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Chapter 14,611

Pollination and seed-setting in diploid and tetraploid red clover (Trifolium pratense L.) under Danish conditions. 1. Seed-setting in relation to the number and type of pollinating insects. 2. Studies of floret morphology in relation to the working speed of honey- and bumble-bees (Hymenoptera : Apo-idae

Dennis, B.A.; Haas, H.

Arsskr. K. Vet.-Landbohosk, 93-117, 118-33. Bibl. 36 and 30

1967


Accession: 014610541

The total number of bees visiting diploid and corresponding tetraploid red clover plots differed little. Bumble-bees were more frequent on the tetraploid plots than on the diploid, and in a cool, wet summer were considered of major importance as pollinators of tetraploid red clover. Nectar-collecting honey- and bumble-bee numbers were considerably higher than those of pollen-collectors in both diploid and tetraploid red clover.

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