Year: 2004
Type: article
Abstract: Twenty-nine chickpea germplasm accessions and 10 cultivars were screened for resistance to dry root rot, caused by R. bataticola [Macrophomina phaseolina]. Eight advanced breeding lines that were identified during trials at ICRISAT to have field resistance (<20% plants infected) either to wilt, dry root rot or collar rot (Sclerotium rolfsii [Corticium rolfsii]) were also evaluated, to confirm their resistance to dry root rot. Artificially inoculated 8-day-old seedlings were incubated at 35°C with 12 h photoperiod. The dry root rot was scored on a 1-9 rating scale on the 8th day after inoculation. Based on the disease score (DS), the accessions were grouped as immune (DS=1), resistant (DS>1 and ≤3), moderately resistant (DS>3 and ≤5), susceptible (DS>5 and ≤7) and highly susceptible (DS>7). Of the 47 lines, none was immune to dry root rot. One germplasm accession (ICC 14395), a cultivar (ICCV 2) and an advanced breeding line (ICCX830203-BH-BH-11H) were resistant to dry root rot. Of the remaining lines, 22 were moderately resistant, 19 susceptible and 3 highly susceptible. The disease severity in the 2 susceptible lines (BG 212 and ICC 12267) used as the controls was rated 9.
Authors: S Pande, G. Krishna Kishore, J N Rao
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W34748715