Fig. 1From: Cryopreservation of vegetative cells and zygotes of the multicellular volvocine green alga Gonium pectoraleLife cycle of Gonium pectorale. A Diagram of life cycle showing facultative sexual reproduction and heterothallic mating system. Based on Nozaki & Ito [21] and the present study. B Vegetative colonies of NIES-4502. C Mature zygotes ready for germination (NIES-4501 × NIES-4502). D Successive stages of zygote germination showing release of a four-celled germ colony. All at same magnification. E Empty zygote walls after germination (NIES-4501 × NIES-4502)Back to article page