ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Alfalfa resistance to post-harvest Aspergillus species: response to selection.

Kimbeng, C. A.; Smith, S. R., Jr.; Babij, V.; Wittenberg, K. M.;

Canadian Journal of Plant Science Year: 2000 Vol: 80 Issue: 4 Pages: 755-763 Ref: 20 ref.

2000

บทคัดย่อ

The response to selection for post-harvest fungal resistance in alfalfa (Medicago sativa) was investigated. Initially, 1144 genotypes from 22 alfalfa cultivars were screened for post-harvest fungal resistance with a combination of Aspergillus species. Forty resistant and 40 susceptible genotypes were selected by measuring percentage of leaf area with fungal coverage. The selected genotypes and their maternally derived half-sib families were screened for resistance to Aspergillus repens. Mean leaf area with fungal coverage was significantly (P<0.05) lower for resistant than susceptible parental genotypes and maternal half-sib families. Percent leaf area with fungal coverage ranged from 13.2 to 70.5% (mean, 41.7 plus or minus 1.7) among resistant and 28.2-83.4% (mean, 50.2 plus or minus 1.7) among susceptible parental genotypes. Among the maternal half-sib families, resistant families ranged from 14.0 to 51.3% (mean, 32.1 plus or minus 1.8) and susceptible families from 18.8 to 60.1% (mean, 40.3 p

lus or minus 1.9). These results show a positive response to selection for post-harvest fungal resistance in alfalfa.