Reference Report for IND20448929
| Title: | Resistance of hardseeded soybean lines to seed infection by Phomopsis, other fungi, and soybean mosaic virus |
| Authors: | Roy, K.W., Keith, B.C., Andrews, C.H. |
| Source: | Can. J. Plant Pathol. 1994, 16(2):122-128 |
| Abstract: | Seed infection in a susceptible, permeable seed coat genotype of soybean (cv. Forrest) was compared to that in hardseeded lines possessing the impermeable seed coat character. Injection of Phomopsis longicolla conidia into seed cavities of pods produced high levels of seed infection in Forrest and demonstrated the resistance of a hardseeded line, D67-5677-1. In this hardseeded line, and three other hardseeded lines, resistance to naturally occurring infection by Phomopsis was consistently expressed during 8 years of experimentation. Some degree of resistance to naturally occurring seed infection by Fusarium pallidoroseum (syn. F. semitectum), Alternaria alternata and Cercospora kikuchii was also observed, but less consistently. Frequencies of occurrence of impermeable seeds and of seeds infected with Phomopsis were negatively correlated. Although evidence indicated that seed impermeability per se conferred resistance to Phomopsis, other data suggested that impermeability alone did not account for this resistance. Some hardseeded lines appeared to have resistance to seed coat mottling caused by soybean mosaic virus. Incidence of mottled seeds and incidence of impermeable seeds were negatively correlated |
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