan province iran |
| topic | golestan green algae growth paddy-field scenedesmus viability pigment |
| url | https://ecophysiologi.gorgan.iau.ir/article_694121_50787f8f5c7bfeeb99e85cce2a3c1bdf.pdf |
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