关键词: 两系法 亚种间杂交稻 株型生理育种

Abstract:

Using strong heterosis of intersubspcific hybrids was a main approach to increase rice yield, and two-line method was helpful to utilize such hybrids.By the complementarily of grain quality between indica and iaponica type, rice hybrid combinations with good eating quality in favor of various people habit would be obtained. By the plant temperature forecasting system for the sterile alteration, and through a safeguarding technology by water irrigation to regulate plant temperature, two-line hybrid seed production system would become stable and safe. In rice breeding, plant type methodology should be improved with digital technology, and physiology breeding was considered by a series of physiological indices to estimate the suitability of hybrids to various ecological conditions, for improving the traditional breeding method and saving estimate years.

Key words: two-line method, intersubspcific hybrid, plant type and physiological breeding