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Factors in Resistance of Peas to the Pea Aphid, Acyrthosiphon pisum (Harr.) (Homoptera: Aphididae). I. The Sugar-Nitrogen Ratio1

  • J. B. Maltais (a1) and J. L. Auclair (a1)

Extract

Differences in resistance of varieties of peas to the pea aphid, Acyrthosiphon pisum (Harr.), have long ago been shown in the field and by controlled rearings under glass, Russell and Morrison (1924, p. 63) apparently being the First to observe differences. Early investigations at Wisconsin by Searb (1932) showed that pea varieties differ in the number of aphids born upon them. Maltais (1937) corraborated these early findings and reported (1950) the development of a pure-line strain of aphid-resistant pea. The influence of resistance in peas upoil aphid development, reproduction, and longevity as investigated by Harrington (1941) with individual plants under controlled conditions in the greenhouse. His results confirmed the inability of the insect to develop and reproduce as fast on a resistant plant as on a susceptible one. Tt has been postulated that the composition of the available food in the host plant plays possibly the most important role in determining the resistance to aphid attack (Evans, 1938; Painter, 1941). Maltais (1948), Auclair and Maltais (1950), and Maltais (1951) gave preliminary reports on the probable factors in varietal resistance in peas.

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Auclair, J. L., and Maltais, J. B.. 1950. Studies on the resistance of plants to aphids by the method of paper partition chromatography. Canadian Ent. 82: 175–76.
Bonner, J. B. 1950. Plant biochemistry. Academic Press Inc., New York10, N.Y.
Evans, A. C. 1938. Physiological relationships between insects and their host plant. I. The effect of the chemical composition of the plant on reproduction and the production of winged forms in Brevicoryne brassicae (L.) (Aphididae). Ann. Appl. Biol. 25: 558–72.
Hammond, L. D. 1940. Determination of the Munson-Walker reducing-sugar values, J. Res. Nat. Bur. Standards 24: 579–96.
Harrington, C. D. 1941. Influence of aphid resistance in peas upon aphid development, reproduction and longevity. J. Econ. Ent. 62: 461–66.
Henwood, A., and Garey, R. M.. 1936. A modified technique for the Kjeldahl procedure. J. Franklin Inst. 221: 531–38.
Maltais, J. B. 1937. Resistance of some varieties of peas to the pea aphid Illinoia pist Kalt. 67th Ann. Rept. Ent. Soc. Ontario, 1936, pp. 4045.
Maltais, J. B. 1948. Le rapport glucide: azote dans la sève de pois et la résistance relative des variétés au puceron, Illinoia pisi Kalt. Assoc. Canad.-Franç. pour l'Avane, des Sci., Ann. 14: 7778.
Maltais, J. B. 1950. New development in breeding of peas for resistance to the pea aphid. 80th Ann. Rept. Ent. Soc. Ontario, 1949: 2930.
Maltais, J. B. 1951. The nitrogen content of different varieties of peas as a factor affecting infestation by Macrosiphum pisi (Kltb.) (Homoptera: Aphididae). A preliminary report. Canadian Ent. 83: 2932.
Painter, R. H. 1941. The economic value and the biologic significance of insect resistance in plants. J. Econ. Ent. 34: 358–57.
Russell, H. L., and Morrison, F. B.. 1924. The fortieth annual report of the Director, 1922–1923. Wisconsin Agr. Expt. Sta. Bull. 362.
Schaefer, C. W. 1938. Physiological conditions which produce wing development in the pea aphid, J. Agr. Res. 57: 825–41.
Searls, E. M. 1932. A preliminary report on the resistance of certain legumes to certain homopterous insects. J. Econ. Ent. 25: 4649.

Factors in Resistance of Peas to the Pea Aphid, Acyrthosiphon pisum (Harr.) (Homoptera: Aphididae). I. The Sugar-Nitrogen Ratio1

  • J. B. Maltais (a1) and J. L. Auclair (a1)

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