TOLERANCE INDICES AND BIOCHEMICAL VARIATIONS OF SOME FABA BEAN CULTIVARS UNDER WATER DEFICIT STRESS

Esmaiel, Eman M.R.; ElSarag, Eman I.; Abdrabbo, Mohamed A.A.; Mohamed, Moatazallah A.; Badran, Ayman E.E.

doi:10.21608/sinjas.2024.241348.1236

TOLERANCE INDICES AND BIOCHEMICAL VARIATIONS OF SOME FABA BEAN CULTIVARS UNDER WATER DEFICIT STRESS

Document Type : Researches

Authors

¹ Central Laboratory for Agricultural Research, Egypt.

² Dept. Plant Prod., Fac. Environ. Agric. Sci., Arish Univ., Egypt.

³ Central Laboratory for Agricultural Climate, Agricultural Research Center- Cairo- Egypt

⁴ Dept. Genetic resources, Desert Research Center, Egypt.

10.21608/sinjas.2024.241348.1236

Abstract

The field experiment was carried out at agriculture research station of Al-Arish, North Sinai, Egypt during two growing seasons (2020/2021 and 2021/2022). Three Vicia faba L. cultivars (Sakha2, Nubarya1 and Maryot2) were evaluated under water stress levels (severe stress (50%), moderate stress (75%) and without water stress (100%) from evapotranspiration to study tolerance indices and biochemical traits. Total seed yield increased by the increasing of water level. The higher the level of irrigation the more efficient it is in crop yield. The reduction in yield/feddan was in linear with the increase of water deficit stress. Maryot2 cultivar exceeded the other cultivars in number of pods and total seed yield. On the other hand, the lowest values of such parameters were achieved by Sakha2 cultivar in the same conditions while it recorded the highest values in 100 seeds weight parameter. The interaction effect between water deficit stress and cultivar was significant on seed yield of faba bean. Water deficit stress significantly decreased seed yield with the three cultivars. Stress tolerance indices were investigated in order to evaluate faba bean cultivars under water stress conditions. Drought tolerance index (DTI) selected Maryot2 as the most relatively tolerant cultivar according to total seed yield/feddan (0.87 and 0.88) in both seasons respectively while Sakha2 cultivar recorded the lowest relative tolerance values (0.75 and 0.75) during the growing seasons. Based on yield injury (%), .

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