| Autor: |
Adiba, Atman, Hejazi, Ziaurrahman, Kouighat, Mohamed, El Fallah, Kamal, Bouchyoua, Abdelghani, Hamdani, Anas, Charafi, Jamal |
| Zdroj: |
Plant Physiology Reports; September 2024, Vol. 29 Issue: 3 p499-513, 15p |
| Abstrakt: |
Several research studies have revealed the potential of pomegranate (Punica granatumL.) as a viable alternative in addressing the impacts of climate change on the geographical distribution of fruit trees within semi-arid regions. Nevertheless, the pomegranate adaptation in these areas was influenced by many factors, such as the chilling requirements and the genotype-specific responses. In this research, the geographical distribution of the pomegranate under Moroccan conditions was studied using the Maxent model based on collected presence data of the GBIF database combined with bioclimatic variables available in WorldClim. Thus, the adaptability of two Moroccan cultivars (‘Sefri’ and ‘Marsi’) and an American variety ‘Wonderful’ under two contrasting climates was evaluated. The first is the ‘Ain Taoujdate’ station with a warm climate (control) and the second is the ‘Anouceur’ station with low-temperature conditions. The results revealed the area under the receiver operating curve (AUC) produced by the maximum entropy (Maxent) under various bioclimatic conditions was greater than 0.96, indicating excellent model accuracy. The precipitation, elevation, and mean temperature of the warmest quarter were the environmental variables that influenced the pomegranate distribution. However, in the experimental part, the results induced a significant reduction of the fruit yield in the first experimental year under the coldest conditions with an average of 35% (‘Wonderful’), 37% (‘Sefri’) and 57% (‘Marsi’). Biochemically, the effect of the low-temperature conditions on the pomegranate orchard was reported by a significant decrease in the juice phenolic compounds, anthocyanins content and antioxidant activity in the three cultivars tested. These findings highlight the opportunity to harness variations in low-temperature tolerance within breeding initiatives and selecting pomegranate cultivars. |
| Databáze: |
Supplemental Index |
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