TY - JOUR AV - restricted A1 - Indira, S A1 - Rana, B S A1 - Reddy , B B A1 - Rao , N G P TI - Stability of host plant resistance to sorghum charcoal rot UR - http://oar.icrisat.org/5575/ JF - Indian Phytopathology SN - 0367-973X PB - Indian Phytopathological Society N2 - The 29 entries, including elite hybrids, cultivars, parents and resistant stocks, were evaluated for resistance to Macrophomina phaseolina in 4 environments covering rabi and kharif seasons. Artificial epiphytotic conditions were created by the tooth-pick method. Despite significant genotype × environment interactions varietal differences persisted. There was no host immunity but SPV-34, CSH-9 and 36B among the improved lines developed at the All-India Coordinated Sorghum Improvement Project and 6-39, 8-55 and SC 120-14 among the basic stocks were highly resistant. CSH-9, 36B and 6-39 were av. and 8-55 and SC 120-14 were above av. in stability of disease resistance. The seasonal change in host plant resistance of some of the cultivars appears due to their photoperiodic sensitivity KW - Stability of host resistance KW - sorghum charcoal rot KW - Macrophomina phaseolina Y1 - 1983/// SP - 473 ID - icrisat5575 EP - 479 VL - 36 IS - 3 ER -