As a result of the rapid increase in the world population, the problem of balanced and adequate nutrition has emerged, and the importance of animal production has increased even more. In this respect, to ensure sufficient and balanced nutrition of existing animals, there is a need to increase the cultivation areas of fodder crops and proper management of pastures and breeding studies. For this reason, fodder pea (Pisum sativum L.), which has high nutritional value and is preferred for animal consumption, is a vital fodder plant to meet this need. Fodder peas are suitable for consumption as animal feed because they contain high levels of carbohydrates and digestible substances. However, salinity, one of the abiotic stress factors, is an essential problem for fodder peas. Salinity significantly limits the development of the plant and leads to yield losses. Although the consequences of climate change vary in many parts of the world, it is predicted that the frequency and severity of conditions such as decreased precipitation, increased temperatures, floods, droughts, and increased saline areas will increase with climate change in developing countries. In addition, salt stress also affects the photosynthetic mechanism in plants and causes changes in chlorophyll, carotenoid, phenolic, and antioxidant concentrations. Since the reclamation of saline farmland is expensive and complex, it is more appropriate to grow salinity-resistant plants. Therefore, gene studies to improve the salinity tolerance of plants have gained momentum in recent years. In this review, studies conducted in the last 20 years are discussed. Salt tolerance in gene-transferred and non-transferred peas, as well as plant growth in a saline environment, were assessed by comparing proline, chlorophyll, total phenolic, and antioxidant levels. In summary, this study seeks to highlight the issues of drought, aridity, and salinity, all of which are expected to worsen as climate change progresses.
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