One picture to understand the substantive derivatives system

科技日报记者 马爱平<br> （农业农村部种业管理司、农业农村部科技发展中心供图）5061802026-04-22 12:59:15:325马爱平一图读懂实质性派生品种制度1324滚动滚动<br> https://www.stdaily.com/web/gdxw/pic/2026-04/22/506180_t1_0X0X30X17_d3bdc28d-2ccd-4d5d-85e3-438c81e92d35.jpg<br> https://www.stdaily.com/web/gdxw/pic/2026-04/22/506180_t1_0X0X30X17_d3bdc28d-2ccd-4d5d-85e3-438c81e92d35.jpg<br> https://www.stdaily.com/web/gdxw/pic/2026-04/22/506180_t1_0X0X30X17_d3bdc28d-2ccd-4d5d-85e3-438c81e92d35.jpg<br> https://www.stdaily.com/web/gdxw/pic/2026-04/22/506180_t1_0X0X30X17_d3bdc28d-2ccd-4d5d-85e3-438c81e92d35.jpghttps://www.stdaily.com/web/gdxw/2026-04/22/content_506180.htmlnull科技日报101/enpproperty-->