Fig. 1From: Cross-talk between transcriptome, phytohormone and HD-ZIP gene family analysis illuminates the molecular mechanism underlying fruitlet abscission in sweet cherry (Prunus avium L)The pollen vigor under the optical microscope and structure under the scanning electron microscope. (a) Pollen tube germination of Qianying No. 1; (b) Pollen tube germination of Brooks; (c) Electron microscopic structure of pollen of Qianying No. 1; (d) Electron microscopic structure of pollen of Brooks; (e) Electron microscopic structure of normal pollen; (f) Electron microscopic structure of deformity pollen. Pg: pollen grain; Pt: pollen tube; Ap: abortion pollen; Np: normal pollenBack to article page