Abstract
Ray achenes ofGalinsoga parviflora Cav. are significantly heavier, higher in calorific value and contain more protien and carbohydrate than disc achenes. The ray achenes showed early and better germination from different sowing depths and the seedlings from these grew better under nutrient deficient conditions. The differential response of the 2 achenes has been attributed to differences in the seed reserves and has an adaptive significance.
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