Thirty eight exotic chickpea genotypes from ICARDA were evaluated with the
commercial cultivar Giza-3 for seed yield and some of its components during two
growlng seasons (2002/03-2003/04) at Maryout and EI-Maghara Research Stations,
Desert Research Center under five environmental conditions (Env.1, Env.2, Env.3,
Env.a and Env.s). The first and second ones were under dry methods by using
irrigation at sowing date only in addition to the seasonal rainfall during both growing
seasons, whereas the third, one was carried out at the second season (2003/04) by
irrigated after 45 days from sowing date in addition to the seasonal rainfall at Maryout
Research Station. The fourth and fifth ones were carried out at EI-Maghara Research
Station, under drip irrigation at all 6 days interval for one hour.
The results indicated that there was a wide range of variability on yield and
yield components between the two locations with high genotypic differences .In
addition to the genotype x environment interaction was significant and a major portion
of such was accounted by the deviation from linear response. Seed yield and some of
its components influenced by the supplemental irrigation after 45 days from sowing
date. High values of these traits were obtained when chickpea plants were irrigated
once again after 45 days from sowing at Maryout Research Station in the second
season. This out yielded by 32.41% and 48.21% for seed yield per plant compared
with Env.1 and Env.2.
Inaddition, genotypes No. 27 followed by No.7, 17 and 16 had the highest
mean values for seed yield. Moreover, genotypes No. 27, 11, 31 and 29 recorded the
highest mean values for number of seeds 1 plant as compared with the other
genotypes either exotic or local one (Giza- 3).
Stability studies revealed that genotypes No. 17 was more stable for seed
yield 1 plant on the basis of (bi) and (S2di) which did not differ significantly from unity
and zero, respectively and ranked third for seed yield compared with the other
genotypes, also, it gave a suitable number of seeds 1 plant. From such studies it could
be concluded that, genotype no. 17 consider the best genotype because it's more
stable under five different environmental conditions.