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上海市农科院作物所,应用软 X 射线辐射诱变,选育出晚香粳新品系—SX0832,经多点试验证明,具有融香味、优质、高产、多抗为一体的优点。一、选育经过1983年选用亲本品种“武香203”(由江苏武进引入),种子萌芽期(室温下浸种2天,催芽1天),经10000R 的 Mo 靶、35KV 电压所产生的软 X 射线处理(波长范围:特征波长0.62～0.71(?)、连续波长最短0.35(?))。X_1～X_3代混合播种,至 X_3代(1985年)收获期进行一次性单株选择,1986年进行单株(系)种植,系谱号为 SX 85 203 X_3-92,田间号为 SX86-363,小区单行种植6×12=72株,当年秋收2斤种子,冬季送海南岛三亚市进行冬繁,即为 X_5代,
Shanghai Academy of Agricultural Sciences Crops, the application of soft X-ray radiation mutagenesis, breeding a new late Japonica line-SX0832, the multi-point test proved that with aromatic flavor, high quality, high yield, multi-resistance as one of the advantages. First, the selection After the selection of the parental variety “Wuxiang 203” (introduced from Jiangsu Wujin) in 1983, seed germination period (soaking 2 days at room temperature, sprouting one day), the soft target generated by the 10000R Mo target, 35KV voltage Ray treatment (wavelength range: characteristic wavelength 0.62 ~ 0.71 (?), The shortest continuous wave length 0.35 (?)). X_1 ~ X_3 were mixed and sowed. Single-plant selection was made at the harvesting stage of the generation X_3 (1985). The single plant was planted in 1986 with the pedigree No. SX 85 203 X_3-92 and the field No. SX86-363. Cell single-line planting 6 × 12 = 72 strains, when the harvest of 2 kg of seeds in winter to send Sanya City, Hainan Island for winter Fan, that is X_5 generation,