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This article in CS

  1. Vol. 9 No. 5, p. 640-642
     
    Received: Mar 17, 1969


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doi:10.2135/cropsci1969.0011183X000900050040x

Evaluation of Annual Species of Medicago as Sources of Alfalfa Weevil Resistance1

  1. D. K. Barnes and
  2. R. H. Ratchliffe2

Abstract

Abstract

Seventy-nine entries representing 16 annual Medicago species were evaluated for resistance to the alfalfa weevil, using resistance to adult feeding, larval development, and ovipositicin tests. M. rugosa had resistance by all three selection criteria. M. minima, M. polymorpha, M. scutellata, and M.. truncatula contained entries that were classified as resistant to two of the selection criteria. The ovipositioii resistance of some entries was apparently due either to lack of a stimulant to trigger oviposition or to a deterrent that limited oviposition.

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