梭梭幼苗对光照的形态响应与适应

doi:10.14088/j.cnki.issn0439-8114.2021.13.018

湖北农业科学 ›› 2021, Vol. 60 ›› Issue (13): 93-96.doi: 10.14088/j.cnki.issn0439-8114.2021.13.018

梭梭幼苗对光照的形态响应与适应

胡晓静¹, 张雪琴²

1.新疆农业大学林学与园艺学院,乌鲁木齐 830052;
2.石河子大学农学院,新疆石河子 832000

收稿日期:2020-09-09 出版日期:2021-07-10 发布日期:2021-07-26
作者简介:胡晓静（1978-）,女,山西交城人,讲师,博士,主要从事森林生态与植被恢复的研究工作,（电话）13899850286（电子信箱）395959277@qq.com。
基金资助:
国家自然科学基金项目（31660196; 31660203）

Morphological responses and adaptation of Haloxylon ammodendron seedlings to light

HU Xiao-jing¹, ZHANG Xue-qin²

1. College of Forestry and Horticulture,Xinjiang Agricultural University,Urumqi 830052,China;
2. Agricultural College,Shehezi University,Shehezi 832000,Xinjiang,China

Received:2020-09-09 Online:2021-07-10 Published:2021-07-26

摘要/Abstract

摘要： 在控制试验条件下,以自然光为基础设置 4种透光率（分别为全光照的 100%、75%、35%和5%）,进行为期 1 个生长季的观测及形态指标和存活率的测定,探讨梭梭[Haloxylon ammodendron （C.A.Mey.）Bunge]在幼苗发育阶段对遮阴的响应。结果表明,不同遮阴条件下梭梭幼苗的分枝角度远高于全光照条件下,前者为后者的1.60、1.77和1.89 倍,说明遮阴条件下,幼苗具有更高的分枝角,这是梭梭幼苗对于不同的光照条件在分枝形态上做出的适应性调整;随着光照度的减弱,梭梭幼苗的根、茎、侧枝和总生物量都明显降低,且各光照条件下存在显著差异（P<0.05）,但是梭梭幼苗生物量分配参数在各个光照度下变化规律不明显;梭梭幼苗的平均形态可塑性存在差异。随着光照度的减弱,形态可塑性指数存在减小的趋势,但梭梭在幼苗阶段的形态可塑性指标较小。梭梭幼苗可以通过形态上的一系列可塑性变化来适应不同的光环境以获取最大的碳收益。

关键词: 梭梭[Haloxylon ammodendron （C.A.Mey.）Bunge], 形态可塑性, 光响应

Abstract: To interpret and predict the responses to shading, Haloxylon ammodendron seedlings were grown at four transmittance levels of 100%,75%, 35% and 5% of full natural light in field environment with artificially controlled light regimes for one growing season. Morphology and survival rates of these seedlings were measured to investigate their shade acclimation mechanisms. The results showed that, the branching angle of H. ammodendron seedlings at 100% transmittance level is higher and 1.60, 1.77 and 1.89 times than that at the other transmittance levels. The branches of H. ammodendron seedlings have an adaptation to different light conditions. The root, stem branch biomass and total biomass of H. ammodendron seedlings are significantly reduced with the decreasing of the light intensity and the difference is significant（P<0.05）. But the pattern of the biomass allocation parameters is not obvious. With the decreasing of the light intensity, the index of morphological plasticity has a trend of reduce, but the variation is smaller. We concluded that H. ammodendron seedlings plastically adapt to different light conditions through changes in morphological characteristics to maximize carbon gain.

Key words: Haloxylon ammodendron, morphological plasticity, light response

中图分类号:

胡晓静, 张雪琴. 梭梭幼苗对光照的形态响应与适应[J]. 湖北农业科学, 2021, 60(13): 93-96.

HU Xiao-jing, ZHANG Xue-qin. Morphological responses and adaptation of Haloxylon ammodendron seedlings to light[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(13): 93-96.

参考文献

[1] 江源,MEURER M.德国南部落叶阔叶林下常见植物的光适应性研究——以德国Kraichtal地区落叶阔叶林为例[J]. 植物学报,2001,43(9):960-966.
[2] 许中旗, 黄选瑞, 徐成立, 等. 光照条件对蒙古栎幼苗生长及形态特征的影响[J]. 生态学报, 2009, 29(3):1121-1128.
[3] 国家环境保护局, 中国科学院植物研究所. 中国珍稀濒危保护植物名录[M]. 北京:科学出版社, 1987. 80-81.
[4] 彭闪江, 黄忠良, 彭少麟, 等. 植物天然更新过程中种子和幼苗死亡的影响因素[J]. 广西植物, 2004, 24(2):113-121.
[5] VALLADARES F, WRIGHT S J, LASSO E, et al.Plastic phenotypic response to light of 16 congeneric shrubs from a Panamanian rain forest[J]. Ecology, 2000, 81(7):1925-1936.
[6] PIGLIUCCI M, SCHLICHTING C D.Ontogeneti creaction norms in Lobelia siphilitica(Lobeliaceae):Response to shading[J]. Ecology, 1995, 76:2134-2144.
[7] 冯晓燕, 刘宁, 郭晋平, 等. 控制光照条件下华北山地 4 个混交树种幼苗幼树的形态响应和可塑性[J]. 林业科学, 2013,49(11):12-50.
[8] NIINEMETS Ü,VALLADARES F.Photosynthetic acclimation to simultaneous and interacting environmental stresses along natural light gradients:Optimality and constraints[J]. Plant biology,2004, 6(3):254-268.
[9] ZIEGENHAGEN B, KAUSCH W.Productivity of young shaded oaks(Quercus robur L.) ascorresponding to shootmorphology and leaf anatomy[J].Forest ecology and management, 1995, 72:97-108.
[10] 陈章和, 张德明. 南亚热带森林 24种乔木的种子萌发和幼苗生长[J].热带亚热带植物学报, 1999, 7(1):37-46.
[11] POORTER L.Growth response of 15 rain-forest tree species to a light gradient:The relative importance of morphological and physiological traits[J].Functional ecology, 1999, 13:396-410.
[12] 陈圣宾, 宋爱琴, 李振基.森林幼苗更新对光环境异质性的响应研究进展[J].应用生态学报, 2005, 16(2):365-370.
[13] 齐欣, 曹坤芳, 冯玉龙. 热带雨林蒲桃属 3 个树种的幼苗光合作用对生长光强的适应[J].植物生态学报, 2004, 28(1): 31-38.
[14] 曹建新, 张光飞, 张磊, 等. 滇青冈幼苗的光合和生长对不同生长光强的适应[J].广西植物, 2008,28(1): 126-129.
[15] KING D A.Allocation of aboveground growth is related to light intemperate deciduous saplings[J]. Functional ecology, 2003,17(4):482-488.
[16] KAREL M, RAISON R J, ANATOLYS P.Critical analysis of root:Shoot ratios in terrestrial biomes[J]. Global change biology, 2006, 12:84-96.
[17] GARDINER E S, HODGES J D.Growth and biomass distribution of cherry bark oak (Quercus Pagoda Raf.) seedlingsas influenced by light availability[J]. Forest ecology and management,1998, 108:127-134.
[18] DEWITT T,SIH J A,WILSON D S.Costs and limits of phenotypic plasticity[J].Trends in ecology and evolution,1998, 13(3):77-81.
[19] VALLADARES F,BALAGUER L,MARTÍNEZ-FERRI E,et al. Plasticity,instability and canalization: Is the phenotypic variation in seedlings of sclerophyll oaks consistent with the environmental unpredictability of Mediterranean ecosystems?[J]. New phytologist,2002,156(3):457-467.

梭梭幼苗对光照的形态响应与适应

Morphological responses and adaptation of Haloxylon ammodendron seedlings to light

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