Genetics of resistance to an isolate ofAlternaria triticinacausing leaf blight of wheat

✍ Scribed by V. P. Kulshrestha; M. V. Rao

• Publisher: Springer
• Year: 1976
• Tongue: English
• Weight: 340 KB
• Volume: 25
• Category: Article
• ISSN: 0014-2336
• DOI: 10.1007/bf00041617

✦ Synopsis

Genetics of field resistance to Alternaria triticina was studied in a diallel set of crosses using ten cultivars of wheat which included eight resistant and two susceptibles.

Susceptibility if NP 830 was found to be controlled by a dominant gene and that of NP 891 by two dominant complementary genes. The resistant cultivars NP 824, NP 835, NP 852, C 281, E 5477, E 5550, E 5878 and UP 303 carry the recessive alleles of the genes present in NP 830 and NP 891.

All the resistant cultivars used in the study carried identical gene(s) for resistance to A. triticina. The gene(s) responsible for resistance appear to have come from NP 4 and Turkey, both of which seem to have evolved simultaneously in nature.

The gene(s) for susceptibility in NP 830 and NP 891 were found to be different. It is assumed that these genes come from either Motia (Triticum durum) or Khapli (T. dicoccum) in NP 830 and from Gaza (T. durum) in NP 891.