Effect of salinity level of irrigation water on cowpea (Vigna Unguiculata) growth

Salih, Hemn Othman

doi:10.9790/2380-0633741

Cited by 1 publication

(1 citation statement)

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“…The present study revealed that RGR reduced with the increases of salinity level, but the magnitudes of reduction were not the same for all studied cowpea genotypes (Figure 1a; Table 1). These results are in accordance with the results of Joshi and Nimbalkar (1983), Salih and Kia (2013) and Mannan et al (2010). Salt‐stress might induce to either decrease in cell elongation resulting from the inhibiting effects of water shortage on growth promoting hormones which, in turn, lead to a decrease in each of cell turgor, cell volume and eventually cell growth (Bañon, Ochoa, Franco, Alarcón, & Sánchez‐Blanco, 2006).…”

Section: Discussionsupporting

confidence: 93%

Dissecting the salt tolerance potential of cowpea genotypes based on morpho‐physiology and yield‐related attributes

Mahmud

Akter

Siddiqui

et al. 2021

Annals of Applied Biology

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High salinity is a critical environmental menace hampering crop growth and productivity worldwide. Therefore, dissecting the salt tolerance potentials and identifying resilient genotypes are crucial to secure sustainable crop production. In this study, we explored the salt resistance potentials of three advanced cowpea lines including one check variety exposed to different salinity levels (0, 50 and 100 mM of natural saline water) by quantifying their growth, physiology and yield‐related attributes. Our results implied that salt‐stress resulted in a significant reduction in the morphological, physiological and yield attributes at both 40 and 60 days after sowing when compared to non‐stress plants. Interestingly, we noticed that one of the latest cowpea genotypes (BU‐C‐Acc‐3) sustained better performances in terms of growth, physiology and yield‐related characters at both 50 and 100 mM salt treatments, while other genotypes exhibited varying levels of salt responses. Further, a multivariate analysis showcased that genotype ‘BU‐C‐Acc‐3’ acquired a combination of physiological and yield contributing responses that ultimately induced a higher level of resistance and grain yield. Collectively, our study offers some contrasting genotypes which could be incorporated in current cowpea breeding programmes to improve grain yield and salt tolerance using conventional as well as molecular breeding tools.

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