The integration of whole-root and cellular hydraulic conductivities in cereal roots

  title={The integration of whole-root and cellular hydraulic conductivities in cereal roots},
  author={Heddwyn Jones and Roger Allen Leigh and R. Gareth Wyn Jones and A. Deri Tomos},
The hydraulic conductivities of excised whole root systems of wheat (Triticum aestivum L. cv. Atou) and of single excised roots of wheat and maize (Zea mays L. cv. Passat) were measured using an osmotically induced back-flow technique. Ninety minutes after excision the values for single excised roots ranged from 1.6·10-8 to 5.5·10-8 m·s-1·MPa-1 in wheat and from 0.9·10-8 to 4.8·10-8 m·s-1·MPa-1 in maize. The main source of variation was a decrease in the value as root length increased. The… CONTINUE READING

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