Mycorrhizal infection and high soil phosphorus improve vegetative growth and the female and male functions in tomato
Article first published online: 4 APR 2002
Volume 154, Issue 1, pages 255–264, April 2002
How to Cite
Poulton, J. L., Bryla, D., Koide, R. T. and Stephenson, A. G. (2002), Mycorrhizal infection and high soil phosphorus improve vegetative growth and the female and male functions in tomato. New Phytologist, 154: 255–264. doi: 10.1046/j.1469-8137.2002.00366.x
- Issue published online: 4 APR 2002
- Article first published online: 4 APR 2002
- Received: 28 September 2001 Accepted: 22 November 2001
- Lycopersicon esculentum, fitness, fruit set, mycorrhiza, pollen, resource allocation, soil fertility, vegetative growth
- •To further characterize the effects of mycorrhizal infection and soil phosphorus (P) availability on plant fitness, this study examined their effects on the female and male functions, as well as vegetative growth of tomato (Lycopersicon esculentum).
- •Two cultivars of tomato were grown in a glasshouse under three treatment combinations: nonmycorrhizal, low P (NMPO); nonmycorrhizal, high P (NMP3); and mycorrhizal, low P (MPO).
- •Mycorrhizal infection and high soil P conditions improved several vegetative (leaf area, days until first flower and leaf P concentration) and reproductive traits (total flower production, fruit mass, seed number and pollen production per plant, and mean pollen production per flower). In general, mycorrhizal and P responses were greater for reproductive traits than vegetative traits. In one cultivar, these responses were greater for the male function than the female function.
- •Thus, mycorrhizal infection and high soil P conditions enhanced fitness through both the female and male functions. Similar trends were usually observed in the NMP3 and MPO treatments, suggesting that mycorrhizal effects were largely the result of improved P acquisition.