Growth Responses of Twelve Wheat Cultivars and their Phosphorus Utilization from Rock Phosphate
作者:
Maqsood A. Gill,
Rahmatullah,
M. Salim,
期刊:
Journal of Agronomy and Crop Science
(WILEY Available online 1994)
卷期:
Volume 173,
issue 3‐4
页码: 204-209
ISSN:0931-2250
年代: 1994
DOI:10.1111/j.1439-037X.1994.tb00555.x
出版商: Blackwell Publishing Ltd
关键词: Proton release;acidification;genetic differences;root medium pH;phosphorus uptake;biomass production
数据来源: WILEY
摘要:
AbstractGrowth responses of 12 wheat cultivars and their phosphorus utilization were studied in a greenhouse. They were grown for 18 days in a solution containing rock phosphate as the phosphorus (p) source. Biomass of 26 day old plants of all the cultivars varied significantly whereas their shoot to root ratio stayed constant. The dry matter yield of all the 12 cultivars was significantly correlated with the p uptake (r = 0.74). Whereas the higher p uptake by all the cultivars was significantly (P<0.01) related to the drop in the root medium pH, which was presumably owing to the H+efflux from their roots. The wheat cultivar Blue Silver proved to be the most efficient p user and therefore seems to have the highest potential of making best growth in soils with poor p availability among the 12 wheat cultivars under investigation.
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