2.1. Plant materials and growth conditions
Dehusked rice seeds of the HL-CMS line (YtA) or Nipponbare
were sterilized in 75% ethanol for 30 s, then in 0.15% Hgcl2 for
15 min. Finally, the seeds were washed with sterile water and
sown on ½ MS medium to germinate. The rice plants were grown
in the dark at 28 C for 2 weeks.