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Path-Coefficient Analysis Of Correlation Between Honey Bee Activity And Seed Yield In (Allium Cepa L.), N. S. Shasha'a, William P. Nye, W. F. Campbell
Path-Coefficient Analysis Of Correlation Between Honey Bee Activity And Seed Yield In (Allium Cepa L.), N. S. Shasha'a, William P. Nye, W. F. Campbell
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A path-coefficient analysis was used to furnish information on the inter-relationships of pollinating insect activity and components of seed yield in inbreds of Allium cepa L. The inbreds differed very significantly in their attentiveness to pollinating insects. Only one inbred exhibited a significant correlation (P <0.05 positive) between numbers of honey bees and seed yields. Separating the correlation coefficients into components of direct and indirect effects indicated that pollination attractiveness was not the limiting factor in seed set for inbreds in the experiment. Moreover, most of the variation in seed yield could be attributed to indirect effects on the components of yield, umbels per plant, flowers per umbel, percent per fertilized flower, and seeds per fertilized flower.
The Bees Of Curlew Valley (Utah And Idaho), George E. Bohart, G. F. Knowlton
The Bees Of Curlew Valley (Utah And Idaho), George E. Bohart, G. F. Knowlton
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In America north of Mexico there are an estimated 4,000 species of bees distributed in approximately 110 genera. In Curlew Valley, 132 species in 33 genera have been identified, and approximately 25 additional unidentified species have been collected. It is likely that at least 225 species in 40 genera should be found eventually. The bee fauna of Curlew Valley can be roughly divided into the following 4 categories on a seasonal basis.
Insect Pollination And Seed Set Of Onions (Allium Cepa L.), William P. Nye, N. S. Shasha'a, W. F. Campbell, A. R. Hamson
Insect Pollination And Seed Set Of Onions (Allium Cepa L.), William P. Nye, N. S. Shasha'a, W. F. Campbell, A. R. Hamson
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No abstract provided.