中国园艺文摘
中國園藝文摘
중국완예문적
CHINESE HORTICULTURE ABSTRACTS
2015年
8期
4-6,17
,共4页
蕨类植物%耐荫性%光合
蕨類植物%耐蔭性%光閤
궐류식물%내음성%광합
ferns%shading tolerance%photosynthesis
以狗脊(Woodwardia japonica)、盾蕨(Neolepisorus ovatus)、凤丫蕨(Coniogramme japonica)为材料，研究3种蕨类植物的耐荫能力。耐荫性试验设置透光率分别为50%、25%、8%的3个遮阴水平，测定不同遮阴情况下叶片形态(叶长、叶宽)、叶绿素含量、光合生理特性(净光合速率、蒸腾速率)的变化。结果表明：3种植物随着遮阴程度的加深，植株的叶片长度、宽度均发生不同的变化，且透光率25%、8%比50%时植物叶片长和宽有明显增长，盾蕨、凤丫蕨最适宜生长的相对光照强度为8%，狗脊为25%。叶绿素含量随遮阴程度的增加而增多，在8%光强时最高，50%光强时最低。3种蕨类植物的光合日变化曲线均呈双峰曲线，有明显的光合“午休”现象。净光合速率、蒸腾速率均随遮阴程度的加深而减少。结合指标变化，利用模糊数学中的隶属函数法对3种蕨类耐荫能力排序,依次为：盾蕨＞凤丫蕨＞狗脊。
以狗脊(Woodwardia japonica)、盾蕨(Neolepisorus ovatus)、鳳丫蕨(Coniogramme japonica)為材料，研究3種蕨類植物的耐蔭能力。耐蔭性試驗設置透光率分彆為50%、25%、8%的3箇遮陰水平，測定不同遮陰情況下葉片形態(葉長、葉寬)、葉綠素含量、光閤生理特性(淨光閤速率、蒸騰速率)的變化。結果錶明：3種植物隨著遮陰程度的加深，植株的葉片長度、寬度均髮生不同的變化，且透光率25%、8%比50%時植物葉片長和寬有明顯增長，盾蕨、鳳丫蕨最適宜生長的相對光照彊度為8%，狗脊為25%。葉綠素含量隨遮陰程度的增加而增多，在8%光彊時最高，50%光彊時最低。3種蕨類植物的光閤日變化麯線均呈雙峰麯線，有明顯的光閤“午休”現象。淨光閤速率、蒸騰速率均隨遮陰程度的加深而減少。結閤指標變化，利用模糊數學中的隸屬函數法對3種蕨類耐蔭能力排序,依次為：盾蕨＞鳳丫蕨＞狗脊。
이구척(Woodwardia japonica)、순궐(Neolepisorus ovatus)、봉아궐(Coniogramme japonica)위재료，연구3충궐류식물적내음능력。내음성시험설치투광솔분별위50%、25%、8%적3개차음수평，측정불동차음정황하협편형태(협장、협관)、협록소함량、광합생리특성(정광합속솔、증등속솔)적변화。결과표명：3충식물수착차음정도적가심，식주적협편장도、관도균발생불동적변화，차투광솔25%、8%비50%시식물협편장화관유명현증장，순궐、봉아궐최괄의생장적상대광조강도위8%，구척위25%。협록소함량수차음정도적증가이증다，재8%광강시최고，50%광강시최저。3충궐류식물적광합일변화곡선균정쌍봉곡선，유명현적광합“오휴”현상。정광합속솔、증등속솔균수차음정도적가심이감소。결합지표변화，이용모호수학중적대속함수법대3충궐류내음능력배서,의차위：순궐＞봉아궐＞구척。
The shade tolerance ofWoodwardia japonica,Neolepisorus ovatusandConiogramme japonicawere studied in this paper. 3 levels of light transmission rate of 50%, 25% and 8% was made in this experiment. Leaf length, leaf width, chlorophyll content, photosynthetic physiological characteristics (photosynthetic rate, transpiration rate were measured. The results indicated that the growth of leaf length and width changed along with the increase of the shading degree and the growth of leaf length and width at the levels of 25% and 8% of transmission rate of light were obviously higher than that at 50%. And 8% was the most suitable relative light intensity of growth ofNeolepisorus ovatusandConiogramme japonica, while that ofWoodwardia japonica was 25%. Besides, the chlorophyll content was increasing with more shading. The highest light intensity was at the level of 8% and the lowest was at 50%. The daily changes of photosynthetic rate in 3 ferns showed double-peak curves, with obvious phenomenon of photosynthetic “noontime rest”. The photosynthetic rate and transpiration rate were reducing along with shading increasing. According to the changes of indexes, the shading-tolerance abilities of different plants under shading stress by membership function were as follows:Neolepisorus ovatus>Coniogramme japonica>Woodwardia japonica.
