ICRISAT Archival Report 2006 - The seedlings of success in the ...

International Ascochyta blight nursery (IABN): Thirty- nine AB promising entries and one susceptible check
were included in IABN and evaluated under field conditions at two locations (Islamabad and Attok) in Pakistan, and
five locations (Dhaulakuan, Gurdaspur, Ludhiana, Hisar, and Patancheru) in India. Each entry was planted in two
replications with one row of 2 - 4 m long. Artificial inoculation with conidial suspension was done at flowering and
pod initiation stages of the crop at all the locations. The IABN was evaluated under controlled environment
conditions at ICRISAT following standardized evaluation technique. Data were received from all the five Indian
locations, but not from Pakistan. Susceptible cultivar Pb 7 showed a susceptible reaction at all the five locations in
India. Eight lines; ICC 1069, ICC 1400, ICC 12952, ICC 15978, ICC 1700, ICCX 810800, ICCX 900221-31-PABR,
and ICCX 910028-46 PABR-BP-1PABR-L were showed resistant (1.1 to 3 rating on 1 - 9 rating scale) to
moderately resistant (3.1 to 5 rating) reaction to AB at all the five locations in India. ICC 4991 and ICC 14344 were
found to be susceptible at all the five locations.
International Botrytis gray mold nursery (IBGMN): The IBGMN consisted of 30 entries (29 moderately
resistant and one susceptible check), and was evaluated under field conditions at two locations in Nepal (Rampur
and Tarahara), two locations in Bangladesh (Ishrudi and Jessore), and four locations in India (Pantnagar, Gurdaspur,
Ludhiana, and ICRISAT-Patancheru). At ICRISAT- Patancheru, the nursery was evaluated under controlled
environment conditions. All the entries were artificially inoculated with conidial suspension of the local isolate at
the flowering and pod initiation stages of the crop at all the locations, except at Tarahara, Nepal; where the nursery
was evaluated under natural epiphytotic conditions. Data was received from Ludhiana, Pantnagar, and ICRISAT-
Patancheru. Susceptible cultivar showed a highly susceptible reaction at all the three locations. ICC 1069 and ICCX
850498-3PN-17H-BH-BH in three locations; and ICC 12512, ICC 12952, ICC 14344, ICC 14559, ICC 14824,
ICCV 89302, ICCV 89303, ICCV 98505, ICCL 86242, ICCL 87322, and ICCX 860029-BH-1PN-BPN-B in two
locations (ICRISAT, Patancheru and Pantnagar) were found to be moderately resistant (3.1 to 5 rating on a 1 - 9
rating sale).
Suresh Pande and NARS Collaborators
Milestone: 5 - 10 new sources of resistance to AB and BGM identified (SP/PMG) 2009
Identification of new sources of resistance to Ascochyta blight (AB) in advanced breeding and germplasm
lines: One hundred and ninety seven AB promising advanced breeding and germplasm selections (36 ICRISAT bred
lines, 23 germplasm lines, 42 lines from ICARDA, and 96 lines from Australia) were evaluated for AB resistance
under controlled environment conditions. Eighty-five lines (18 ICRISAT bred lines, 7 germplasm lines, 24
ICARDA lines, and 36 lines from Australia) were found to be moderately resistant (3.1 to 5 rating on 1 - 9 scale) to
AB. Susceptible cultivar Pb 7 showed had a damage rating of 9.0.
Suresh Pande and PM Gaur
ICAR-ICRISAT collaborative research on AB resistance: In collaboration with Indian Institute of Pulses
Research (IIPR), Kanpur, 171 lines (101 IVT entries, 27 AVT entries, 20 entries form AB nursery, and 23 from
BGM nursery) were evaluated for AB resistance under controlled environment conditions. Among the IVTs, IGLS
9, IGEB 6 and IGEB 7 were moderately resistant to AB (