论文部分内容阅读
低温危害是造成上海郊区后季稻减产的主要原因之一。因此,重视选育和推广耐寒性强的品种,实现粮食稳产高产具有重大意义。我所选育的中熟晚粳新品种寒丰(即6366),经1980、1981年的自然低温鉴定和人工低温鉴定,初步表明具有耐寒的特性。对此,我们又进一步对寒丰在花粉母细胞减数分裂期、抽穗开花期、灌浆结实期的耐寒性进行系统的鉴定,为大面积推广提供更充分的依据。一、材料和方法供试品种为寒丰、双丰一号(上海市种
Low temperature damage is one of the main reasons for the decline of the latter quarter rice in the suburbs of Shanghai. Therefore, it is of great significance to attach importance to breeding and popularizing varieties with high cold tolerance and achieving stable and high yield of grain. My selection of late maturity cultivar Hanfeng abundance (ie, 6366), the 1980 and 1981 natural low temperature identification and artificial low temperature identification, initially showed a cold hardy characteristics. In response, we further systematically identified the cold tolerance of Hanfeng in the meiosis, flowering and flowering stages of pollen mother cells and the grain filling and grain-filling stages, which provide a more adequate basis for the promotion of large-scale popularization. First, materials and methods for the test varieties for the cold Feng, Shuangfeng on the 1st (Shanghai species