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- Title
The Effects of Shading on the Yield Components of Six ‘Leafless’ Pea Genotypes.
- Authors
HEDLEY, C. L.; AMBROSE, M. J.
- Abstract
The effect of unshaded, 30 and 80 per cent shade conditions on the growth rate and yield composition of six ‘leafless’ pea () genotypes has been determined. No evidence for a photoassimilate source limitation was found in the unshaded and 30 per cent shade treatments, but 80 per cent shade significantly reduced the yield and the rate of d. wt and node production of all the genotypes. Yield development was followed in each environment by determining the number of flowering nodes, the number of flowers produced per node, the pod number per node and the seed number per pod. The theoretical maximum for each of these yield components was determined and compared with the actual level realized by the plant. Approximately 50 per cent of the theoretical potential of each yield component was realized and this appeared to be independent of the shade treatment. This stepwise reduction in potential yield throughout the development of the plant was similar to that reported for conventional pea plants.
- Publication
Annals of Botany, 1979, Vol 44, Issue 4, p469
- ISSN
0305-7364
- Publication type
Article