I - --ii

Entry
Table 5
Average reaction of cultivars and mixture of cultivars (MC)
to ascochyta blight in Advanced Yield Trial at Tel Had,a, 1980-81.
Blight reaction on 1-9 scale
Plant basis' Plot basis 2
ILC 482
4.07 3.00
ILC 484 4.03 3.50
ILC 249 7.11 7.00
Mean
5.07
4.50
MCI 5.38 5.00
ILC 72
3.76 3.25
ILC 202
4.65 4.75
ILC 3279 3.55 3.00
Mean 3.99 3.67
MC2 3.40 3.00
ILC 191 4.05 4.25
ILC 194
3.23 3.25
ILC 201 4.43 5.00
Mean 3.90 4.17
MC3 3.75 4.25
I. Average reaction of four replications on 20 randomly selected plants per replication.
2. Average reaction of four replications.
Development of Resistant Desi Cultivars -
International Cooperation
105
The breeding program at ICARDA concentrates on the kabuli chickpeas cultivated
in West Asia and North Africa, whereas ICRISAT deals with desi chickpeas
cultivated in Pakistan and countries eastward. In 1978-79 and 1979-80 the
crop in Pakistan was devastated by ascochyta blight, and in an attempt to
overcome this serious problem, ICARDA and ICRISAT are developing a joint
project.
ICRISAT will make crosses and produce F2 populations. Part of the F2 seed
will be grown at Hissar (India) for single-plant selection. The following season a
part of seed of each F3/F4 (if the F3 is advanced in the off-season) progeny will
be grown and assessed at Tel Hadya for resistance to blight and the remaining
seed will be grown at Hissar to assess yield and adaptation. Progenies found both
blight resistant at Tel Hadya and high yielding at Hissar will be retained. This
process will continue for at least two cycles. The resistant and superior yielding