WATER RELATIONS OF MYCORRHIZAL AND PHOSPHORUS-FERTILIZED NON-MYCORRHIZAL CITRUS UNDER DROUGHT STRESS

Rootstock seedlings of Carrizo citrange (Poncirus trifoliata (L.) Raf. x C. Sinensis (L.) Osbeck) and sour orange (Citrus aurontium L.) were grown in a sandy soil low in phosphorus (P) and either inoculated with Glomus intraradices Schenck & Smith (vesicular-arbuscular mycorrhizal; VAM) or ferti...

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Veröffentlicht in:The New phytologist. - 1979. - 105(1987), 3 vom: 20. März, Seite 411-419
1. Verfasser: Graham, J H (VerfasserIn)
Weitere Verfasser: Syvertsen, J P, Smith, M L Jr
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 1987
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Whole-plant transpiration leaf water relations relative growth rate root hydraulic conductivity
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100 1 |a Graham, J H  |e verfasserin  |4 aut 
245 1 0 |a WATER RELATIONS OF MYCORRHIZAL AND PHOSPHORUS-FERTILIZED NON-MYCORRHIZAL CITRUS UNDER DROUGHT STRESS 
264 1 |c 1987 
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520 |a Rootstock seedlings of Carrizo citrange (Poncirus trifoliata (L.) Raf. x C. Sinensis (L.) Osbeck) and sour orange (Citrus aurontium L.) were grown in a sandy soil low in phosphorus (P) and either inoculated with Glomus intraradices Schenck & Smith (vesicular-arbuscular mycorrhizal; VAM) or fertilized with soluble P (non-mycorrhizal; NM). Five-month-old VAM and NM seedlings of each rootstock were comparable in size, P sufficiency, and relative growth rate whether they were kept well-watered or subjected to two drought-stress cycles of short duration. Under well-watered conditions, whole plant transpiration, leaf water status, and root hydraulic conductivity were similar for VAM and NM plants of each rootstock. During drought-stress and recovery periods, VAM plants also had very comparable whole-plant transpiration rates and leaf water potentials to NM plants, but mycorrhiza reduced root hydraulic conductivity of Carrizo citrange and sour orange 66 and 49%, respectively. These data do not support the hypothesis that mycorrhiza significantly enhance water relations of citrus under the drought-stress conditions studied 
650 4 |a Journal Article 
650 4 |a Whole-plant transpiration 
650 4 |a leaf water relations 
650 4 |a relative growth rate 
650 4 |a root hydraulic conductivity 
700 1 |a Syvertsen, J P  |e verfasserin  |4 aut 
700 1 |a Smith, M L  |c Jr  |e verfasserin  |4 aut 
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