Maize root system growth and development as influenced by phosphorus deficiency

Root growth and development are critical for early phosphorus uptake by plants since P is relatively unavailable and immobile in many soils

A. Mollier

2012

Scholarcy highlights

  • Root growth and development are critical for early phosphorus uptake by plants since P is relatively unavailable and immobile in many soils
  • The leaf dry weight per unit leaf area increased with time, but it did not appear to be affected by P starvation when plants of similar leaf area were compared
  • The observed effect of P starvation on leaf area per plant is consistent with results of other authors who have reported a rapid and severe effect of P deficiency on leaf growth
  • This reduced leaf area accounts for a major part of the reduced total biomass per plant
  • At a more severe P-deprivation level, the radiation use efficiency was affected suggesting that the net photosynthesis per unit leaf area was reduced
  • These results are consistent with the findings of several authors who have studied the effects of P deficiency on photosynthesis
  • Several authors have observed that the increased root/shoot ratio in phosphatedeficient plants was associated with a higher carbohydrate content in the roots

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