Correlation between Inflorescence Phenological Events of Mango (Mangifera indica cv. Kent) and Some Climatic Parameters in Côte d'Ivoire

Abstract

Aims: It was aimed to investigate the relationship between two climatic parameters, temperature and relative humidity, and the flower-cutting interval of mangoes tree cv. Kent Study Design:  The experimental design used was the completely randomized design with triplicate. Place and Duration of Study: The present research was developed in the Laboratoire de Biologie et Amélioration  des Productions Végétales, UFR Sciences de la Nature, Université Nangui Abrogoua, Côte d’Ivoire and  in the Centre National de recherche Agronomique, Station de recherche  de Lataha (Lavononkaha), Korhogo, Côte d’Ivoire, between December 2015 to January 2018. Methodology: One hundred (100) mango trees were chosen to constitute four blocks of mango trees cv Kent. Every three days, the phenological events were notified. Regular observations were performed to determine the time between the phenological events of the inflorescence. Thus, the inflorescence appearance and the first flower opening, the time between the first flower opening and the first fructification, in relation with temperature and relative humidity were determined. Results: It was not observed a negative correlation between temperature, time of inflorescence appearance and the first flower opening. Moreover, the relative humidity revealed a positive correlation with this time. In addition, the time elapsing between the first flower opening and the first fruiting is negatively correlated with temperature but positively with relative humidity. Conclusion: Negative correlation between the time elapsing from the inflorescence appearance and the first flower opening as well as the temperature. Furthermore, a positive correlation between was revealed between the inflorescence appearance and the first flower opening as well as the relative humidity. Similarly, for the elapses delay between the first flower opening and the temperature. In addition, correlation observed between fruiting time and relative humidity was positive.