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Growth, morphological and physiological responses of alfalfa (Medicago sativa) to phosphorus supply in two alkaline soils
He, Honghua1,2; Peng, Qi2,3; Wang, Xia2,3; Fan, Chenbin1; Pang, Jiayin4,5; Lambers, Hans5,6; Zhang, Xingchang1,2; He, HH (reprint author), Univ Western Australia, Sch Biol Sci, Crawley, WA 6009, Australia.; He, HH (reprint author), Univ Western Australia, Inst Agr, Crawley, WA 6009, Australia.
SubtypeArticle
2017
Source PublicationPLANT AND SOIL
ISSN0032-079X
description.correspondentemailhonghuahe@ms.iswc.ac.cn
Volume416Issue:1-2Pages:565-584
AbstractPhosphorus (P) deficiency is a major problem for alfalfa (Medicago sativa) productivity on alkaline soils on the Loess Plateau, China. Our aim was to investigate growth, morphological and physiological responses of alfalfa to P supply in two alkaline soils when water supply is limited. A pot experiment was carried out to grow alfalfa in two alkaline soils supplied with different rates of P. Parameters of plant growth and root morphology, rhizosphere pH and carboxylates, and plant concentrations of mineral nutrients were measured. Plant growth and nutrient uptake were enhanced by supplying P, but shoot growth was not further increased when P supply was > 20 mu g P g(-1) soil. Specific root length was only responsive to changes in soil P when P supply was low in the loessial soil. The rhizosphere carboxylate amount was significantly greater when no P was supplied than when P was supplied to the loessial soil. The rhizosphere pH was lower than the bulk soil pH, but did not vary with soil P. A P supply of 20 mu g P g(-1) soil was optimal for alfalfa growth. The responses of specific root length and rhizosphere carboxylates depended on soil type.
KeywordAlfalfa (Medicago Sativa) Mineral Nutrients Phosphorus Uptake Rhizosphere Carboxylates Root Morphology
Subject AreaAgriculture ; Plant Sciences
DOI10.1007/s11104-017-3242-9
URL查看原文
Indexed BySCI
Publication PlaceDORDRECHT
Language英语
WOS IDWOS:000405916400042
PublisherSPRINGER
Funding OrganizationNational Natural Science Foundation of China [41301570]; West Light Foundation of the Chinese Academy of Sciences; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China [41301570]; West Light Foundation of the Chinese Academy of Sciences; Fundamental Research Funds for the Central Universities
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Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/7965
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorHe, HH (reprint author), Univ Western Australia, Sch Biol Sci, Crawley, WA 6009, Australia.; He, HH (reprint author), Univ Western Australia, Inst Agr, Crawley, WA 6009, Australia.
Affiliation1.Northwest A & F Univ, State Key Lab Soil Eros & Dryland Farming, Loess Plateau, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Univ Western Australia, Sch Agr & Environm, Crawley, WA 6009, Australia
5.Univ Western Australia, Inst Agr, Crawley, WA 6009, Australia
6.Univ Western Australia, Sch Biol Sci, Crawley, WA 6009, Australia
Recommended Citation
GB/T 7714
He, Honghua,Peng, Qi,Wang, Xia,et al. Growth, morphological and physiological responses of alfalfa (Medicago sativa) to phosphorus supply in two alkaline soils[J]. PLANT AND SOIL,2017,416(1-2):565-584.
APA He, Honghua.,Peng, Qi.,Wang, Xia.,Fan, Chenbin.,Pang, Jiayin.,...&He, HH .(2017).Growth, morphological and physiological responses of alfalfa (Medicago sativa) to phosphorus supply in two alkaline soils.PLANT AND SOIL,416(1-2),565-584.
MLA He, Honghua,et al."Growth, morphological and physiological responses of alfalfa (Medicago sativa) to phosphorus supply in two alkaline soils".PLANT AND SOIL 416.1-2(2017):565-584.
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