Selection of gene resources resistant to soybean dwarf virus YP strain that occurs in soybean production in the Tohoku region

• Published in: Bulletin of the National Agricultural Research Center for Tohoku Region (Japan) no. 104
• Main Authors: Ohto, Y.(National Agricultural Research Center for Tohoku Region, Morioka (Japan)), Abe, A, Odashima, H, Terauchi, H, Honda, K, Ishiguro, K
• Format: Journal Article
• Language: Japanese
• Published: 01.12.2005
• Subjects: ACYRTHOSIPHON PISUM; DISEASE RESISTANCE; GLYCINE MAX; PESO DE LAS SEMILLAS; PLANT VIRUSES; POIDS DES SEMENCES; RESISTANCE AUX MALADIES; RESISTENCIA A LA ENFERMEDAD; SEED WEIGHT; VIRUS DE LAS PLANTAS; VIRUS DES VEGETAUX
• ISSN: 1347-3379

Two strains of Soybean dwarf virus (SbDV) are prevailing in the Tohoku area: YS, which is transmittable by Aulacorthum solani and YP, which is transmittable by Acyrthosiphone pisum. To develop cultivars providing resistance to both of these strains, we selected gene resources resistant to YP strain from 7 cultivars that are resistant to YS strain. The selection of resistant cultivars was conducted under a growth chamber condition using inoculation by aphids. Among yield components of soybean crops, the reduction by SbDV infection was remarkable in the seed weight per plant, the 100 seeds weight, and the grain size in a susceptible cultivar, 'Suzukari'. Among the 7 cultivars, the effects of SbDV infection on these yield components were smaller in two cultivars, 'Tsurukogane' and 'Tsurumusume', than in the cultivar 'Suzukari'. These cultivars appear to be resistant gene resources to the YP strain as well as to the YS strain of SbDV.