Accessibility navigation


Genotype and fungicide effects on late-season root growth of winter wheat

Ford, K. E., Gregory, P. J., Gooding, M. J. and Pepler, S. (2006) Genotype and fungicide effects on late-season root growth of winter wheat. Plant and Soil, 284 (1-2). pp. 33-44. ISSN 0032-079X

Full text not archived in this repository.

To link to this article DOI: 10.1007/s11104-006-0028-x

Abstract/Summary

The aim of this work was to investigate differences among genotypes in post-anthesis root growth and distribution of modern UK winter wheat cultivars, and the effects of fungicide applications. Post-anthesis root growth of up to six cultivars of winter wheat (Triticum aestivum L.), given either one or three applications of fungicide, was studied in field experiments during two seasons. Total root mass remained unchanged between GS63 (anthesis) and GS85, but root length increased significantly from 14.7 to 31.4 km m(2) in one season. Overall, there was no evidence for a decline in either root mass or length during grain filling. Root mass as a proportion of total plant mass was about 0.05 at GS85. There were significant differences among cultivars in root length and mass especially below 30 cm. Malacca had the smallest root length and Savannah the largest, and Shamrock had a significantly larger root system below 40 cm in both seasons. Fungicide applied at ear emergence had no significant effect on root mass in either season but increased root length (P < 0.01) in the more disease-prone season. By maintaining a green canopy for longer, fungicide applied at flag leaf emergence may have resulted in delayed senescence of the root system and contributed to the post-anthesis maintenance of root mass and length.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Agriculture, Policy and Development
ID Code:8508
Uncontrolled Keywords:fungicide, root length, root mass, Triticum aestivum, winter wheat, HIGH-YIELDING CROPS, NITROGEN UPTAKE, SPRING BARLEY, SHOOT GROWTH, FIELD, WATER, SOIL, SYSTEMS, CARBON, REMOBILIZATION

Centaur Editors: Update this record

Page navigation