How to Tackle Insecurity Problems in Seed Production of Two-line Hybrid Rice
The security problem of seed production has seriously hampered the healthy and sustainable development of two-line hybrid rice.The safty issues on seed production of two-line hybrid rice and current research situation were pointed out in this paper.The three main reasons for unsafty in seed production of two-line hybrid rice were indicated to be unsuitable site selection,high critical sterility-inducing temperature and the driftof critical temperature.In this paper,strategies and measures were put forward based on many years of practice.Selecting dual-purpose genie male sterile line with lower critical sterility-inducing temperature could minimize the risk in seed pruduction of two-line hybrid rice and scientifically selecting a suitable site and safe duration could ensure the seed production safety of two-line hybrid rice.A new idea for determining appropriate regions and periods for seed production according to the climate data together with climatic demands of the "three safe-periods" in seed production was proposed.Besides,a system of single plant selection and identification and original seed propagation with cyclic cold water was established.foundation seed production of dual-purpose genic male sterile lines should be adopted to avoid the drift of critical sterility-inducing temperature.
Two-line hybrid riceDual-purpose genic male sterile lineSeed production safety
国家科技期刊平台
NSTL
万方数据
维普
