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

Of the 28 entries tested, 27 entries at Berhampur, 26 at Bangalore, 25 at Sehore, 24 at Akola, 23 each at Badnapur,
ICRISAT, Patancheru, and Pudukottai, and 75% SM incidence at Bangalore, Badnapur, ICRISAT, Patancheru, and Rahuri; while it was
moderate (31%) at Pudukottai, and low (10%) at Coimbatore. The SM was completely absent at Berhampur,
Hazaribagh, and Sehore. Incidence of SM in local susceptible check was highest at Bangalore (100%), Badnapur
(65%), ICRISAT-Patancheru (100%), and Rahuri (100%); moderate at Coimbatore (45%) and Pudukottai (46%),
and low at Berhampore (4%). The differential reaction of susceptible checks at different locations indicated the
possible presence/existence of races/pathotypes in the SM pathogen.
ICPL 99044 showed resistance at seven locations. Ten entries, ICPL 7870, ICPL 8610, ICPL 9576, ICPL 12957,
ICPL 12759, ICPL 94062, KPBR 80-2-1, KPBR 80-2-2-1, V 71A, and V71B at six locations, 12 entries at five
locations, and five lines at four locations were resistant.
Suresh Pande and Collaborators
Milestone: About 100 germplasm/advanced breeding lines screened for wilt and sterility mosaic disease resistance
using different isolates and characterized for agronomic traits (SP 2009)
Fusarium wilt and SM resistance in advanced germplasm lines: Fifty-six lines (eight lines from advanced
selections in 2003/04, four from advanced selections in 2004/05, and 44 selections from breeders material in 2005-
06) were evaluated for combined resistance to FW and SM under artificial epiphytotic conditions at ICRISAT-
Patancheru. Additionally, data on natural incidence of Phytophthora blight (PB), which occurred during the current
season due to heavy rains in the months of July and August, were also recorded.
Both FW and SM susceptible cultivars showed >85% disease incidence. Of the eight advanced selections, six lines
(BDN 2010, BSMR 846, MAL 3, PT 1037, PT 2033, and PT 2035) had a combined resistance (< 10%) to both FW
and SM. Additionally, all these six lines had a very low (~ 1%) natural incidence of PB, and PT 1037 was free from
FW. KPL 96053 and MA-S-DEO-74 were asymptomatic to both FW and SM, MAL 13 and MAL 23 were resistant
to both diseases. These lines were also resistant to PB.
Among the 44 promising breeding lines tested, ICPL 20098, ICPL 20106, ICPL20116, and ICP 11376-5 were
asymptomatic, and 26 lines resistant to both FW and SM. Additionally, eight lines were asymptomatic and 25 were
resistant (