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ZHOU Yadong, WU Fanhua, XU Shitao, YI Xianliang, ZHAO Yuansen, YU Xudong. The Effect of Shading on the Growth of Neottoptis nidus[J]. Journal of Tropical Biology, 2012, 3(4): 375-378. doi: 10.15886/j.cnki.rdswxb.2012.04.018
Citation:
ZHOU Yadong, WU Fanhua, XU Shitao, YI Xianliang, ZHAO Yuansen, YU Xudong. The Effect of Shading on the Growth of Neottoptis nidus[J]. Journal of Tropical Biology, 2012, 3(4): 375-378. doi: 10.15886/j.cnki.rdswxb.2012.04.018
The Effect of Shading on the Growth of Neottoptis nidus
1. Forestry Department of Hainan Province, Haikou 570203, China;
2. College of Agronomy, Hainan University, Haikou 570228, China;
3. Ministry of Education Key Laboratory for Conservation and Utilization of Tropical Crops Gernplasm Resources, Hainan University, Haikou 570228, China
Received Date: 2012-11-12
Abstract
The nest fern Neottoptis nidus was treated with shading at 6 levels（treatments A（56%）,B（64%）,C（70%）,D（82%）,E（88%）,F（91%）） to observe its growth.The results showed that different levels of shading gave different effects on the relative content of chlorophyll,leaf length,leaf width,leaf number and plant death number.The shading effects on the relative chlorophyll content were in the order of treatments F＞E＞D＞C＞B＞A;the effects on the leaf length were E＞E＞D＞C＞B＞A;the effects on leaf width were E＞D＞C＞F＞B＞A;the effects on the number of new leaves were D＞C＞B＞F＞E＞A;the effects on nest fern mortality were A＞C＞B＞E=D＞F.Shading is positively correlated with the relative chlorophyll content.The shading effect on leaf length and width is changed in a curve way,and the treatment E is found most favorable for nest fern growth.The higher irradiance is beneficial to leaf number increase,but very strong sunshine may kill the fern.Shading at given levels can control the growth of new leaves and the number of leaves.It is concluded that the nest fern grows better under the shading above 88%.
1. Forestry Department of Hainan Province, Haikou 570203, China;
2. College of Agronomy, Hainan University, Haikou 570228, China;
3. Ministry of Education Key Laboratory for Conservation and Utilization of Tropical Crops Gernplasm Resources, Hainan University, Haikou 570228, China
Abstract: The nest fern Neottoptis nidus was treated with shading at 6 levels（treatments A（56%）,B（64%）,C（70%）,D（82%）,E（88%）,F（91%）） to observe its growth.The results showed that different levels of shading gave different effects on the relative content of chlorophyll,leaf length,leaf width,leaf number and plant death number.The shading effects on the relative chlorophyll content were in the order of treatments F＞E＞D＞C＞B＞A;the effects on the leaf length were E＞E＞D＞C＞B＞A;the effects on leaf width were E＞D＞C＞F＞B＞A;the effects on the number of new leaves were D＞C＞B＞F＞E＞A;the effects on nest fern mortality were A＞C＞B＞E=D＞F.Shading is positively correlated with the relative chlorophyll content.The shading effect on leaf length and width is changed in a curve way,and the treatment E is found most favorable for nest fern growth.The higher irradiance is beneficial to leaf number increase,but very strong sunshine may kill the fern.Shading at given levels can control the growth of new leaves and the number of leaves.It is concluded that the nest fern grows better under the shading above 88%.
ZHOU Yadong, WU Fanhua, XU Shitao, YI Xianliang, ZHAO Yuansen, YU Xudong. The Effect of Shading on the Growth of Neottoptis nidus[J]. Journal of Tropical Biology, 2012, 3(4): 375-378. doi: 10.15886/j.cnki.rdswxb.2012.04.018
Citation:
ZHOU Yadong, WU Fanhua, XU Shitao, YI Xianliang, ZHAO Yuansen, YU Xudong. The Effect of Shading on the Growth of Neottoptis nidus[J]. Journal of Tropical Biology, 2012, 3(4): 375-378. doi: 10.15886/j.cnki.rdswxb.2012.04.018
ZHOU Yadong, WU Fanhua, XU Shitao, YI Xianliang, ZHAO Yuansen, YU Xudong. The Effect of Shading on the Growth of Neottoptis nidus[J]. Journal of Tropical Biology, 2012, 3(4): 375-378. doi: 10.15886/j.cnki.rdswxb.2012.04.018
ZHOU Yadong, WU Fanhua, XU Shitao, YI Xianliang, ZHAO Yuansen, YU Xudong. The Effect of Shading on the Growth of Neottoptis nidus[J]. Journal of Tropical Biology, 2012, 3(4): 375-378. doi: 10.15886/j.cnki.rdswxb.2012.04.018
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