光周期对穗花狐尾藻生长、开花与种子形成的影响
EFFECT OF DIFFERENT PHOTOPERIODS ON GROWTH, FLOWERING AND SEED PRODUCTION OF MYRIOPHYLLUM SPICATUM L.
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摘要: 通过人工补光和遮光处理,初步研究了光周期对狐尾藻生长和开花的影响。研究发现:8h短日照条件不利于狐尾藻的生长和花序形成,导致狐尾藻不能正常开花和结实;与自然日照长度(平均日照14h)条件下相比,16h长光照条件可以增加植株的高度和分枝数,形成更大的生物量;但24h全光照条件对生长有抑制作用。长光照条件下,狐尾藻花序形成时间和开花时间均比自然条件下延迟,形成花序的数目也显著较自然条件下的少,但长光照条件下形成的种子比自然条件下形成的种子具有更高的萌发率。Abstract: The effect of photoperiod on growth and flowering of Myriophyllum spicatum L. was probed by artificially increasing or decreasing light time. The seedlings were planted on water tanks and divided into four groups and subjected to different photoperiod treatment:( 1) Control: natural photoperiod fromMay to September in Wuhan;( 2) 8h short day treatment;( 3) 16h long day treatment;( 4) 24h full day treatment. It was found that 8h short day photo-period was not favorable to the growth and florence development. The florescence and flower bud formation, flowering time and the germination of seeds under different photoperiod were assessed by stat istical analysis. The results demonstrated that under long term short day, Myriophyllum could not form florescence and fruits. On the contrary, 16h long-day photoperiod could increase the height, promote branching and increase biology mass. But 24h long-day treatment suppressed the growth compared to the natural photo-period condition which is average 13.5h. Under long-day photo-period, the florescence forming and flowering were postulated and the amounts of florescence were also reduced significantly. Interestingly, the seeds produced under long-day photoperiod had a higher germinat ion rate. Our results provided ecological restoration with a new idea for obtaining the high quality seeds.
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Keywords:
- Photoperiod /
- Myriophyllum /
- Growth /
- Flowering
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[1] Zhan C W, Yu D, Wu Z H, et al. The community ecology of aquaticplant in the water-land ecotone of Liangzi Lake[J]. Acta Phytoecologica Sinica, 2001, 25( 5): 573-580[詹存卫, 于丹, 吴中华,等. 梁子湖水- 陆交错区水生植物群落生态学研究. 植物生态学报, 2001, 25( 5): 573-580]
[2] Chen Z Y, Lei Z X, Zhou J, et al. Monthly quant it ative andbiomass dynamics of six submerged macrophyt es populat ions inLiangzi Lake [J]. ActaHydrobiologica Sinica, 2000, 24( 6): 582-588[陈中义, 雷泽湘, 周进, 等. 梁子湖六种沉水植物种群数量和生物量周年动态. 水生生物学报, 2000, 24( 6): 582-588]
[3] Li W, Cheng Y. Quant itat ive analysis on the main submerged communitiesin HongHu Lake. ó. Ceratophyllum demersun+Potanoget on crispus+ Myriophyllum spicatum community [J]. ActaHydrobiologica Sinica, 2000, 24( 1): 30-35[李伟, 程玉. 洪湖主要沉水植物群落的定量分析ó. 金鱼藻+ 菹草+ 穗花狐尾藻群落. 水生生物学报, 2000, 24( 1): 30-35]
[4] Yang L Y, Liang H T, HuW P, et al. The study on natural restoration of aquatic vegetation in the northern lakeside, Lake Taihu[J].Journal of Lake Sciences, 2002, 14( 1): 60-66[杨龙元, 梁海棠, 胡维平, 等. 太湖北部滨岸区水生植被自然修复观测研究. 湖泊科学, 2002, 14( 1): 60-66]
[5] Ma JM, Yan G A, Luo Y P, et al. The aquat ic vegetation restoration and its structure improvement and water quality dynamics in thecontrolled ecosystem in East Lake( Wuhan)[J]. Journal of LakeSciences, 1997, 9( 4): 359-363 [马剑敏, 严国安, 罗岳平,等. 武汉东湖受控生态系统中水生植被恢复结构优化及水质动态. 湖泊科学, 1997, 9(4): 359-363]
[6] Zhang X M, Chen J, Yang S H. Study on rest oration of aquatic vegetation in Dianchi Lake[J]. Journal of Yunnan Environment, 1998,17( 3): 38-40[张秀敏, 陈娟, 杨树华. 滇池水生植被恢复规划研究. 云南环境科学, 1998, 17( 3): 38-40]
[7] SuW H, Zhang G F, Zhang Y S, et al. The photosynthetica characteristics of five submerged aquatic plants[J]. Acta Hydrobiol ogicaSinica, 2004, 28( 42): 391-395[苏文华, 张光飞, 张云孙, 等.5 种沉水植物的光合特征. 水生生物学报, 2004, 28( 42 -):391-395]
[8] Zhang R, Xue G X, Song J X, Jiang X W. Abnormality in male organdevelopment and fertility of photoperiod sensitive genic sterile riceplants under short day condition[J]. Acta Botanica Sinica, 1999,41( 12): 1317-1322[张锐, 薛光行, 宋家祥, 蒋希文. 光敏核不育水稻短日照植株的雄性器官和育性异常. 植物学报,1999, 41( 12): 1317-1322]
[9] Bai S N, Tan K H. A review and retrospection on photoperiod-sensitive genic male sterile rice: is the information from leaves specific tostem developmental affairs[J]?Chinese Science Bulletin, 2001, 46( 9): 788-792[白书农, 谭克辉. 对光敏水稻研究的回顾与反思: 植物光周期现象中叶片信息对茎端的形态建成事件有专一性吗? 科学通报, 2001, 46( 9): 788-792]
[10] Santamaria L, Hootsmans M J M, Vierssen W V. Flowering time asinfluenced by nitrate fertilization in Ruppia drepanensis Tineo[J].Aquatic Botany, 1995, 52: 45-58
[11] Chen Z Y, Lei Z X, Zhou J, et al . A preliminary study of winterseed bank of dominant submerged macrophytes in Liangzi Lake[J].Acta Hydrobiol ogica Sinica, 2001, 25( 2): 152-158[陈中义, 雷泽湘, 周进, 等. 梁子湖优势沉水植物冬季种子库的初步研究. 水生生物学报, 2001, 25( 2): 152-158]
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