Effects of the ratio of available light and nitrogen on the growth of tree seedlings

有效光氮比对树苗生长的影响

• 批准号: 15580125
• 负责人: KAWAGUCHI Hideyuki
• 金额: $ 1.98万
• 依托单位: Shimane University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15580125/
• 关键词: resource ratio; light; nitrogen; trade-off; plasticity; seed size; Mallotusjaponicus; Aesculus turbinata; 樹木実生; 種子重; 養分; 花粉親; 遺伝的近縁度; アロケーション; 成長; 資源利用効率; 樹木個体; 相対的不足

Effects of the ratio and amount of available light and nitrogen on the plasticity of resource use of tree seedlings were investigated. Growth of Mallotus japonicus were measured under different ratio and amount of available light and nitrogen. Seedlings of Aesculus turbinata with different seed size are measured under different ratio and amount of available light and nitrogen. Effects of genetic relatedness on the growth of A.turbinata seedlings were investigated.Nitrogen use efficiency of M.japonicus seedlings increased in response to the lower amount of available nitrogen and the lower ratio of available nitrogen to light, that is, absolute and relative deficiencies of available nitrogen. Light use efficiency of M.japonicus seedlings increased in response to the lower amount of available light and the lower ratio of available light to nitrogen. Trade-offs between two resources of light and nitrogen were observed on the growth of M.japonicus seedlings and were achieved by the morphological and physiological plasticity in response to the relative deficiency of resources.Morphology and weight of A.turbinata seedlings of 50 days after germination were dependent on the amount of available light and the seed size and their ratio. Morphology and weight of A.turbinata seedlings of one year after germination were dependent on the amount of available light as well as that of available nitrogen and their ratio. Effects of the ratio and amount of available light and nitrogen on the plasticity of resource use were observed just after germination in M.japonicus with small seed size and non- deterministic growth, while the effects became obvious later in A.turbinata with large seed size and deterministic growth. Effects of genetic relatedness on the growth of A.turbinata seedlings were not obvious.

研究了有效光氮比例和有效氮量对苗木资源利用可塑性的影响。研究了不同光氮比和氮素用量对野桐生长的影响。以不同大小的七叶树种子为试材，在不同的光氮比和氮素用量下，对七叶树幼苗进行了测定。结果表明，低碱解氮和低碱解氮/光比（即碱解氮绝对和相对不足）均能显著提高大扁杏幼苗的氮素利用效率。有效光和有效光氮比的降低使紫茎泽兰幼苗的光能利用效率提高。光氮两种资源对白木香幼苗生长的影响表现为光氮平衡，并通过形态和生理可塑性对资源的相对缺乏做出反应，萌发后50 d的白木香幼苗形态和重量取决于有效光和种子大小及其比例。萌发后1年的三角枫幼苗的形态和重量取决于有效光和有效氮的量及其比例。有效光氮比和有效氮量对小种子、非确定性生长的白芥种子萌发后的资源利用可塑性有明显影响，而对大种子、确定性生长的白芥种子萌发后的资源利用可塑性有明显影响。遗传相关性对陀螺藜幼苗生长的影响不明显。

项目成果

Sex ratio and gender-dependent neighboring effects in Podocarpus nagi, a dioecious tree

• DOI: 10.1007/s11258-005-2210-2
• 发表时间: 2005-04
• 期刊: Plant Ecology
• 影响因子: 1.7
• 作者: Satoshi Nanami;H. Kawaguchi;T. Yamakura

Growth pattern and leaf morphology of Shorea parvistipulata saplings in a tropical rain forest of Sarawak, Malaysia.

马来西亚沙捞越州热带雨林中望天树幼苗的生长模式和叶片形态。

• 发表时间: 2005
• 期刊: Journal of Tropical Ecology 21
• 作者: Enoki;T.;Kawaguchi;H.;Nakashizuka;T.;Hamid;A.A.
• 通讯作者: A.A.

S.Nanami, H.Kawaguchi, T.Yamakura: "Sex change towards female in dying Acer rufinerve trees"Annals of Botany. (in press). (2004)

S.Nanami、H.Kawaguchi、T.Yamakura：“垂死的红叶枫树中的性别向雌性转变”《植物学年鉴》。

Sex change towards female in dying Acer rufinerve trees

垂死的红叶枫树的性别转变为雌性

• 发表时间: 2004
• 期刊: Annals of Botany 93・6
• 作者: Tsutomu Enoki et al.;Satoshi Nanami er al.;Tsutomu Enoki et al.;Satoshi Nanami et al.;Tsutomu Enoki et al.;Satoshi Nanami et al.;Satoshi Nanami er al.
• 通讯作者: Satoshi Nanami er al.

R.Tateno, S.Katagiri, H.Kawaguchi, Y.Nagayama, C.Li, A.Sugimoto, K.Koba: "Use of foliar ^<15>N and ^<13>C abundance to evaluate effects of microbiotic crust on nitrogen and water utilization in Pinus massoniana in deteriorated pine stands of south China"E

R.Tateno、S.Katagiri、H.Kawaguchi、Y.Nagayama、C.Li、A.Sugimoto、K.Koba：“利用叶面 ^<15>N 和 ^<13>C 丰度来评估微生物结皮的影响