Effects of phosphorus and drought stresses on dry matter and phosphorus allocation in wheat

Rodriguez, D. and Goudriaan, J. (1995) Effects of phosphorus and drought stresses on dry matter and phosphorus allocation in wheat. Journal of Plant Nutrition, 18 11: 2501-2517.


Author Rodriguez, D.
Goudriaan, J.
Title Effects of phosphorus and drought stresses on dry matter and phosphorus allocation in wheat
Journal name Journal of Plant Nutrition   Check publisher's open access policy
ISSN 0190-4167
1532-4087
Publication date 1995
Sub-type Article (original research)
DOI 10.1080/01904169509365080
Volume 18
Issue 11
Start page 2501
End page 2517
Total pages 17
Place of publication Philadelphia, PA, United States
Publisher Taylor & Francis
Language eng
Formatted abstract The effect of phosphorus (P) and soil water availability (W) on the growth and development of wheat plants (Triticum aestivum L. cv. Minaret) was studied in a pot experiment. Four levels of P supply (0, 15, 30, and 100 μgP/g soil) were applied before sowing. Thirty‐four days after sowing (DAS), the pots were kept near 100% of field capacity (FC). From 34 DAS until one week before anthesis (67 DAS), half of the pots were maintained between 60–70% FC. Control pots were kept at 85–95% FC by weighing and watering the pots every two to three days. Shoots were harvested four times before anthesis and twice after. At each harvest, dry matter and P accumulation were measured in leaves, stems, and ears. In this study, thermal time until anthesis was inversely related to the level of P application. Phosphorus additioning affected the allocation of biomass and P in aerial plant organs. Plants growing only with soil P showed a delay in the allocation of dry matter and P into leaves and stems with respect to plants fertilized with 100 μg P/g of soil. In this study, the final composition of the grain depended on re‐mobilization from other plant organs. Evidence of independent re‐mobilization of carbohydrates and P towards the ear is presented, and the pattern of plant development as well as the relationships between development and dry matter and P allocation are discussed.
Keyword Water-use
Barley
Carbon
Growth
Plants
Model
Leaf
Soil
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
 
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