Silver nanoparticles: a positive factor for in vitro fowering and fruiting of purple passion fruit (Passifora edulis Sim f. edulis) - Truong Hoai Phong· Tran Hieu· Hoang Thanh Tung· Nguyen Thi Nhu Mai· Hoang Dac Khai· Do Manh Cuong· Vu Quoc Luan (2023)