川滇柳与青杨属间嫁接幼苗对氮素缺乏的生理响应 | |
Alternative Title | Physiological responses of Salix rehderiana and Populus cathayana grafted seedlings to nitrogen deficiency |
韩清泉1,2; 宋海凤1,2; 唐铎腾1,2![]() ![]() | |
Corresponding Author | 张胜 |
2017-12-18 | |
Source Publication | 应用生态学报
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ISSN | 1001-9332 |
Volume | 28Issue:12Pages:3833-3840 |
Other Abstract | 为杨柳科的柳属和杨属植物对氮素缺乏的形态和生理响应不同.本文通过川滇柳和青杨远缘嫁接,研究不同嫁接组合幼苗在氮缺乏条件下的成活率、生长状况、生物量累积与分配、气体交换参数及非结构性碳水化合物的差异响应,分析杨柳科植物远缘嫁接的可行性及嫁接对植物抗缺氮能力的影响.结果表明:川滇柳和青杨远缘嫁接的亲和性较好,川滇柳/青杨(S/P)和青杨/川滇柳(P/S)嫁接组合的成活率分别为74%和96%;缺氮显著降低了所有嫁接组合幼苗的成活率,其中S/P幼苗的成活率降低最明显,仅为53.3%,而P/S幼苗的成活率为86.7%.无论对照还是缺氮条件下,青杨做接穗的嫁接组合(P/P和P/S)的株高、基茎、生物量积累、净光合速率均大于川滇柳做接穗的嫁接组合(S/S和S/P);缺氮显著减少了所有嫁接组合的生长、生物量及净光合速率.川滇柳做砧木的嫁接组合(S/S和P/S)的根冠比显著高于青杨做砧木的嫁接组合(S/P和P/P),表明川滇柳可将更多的光合产物分配到地下部分,而青杨则将更多的光合产物投入到地上部分.各嫁接组合根中非结构性碳水化合物受缺氮胁迫最明显,除S/P嫁接组合外,P/P、S/S和P/S根中的淀粉、果糖、蔗糖和可溶性总糖浓度均显著升高,且表现为P/P和P/S显著高于S/S和S/P. ;Morphological and physiological responses ofSalix plants are different fromPopulus to nitrogen (N) deficiency. In this study, grafting technology was used in S. rehderiana and P. cathayana to investigate the graft compatibility of Salix andPopulus, and whether grafting could improve the resistance to N deficiency in Salicaceae plants. The survival rate, growth, biomass accumulation and allocation, gas exchange parameters and nonstructural carbohydrates (NSCs) were measured to evaluate the resistance to N deficiency among different grafting combinations. The results showed that the graft compatibility betweenS. rehderiana and P. cathayana was quite high. The survival rate was 74% and 96% in S/P (S. rehderiana was used as scions andP. cathayana as rootstocks) and P/S (P. cathayana was used as scions andS. rehderiana as rootstocks) combinations, respectively. N deficiency reduced the survival rate in all grafting combinations, which were 53.3% and 86.7% in S/P and P/S, respectively. The survival rate of S/P was lower than that of the other grafting combinations. Under control and Ndeficient conditions, the height, basal diameter, biomass and net photosynthetic rate (Pn) of P/P and P/S combinations were higher than those of S/S and S/P combinations. N deficiency significantly reduced growth rate, biomass accumulation andPn in all grafting combinations. The rate between root biomass and aboveground biomass ofS. rehderiana rootstock combinations (S/S and P/S) was significantly higher than those ofP. cathayana rootstock combinations (P/P and S/P) under both control and N deficient conditions. It indicated that more photosynthates might be allocated to belowground in S. rehderiana, while to aboveground inP. cathayana. The NSCs in roots of all grafting combinations were more sensitive to N deficiency than in stems and leaves. Except for the S/P combination, the starch, fructose, sucrose and total soluble sugar concentrations were significantly increased in roots in P/P, S/S and P/S combinations. Additionally, under N deficient condition, the NSCs contents were significantly higher in P/P and P/S combinations than in S/S and S/P combinations. |
Keyword | 嫁接 缺氮 光合作用 非结构性碳水化合物 |
DOI | 10.13287/j.1001-9332.201712.004 |
Indexed By | CSCD ; 北大中文核心 |
Language | 中文 |
CSCD ID | CSCD:6128798 |
Funding Organization | 国家自然科学基金优秀青年基金项目(31322014) ; 中国科学院前沿重点研究项目(QYZDB-SSW-DQC037) |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.imde.ac.cn/handle/131551/20692 |
Collection | 山地表生过程与生态调控重点实验室 |
Affiliation | 1.中国科学院、水利部成都山地灾害与环境研究所, 山地表生过程与生态调控重点实验室 2.中国科学院大学 |
First Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
Recommended Citation GB/T 7714 | 韩清泉,宋海凤,唐铎腾,等. 川滇柳与青杨属间嫁接幼苗对氮素缺乏的生理响应[J]. 应用生态学报,2017,28(12):3833-3840. |
APA | 韩清泉,宋海凤,唐铎腾,&张胜.(2017).川滇柳与青杨属间嫁接幼苗对氮素缺乏的生理响应.应用生态学报,28(12),3833-3840. |
MLA | 韩清泉,et al."川滇柳与青杨属间嫁接幼苗对氮素缺乏的生理响应".应用生态学报 28.12(2017):3833-3840. |
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