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Phosphorus supply mycorrhizal infection and plant of offspring vigor


, : Phosphorus supply mycorrhizal infection and plant of offspring vigor. Functional Ecology 4(5): 695-702

This paper documents the effects of phosphorus supply to Sinapis alba L. (Brassicaceae) and of mycorrhizal infection and phosphorus supply to Abutilon theophrasti Medic. (Malvaceae) on offspring vigour. Both maternal phosphorus supply and mycorrhizal infection of maternal plants had significant effects on seed weight, seed nitrogen content and seed phosphorus content but did not influence emergence rate. In all but a few cases, maternal phosphorus supply did not significantly affect growth or root:shoot allocation of offspring in either Sinapis or Abutilon. Mycorrhizal infection of Abutilon maternal plants, however, did have significant effects on offspring vigour as measured by shoot weight, root weight, height and leaf area. Some of the variation in these variables (about 25%) could be attributed to variation in total seed phosphorus content, but mycorrhizal infection may have influenced offspring vigour through effects on variation in phosphorus fractions within the seed. The results suggest that mycorrhizal infection may influence fitness through effects on offspring vigour.

US$19.90

DOI: 10.2307/2389738


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