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Sudan Journal of Agricultural Research
Evaluation of eleven faba bean (Vicia faba L.) genotypes under four water regimes
Gamal E.Khalifa
Abstract:
Eleven faba bean genotypes were evaluated under four water regimes at
Hudeiba Research Station Farm during 96/97 and 97/98 seasons. The water
regimes were: watering every 10 days throughout the growing season (D0);
watering every 10 days during the vegetative stage and 20 days during the
reproductive stage (D1); watering every 20 days during the vegetative stage
and 10 days during the reproductive stage (D2) and watering every 20 days
throughout the growing season (D3). The results showed that the average
number of days to 50% flowering and 90% maturity were significantly
decreased when irrigation was applied at 20 day intervals throughout the
growth period of the crop. Seed weights of the tested genotypes were also
affected by moisture stress, C.86 being the best seed yielder as it gave
more than 57 g during both seasons of the study. The reproductive stage
appeared to be the most critical as seed yield of faba bean genotypes was
greatly reduced when stressed during this stage. The genotype C.34/1/1/1
showed a good performance and seemed to be tolerant to water stress during
the reproductive stage as was clear when tested under D1 water regime.
However, the seed yield obtained from this genotype when stressed during its
vegetative growth, only exceeded the seed yield obtained under normal
conditions of irrigation. The released cultivar Basabeer (BB7) showed
approximately the same percent seed yield reduction when stressed at D1
during both seasons. When stressed throughout the growing season (D3), Daba
1/1 showed the lowest percent seed yield reduction of 20% and 14 % during
the first and second season respectively. All genotypes showed better seed
yield with normal irrigation during the reproductive stage. However, most of
them exhibited higher percent seed yield reduction (21% - 43.1 %) when
stressed during the reproductive stage.
Sudan Journal of Agricultural Research Vol. 11 (2008) PP. 17-24
