pure line selection

The results of pure line selection , different sowing dates and different fertilizer experiments indicated that the character of glume gaping resistance in rice varieties is stable and heritable , and the environmental factors have no effects on its expression .

纯系选择试验、不同播期试验及不同氮肥施用水平试验的结果表明，水稻品种（系）抗裂颖性状是稳定的可遗传性状，其表达不受环境因素影响。