Ezzat Abd El Lateef
National Research Centre, Egypt
Title: Climate change mitigation of mungbean (Vigna radiate L. Wilczek) under Mediterranean climate
Biography
Biography: Ezzat Abd El Lateef
Abstract
In order to determine the impact of heat stress effects as the most climate factors on mungbean varieties field trials were conducted and Kawmy-1 and V 2010 varieties were subjected to extreme heat stress conditions created through sowing mungbean at 5 dates every two weeks namely, 15/5 (D1), 1/6 (D2), 15/6 (D3), 1/7 (D4) and 15/7 (D5). The results showed that both varieties were variable in their tolerance to climate effects changes. The yield reduction percentage was nearly doubled for Kawmy-1 when the minimum temperature rose by 1 oC, meanwhile and reached 3 folds when the maximum temperature raised by 1 oC. Heat stress indices showed lower values as heat regimes retarded. In general, Kawmy-1 was superior in seed yield/ha when it was sown either in D1 (15/5) or D2 (1/6) followed by V 2010 when it was planted at D1. There was a gradual increase in the mean minimum or maximum temperatures over D1 planting date as planting dates advanced, mean temperatures increased by 2.5-8 oC and 4.5-11 oC for the minimum and maximum temperatures for D2-D5 as compared with the best planting date D1. Photo-thermal unit (degree-days hours) PTU accumulated for mungbean indicate that it is among the most temperature sensitive crops and production could fluctuate with a slight change in temperature which could be observed from the lower yields exposed to heat stress in the later planting dates compared with optimum planting date D1. Mitigation of climate change could be attained through choosing the more tolerant varieties to heat stress and avoiding exposing mungbean to retarded heat stresses.