论文部分内容阅读
我国主要麦区的品种演变,表现有株高逐步降低,粒重逐步增大的趋势。为了摸索培育大粒型与重穗型品种的途径和方法,合理选配亲本和处理杂种后代,我们于1979—82年研究了小麦杂种F_1—F_3代粒重的遗传特点。材料和方法试验在本校育种基地进行,地力800斤左右。选用千粒重不同等级的原始材料(40克以下为小粒,40.1—50克为中粒,50.1克以上为大粒),配置了小×中、小×大、中×中、中×大、大×大及其反交9类组合。各代均按行距25厘米,株距10厘米点播。F_1、F_2每组合旁种亲本各40株,未设重复。F_1按组合混收,测穗粒重、穗粒数、千粒重。F_2每组合
The evolution of the varieties of major cereal areas in our country showed the trend of gradually decreasing plant height and increasing grain weight gradually. In order to explore ways and means of cultivating large and heavy panicle varieties, rationally matching parents and handling hybrid offspring, we studied the genetic characteristics of grain weight of F_1-F_3 generations in wheat hybrid in 1979-82. Materials and methods of test in our school breeding base, ground force of about 800 pounds. Use different weight of 1000 grain weight of the original material (40 grams of the following small particles, 40.1-50 grams for the tablets, 50.1 grams or more for the large particles), equipped with small × medium × small × large × medium × large × large And its anti-cross nine categories. All generations are 25 cm by row spacing, spacing of 10 cm on-demand. F_1, F_2 each side by hybrid parent each 40 strains, no duplication. F_1 According to the combination of collection, measured grain weight, grain number per spike, grain weight. F_2 for each combination