Claim · model-written summary
P absorption rate of Phaseolus vulgaris lines was negatively correlated with root dry weight.
Phaseolus vulgarisVerbatim
e0“Excised roots were used for evaluating methods and in identifying differences in rates of P absorption by 59 lines of Phaseolus vulgaris”
e1“Although the P absorption rate was negatively correlated with root dry weight”
Title
Variability of Phosphorus Uptake and Translocation in Phaseolus vulgaris L. under Phosphorus Stress1
Dale T. Lindgren; W. H. Gabelman; G. C. Gerloff Journal of the American Society for Horticultural Science 1977. doi:10.21273/jashs.102.5.674
Other claims from this paper (11)
- Observation Large variations in P absorption rates between Phaseolus vulgaris lines were noted.
- Observation Lines with similar excised root dry weights could be isolated that displayed large differences in P absorption rates.
- Method / resource P absorption rate of the terminal 3.5 cm root segment satisfactorily expressed P absorption by other portions of the root system.
- Intervention effect As the pretreatment P level increased from 3 to 31 mg/plant, P absorption by excised roots decreased.
- Intervention effect As the P level increased from 31 to 62 mg/plant, P absorption by excised roots leveled off.
- Association Rates of P absorption by excised roots varied with plant age.
- Observation Relative P absorption values between efficient and inefficient lines remained constant at each plant age.
- Observation Variance for P absorption by excised roots due to environment was high.
- Observation Narrow sense heritability of P absorption, from parent-offspring regression in efficient x inefficient line families, was about 40%.
- Observation Data on P uptake by excised roots did not predict P uptake and translocation in intact plants.
- Recommendation The authors state that a reliable standardized technique for intact plant ion absorption studies is necessary for accurate comparisons between plants.