论文部分内容阅读
80年代以来,采用不同诱变技术选育出200多个稳定株系,经筛选、鉴定、综合评议选育出40多个优良新品系。辐射与杂交相结合选育的稳定株系占总株系的45.6%;辐照干种子的选育效果恒定,稳定株系及优良新品系所占比率均达11%以上;辐照干种子、花粉以及辐射与植物细胞组织培养相结合,三代即可选育出一定数量的稳定株系。从稳定株系优异性状的选择看出;辐照干种子、辐射与杂交相结合以及辐照花粉、合子等对于提早抽穗、改良熟性作用较大;幼胚离体培养与辐照诱变相结合利于选择大穗、大粒型材料。
Since the 1980s, more than 200 stable strains have been bred by different mutagenesis techniques. Over 40 excellent new lines have been bred, screened, and comprehensively appraised. The combination of radiation and hybridization of stable strains accounted for 45.6% of the total strains; irradiation of dry seeds breeding effect is constant, stable strains and excellent new lines accounted for more than 11% of the proportion of radiation; dry Seeds, pollen, and radiation are combined with plant cell tissue culture to produce a number of stable lines in three generations. From the selection of excellent traits of stable lines, we can see that irradiation of dry seeds, combination of radiation and hybridization, and irradiation of pollen and zygotic have a greater effect on early heading and improving the maturity. In vitro culture of immature embryos and irradiation induced phase Combined with the choice of large spike, large grain material.