Effect of Light Intensity on Growth and Photosynthetic Properties of Sonnerratia apetala Seedling

DIAO Jun-ming; CHEN Gui-zhu

Volume 21 Issue 4

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Effect of Light Intensity on Growth and Photosynthetic Properties of Sonnerratia apetala Seedling

DIAO Jun-ming^1,2,
CHEN Gui-zhu^1,

1.
School of Environmental Science and Engineering,Sun Yat-Sen University,Guangzhou 510275,Guangdong,China
2.
Department of Biology,Jiaying University,Meizhou 514015,Guangdong,China

Received Date: 2008-01-14

Abstract

Growth and photosynthetic properties of Sonnerratia apetala seedlings were studied under different light intensity environments according to light intensity of Sonnerratia apetala in field.The results indicated that with the light intensity lessening,the trend of growth and photosynthetic properties of Sonnerratia apetala seedlings decreased.The difference of different treatments was significant.When the light intensity was 80% and 40% of full light,the growth of seedlings became worse,they grow worse than that of full light.The weak light environment was beneficial to stem height,leaf area and ratio of length to width of lamina only in initial shading stage(2 to 4 months),but with the shading time prolonging,the growth of seedlings appeared to the trend of decline.The growth of seedlings were restricted seriously in initial shading stage when the light intensity was 20%.The death rate of seedlings of Sa80,Sa40 and Sa20 in shading treatment 180 days were 42%,70% and 100%,respectively.Biomass of root,stem and leaf were decreased by about 90%,80% and 91% in weak light intensity environment.With the light intensity lessening,the trends of physiology parameters such as chlorophyll contents,net photosynthetic rate decreased,the difference among them was significant.Therefore,weak light intensity environment was the main reason for lower growth rate,lower photosynthetic rate and higher death rate of Sonnerratia apetala seedlings.In addition,the natural regeneration and diffusion and the artificial forestation technique of Sonnerratia apetala seedlings were discussed.
- light intensity,
- growth,
- photosynthetic properties,
- natural regeneration,
- natural diffusion,
- Sonnerratia apetala seedling

References

[1]	廖宝文,郑松发,陈玉军,等. 外来红树植物无瓣海桑生物学特性与生态环境适应性[J]. 生态学杂志, 2004, 23 (1) : 10 - 15
[2]	陈玉军,廖宝文,郑松发,等. 无瓣海桑、海桑、秋茄红树人工林群落动态及物种多样性研究[J]. 应用生态学报, 2004, 15 ( 6) : 924- 928
[3]	李　云,郑德璋,廖宝文,等. 红树植物无瓣海桑引种的初步研究[J]. 林业科学研究, 1998, 11 (1) : 39 - 44
[4]	王淑元,郑德璋,陈相如,等. 赴孟加拉国红树林技术考察报告[M] / /陈禹畴,杜梦纲. 国外林业技术考察报告选编. 哈尔滨:东北林业大学出版社, 1995: 91 - 96
[5]	陈玉军,廖宝文,彭耀强,等. 红树植物无瓣海桑北移引种的研究[J]. 广东林业科技, 2003, 19 (2) : 9 - 12
[6]	钟才荣,李海山,陈桂珠. 无瓣海桑的育苗技术[J]. 广东林业科技, 2003, 9 (3) : 68 - 70
[7]	张苏玮. 闽南无瓣海桑苗木培育技术[J]. 林业勘察设计(福建) , 2007 (1) : 114 - 116
[8]	Smith T J. Effects of seed p redators and light level on the distributionof Avicennia m arina ( Forsk. ) Vierh. in trop ical, tidal forests[J].Estuarine, Coastal and Shelf Science, 1987, 25: 43 - 51
[9]	Tamai S, Iampa P. Establishment and growth ofmangrove seedlingsin mangrove forests of southern Thailand [J]. Ecological Research,1988, 3: 227 - 238
[10]	Allen J A, Krauss KW, Hauff R D. Factors limiting the intertidaldistribution of the mangrove species Xylocarpus granatum [J].Oecologia, 2003, 135: 110 - 121
[11]	Proffitt C E, Devlin D J. Long－term growth and succession in restored and natural mangrove forests in southwestern Florida [J].Wetlands Ecology andManagement, 2005, 13: 531 - 551
[12]	ImaiN, TakyuM, Nakamura Y, et al. Gap formation and regeneration of trop ical mangrove forests in Ranong, Thailand [J]. PlantEcology, 2006, 186: 37 - 46
[13]	张志良. 植物生理实验指导(第三版) [M]. 北京:高等教育出版社, 2003, 127 - 165
[14]	Santiago L S, Lau T S, Melc her PJ, et al. Morphological and physiological responses of Hawaiian hibiscus tiliaceus populations tolight and salinity[J]. Inter J p lant Scik, 2000, 161: 99 - 106
[15]	杨盛昌,中须贺常雄,林　鹏. 光强对秋茄幼苗的生长和光合特性的影响[J]. 厦门大学学报:自然科学版, 2003, 42 ( 2) : 242- 247
[16]	Clarke P J, AllawayW G. The regeneration niche of greymangrove(Avicennia m arina) : effects of salinity, light and sediment facterson establishment, growth and survival in the field [J]. Oecologia,1993, 93: 548 - 556
[17]	Smith SM, Lee D W. Effects of light quantity and quality on earlyseedling development in the red mangrove, Rhizophora m angle L.[J]. Bulletin ofMarine Science, 1999, 65 (3) : 795 - 806
[18]	BallM C. Interactive effects of salinity and irradiance on growth:imp lications for mangrove forest structure along salinity gradients[J]. Trees structure and function, 2002, 16 (2 - 3) : 126 - 139
[19]	张宜辉, 王文卿, 吴秋城,等. 福建漳江口红树林区秋茄幼苗生长动态[J]. 生态学报, 2006, 26 (6) : 1648 - 1656
[20]	莫竹承,范航清,何斌源. 木榄母树下2种红树植物幼苗生长特征研究[J]. 广西科学, 2001, 8 (3) : 218 - 222
[21]	叶　勇,谭凤仪,卢吕义. 土壤结构与光照水平对秋茄某些生长和生理参数的影响[J]. 植物生态学报, 2001, 25 (1) : 42 - 49
[22]	BallM C, Critchley C. Photosynthetic responses to irradiance bythe grey mangrove, Avicennia m arina, grown under different lightregime[J]. Plant Physiology, 1982, 70: 1101 - 1106
[23]	Mehlig U. Phenology of the red mangrove, Rhizophora m angle L. ,in the CaetéEstuary, Parà, equatorialBrazil[J]. Aquatic Botany,2006, 84: 158 - 164
[24]	Kitaya Y, SumiyoshiM, Kawabata Y, et al. Effect of submergenceand shading of hypocotyls on leaf conductance in young seedlings ofthe mangrove Rhizophora stylosa[J]. Trees, 2002, 16: 147 - 149
[25]	廖宝文,李　玫,郑松发,等. 海南岛东寨港几种红树植物种间生态位研究[J]. 应用生态学报, 2005, 16 (3) : 403 - 407

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Effect of Light Intensity on Growth and Photosynthetic Properties of Sonnerratia apetala Seedling

1. School of Environmental Science and Engineering,Sun Yat-Sen University,Guangzhou 510275,Guangdong,China

2. Department of Biology,Jiaying University,Meizhou 514015,Guangdong,China

Received Date: 2008-01-14

Abstract: Growth and photosynthetic properties of Sonnerratia apetala seedlings were studied under different light intensity environments according to light intensity of Sonnerratia apetala in field.The results indicated that with the light intensity lessening,the trend of growth and photosynthetic properties of Sonnerratia apetala seedlings decreased.The difference of different treatments was significant.When the light intensity was 80% and 40% of full light,the growth of seedlings became worse,they grow worse than that of full light.The weak light environment was beneficial to stem height,leaf area and ratio of length to width of lamina only in initial shading stage(2 to 4 months),but with the shading time prolonging,the growth of seedlings appeared to the trend of decline.The growth of seedlings were restricted seriously in initial shading stage when the light intensity was 20%.The death rate of seedlings of Sa80,Sa40 and Sa20 in shading treatment 180 days were 42%,70% and 100%,respectively.Biomass of root,stem and leaf were decreased by about 90%,80% and 91% in weak light intensity environment.With the light intensity lessening,the trends of physiology parameters such as chlorophyll contents,net photosynthetic rate decreased,the difference among them was significant.Therefore,weak light intensity environment was the main reason for lower growth rate,lower photosynthetic rate and higher death rate of Sonnerratia apetala seedlings.In addition,the natural regeneration and diffusion and the artificial forestation technique of Sonnerratia apetala seedlings were discussed.

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[1]	廖宝文,郑松发,陈玉军,等. 外来红树植物无瓣海桑生物学特性与生态环境适应性[J]. 生态学杂志, 2004, 23 (1) : 10 - 15
[2]	陈玉军,廖宝文,郑松发,等. 无瓣海桑、海桑、秋茄红树人工林群落动态及物种多样性研究[J]. 应用生态学报, 2004, 15 ( 6) : 924- 928
[3]	李　云,郑德璋,廖宝文,等. 红树植物无瓣海桑引种的初步研究[J]. 林业科学研究, 1998, 11 (1) : 39 - 44
[4]	王淑元,郑德璋,陈相如,等. 赴孟加拉国红树林技术考察报告[M] / /陈禹畴,杜梦纲. 国外林业技术考察报告选编. 哈尔滨:东北林业大学出版社, 1995: 91 - 96
[5]	陈玉军,廖宝文,彭耀强,等. 红树植物无瓣海桑北移引种的研究[J]. 广东林业科技, 2003, 19 (2) : 9 - 12
[6]	钟才荣,李海山,陈桂珠. 无瓣海桑的育苗技术[J]. 广东林业科技, 2003, 9 (3) : 68 - 70
[7]	张苏玮. 闽南无瓣海桑苗木培育技术[J]. 林业勘察设计(福建) , 2007 (1) : 114 - 116
[8]	Smith T J. Effects of seed p redators and light level on the distributionof Avicennia m arina ( Forsk. ) Vierh. in trop ical, tidal forests[J].Estuarine, Coastal and Shelf Science, 1987, 25: 43 - 51
[9]	Tamai S, Iampa P. Establishment and growth ofmangrove seedlingsin mangrove forests of southern Thailand [J]. Ecological Research,1988, 3: 227 - 238
[10]	Allen J A, Krauss KW, Hauff R D. Factors limiting the intertidaldistribution of the mangrove species Xylocarpus granatum [J].Oecologia, 2003, 135: 110 - 121
[11]	Proffitt C E, Devlin D J. Long－term growth and succession in restored and natural mangrove forests in southwestern Florida [J].Wetlands Ecology andManagement, 2005, 13: 531 - 551
[12]	ImaiN, TakyuM, Nakamura Y, et al. Gap formation and regeneration of trop ical mangrove forests in Ranong, Thailand [J]. PlantEcology, 2006, 186: 37 - 46
[13]	张志良. 植物生理实验指导(第三版) [M]. 北京:高等教育出版社, 2003, 127 - 165
[14]	Santiago L S, Lau T S, Melc her PJ, et al. Morphological and physiological responses of Hawaiian hibiscus tiliaceus populations tolight and salinity[J]. Inter J p lant Scik, 2000, 161: 99 - 106
[15]	杨盛昌,中须贺常雄,林　鹏. 光强对秋茄幼苗的生长和光合特性的影响[J]. 厦门大学学报:自然科学版, 2003, 42 ( 2) : 242- 247
[16]	Clarke P J, AllawayW G. The regeneration niche of greymangrove(Avicennia m arina) : effects of salinity, light and sediment facterson establishment, growth and survival in the field [J]. Oecologia,1993, 93: 548 - 556
[17]	Smith SM, Lee D W. Effects of light quantity and quality on earlyseedling development in the red mangrove, Rhizophora m angle L.[J]. Bulletin ofMarine Science, 1999, 65 (3) : 795 - 806
[18]	BallM C. Interactive effects of salinity and irradiance on growth:imp lications for mangrove forest structure along salinity gradients[J]. Trees structure and function, 2002, 16 (2 - 3) : 126 - 139
[19]	张宜辉, 王文卿, 吴秋城,等. 福建漳江口红树林区秋茄幼苗生长动态[J]. 生态学报, 2006, 26 (6) : 1648 - 1656
[20]	莫竹承,范航清,何斌源. 木榄母树下2种红树植物幼苗生长特征研究[J]. 广西科学, 2001, 8 (3) : 218 - 222
[21]	叶　勇,谭凤仪,卢吕义. 土壤结构与光照水平对秋茄某些生长和生理参数的影响[J]. 植物生态学报, 2001, 25 (1) : 42 - 49
[22]	BallM C, Critchley C. Photosynthetic responses to irradiance bythe grey mangrove, Avicennia m arina, grown under different lightregime[J]. Plant Physiology, 1982, 70: 1101 - 1106
[23]	Mehlig U. Phenology of the red mangrove, Rhizophora m angle L. ,in the CaetéEstuary, Parà, equatorialBrazil[J]. Aquatic Botany,2006, 84: 158 - 164
[24]	Kitaya Y, SumiyoshiM, Kawabata Y, et al. Effect of submergenceand shading of hypocotyls on leaf conductance in young seedlings ofthe mangrove Rhizophora stylosa[J]. Trees, 2002, 16: 147 - 149
[25]	廖宝文,李　玫,郑松发,等. 海南岛东寨港几种红树植物种间生态位研究[J]. 应用生态学报, 2005, 16 (3) : 403 - 407

Effect of Light Intensity on Growth and Photosynthetic Properties of Sonnerratia apetala Seedling

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通讯作者: 陈斌, bchen63@163.com

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