Inheritance of resistance to the pea aphid in alfalfa hybrids
AuthorsL. G. Jones
Fred N. Briggs
R. A. Blanchard
Authors AffiliationsL. G. Jones was Formerly Entomologist, United States Bureau of Entomology and Plant Quarantine, Agricultural Research Administration; Fred N. Briggs was Professor of Agronomy, University of California, and Agronomist in the California Agricultural Experiment Station; R. A. Blanchard was Entomologist, United States Bureau of Entomology and Plant Quarantine, Agricultural Research Administration.
Hilgardia 20(2):9-17. DOI:10.3733/hilg.v20n02p009. June 1950.
The pea aphid has caused varying amounts of damage in alfalfa fields, the damage often being severe in the Antelope Valley of California.
A number of undamaged alfalfa plants collected in this region proved to be heterozygous for resistance. A homozygous resistant plant derived from one of these was crossed with a susceptible plant, and the inheritance of resistance was studied in the F2 and F3 generations.
Resistance resulted from a dominant and a recessive gene. They were linked, with a crossover value of 28 per cent indicated.
Bigger John H. Insect resistance in corn. Amer. Soc. Agron. Jour. 1943. 35:689-94.
Blanchard Ralph A. Insect resistance in forage plants. Amer. Soc. Agron. Jour. 1943. 35:716-24.
Blanchard Ralph A., Dudley John E. Alfalfa plants resistant to the pea aphid. Jour. Econ. Ent. 1934. 27:262-64.
Dahms R. G. Insect resistance in sorghum and cotton. Amer. Soc. Agron. Jour. 1943. 35:704-15. DOI: 10.2134/agronj1943.00021962003500080007x [CrossRef]
Jones Elmer T. Insect resistance in wheat. Amer. Soc. Agron. Jour. 1943. 35:695-703.
Painter Reginald H. Insect resistance of plants in relation to insect physiology and habits. Amer. Soc. Agron. Jour. 1943. 35:725-32.
Tysdal H. M., Kiesselbach T. A., Westover H. L. Alfalfa breeding. Nebraska Agr. Exp. Sta. Res. Bul. 1942. 124:1-46.
Also in this issue:Insemination techniques and timing found important factors in turkey fertility studies on a commercial farm
Controlling height of hydrangeas with growth retardants
Micronutrient deficiencies of Copic Bay soils in Tulelake Basin
Date harvest mechanization
Picloram …a promising new herbicide for control of woody plant
Encore and Pixie … two new mandarin hybrids with unusually late seasons of use
Citrus problems in West Fresno County
Inheritance of resistance to scald in barley
Physiologic and genetic studies with the stripe disease in barley