不同成熟度粳型巨胚稻籽粒萌发和抗穗发芽能力初探

为了了解不同成熟度粳型巨胚稻籽粒能力和抗穗发芽能力,以西巨胚1号为材料,当地生产用的合系22-2作对照,在开花后的不同天数取其籽粒和穗子进行发芽试验。结果表明：西巨胚1号籽粒灌浆不足21d的不具发芽能力,成熟的种子也只有53.7%具发芽能力,种子萌发的时间比合系22-2迟48h左右,且没有明显的发芽高峰;抗穗发芽能力比合系22-2强。

Study on the Germination and the Ability of Preharvest Sprouting Resistance of Different Mature Degrees of Japonica Giant Embryo Rice Seeds

In order to study the germination and the ability of preharvest sprouting resistance of different mature degrees of Japonica giant embryo rice seeds, the seed and panicle germination experiment of different days after flowering of Japonica Xi-giant embryo-1 was conducted, the local variety of japonica rice Hexi-22-2 as control. The results indicated that the seeds can not germinate when the days of grain filling was less than 21 days, and the germination ability of mature seeds was 53.7%, the germination time of Japonica Xi-giant embryo -1 was 48h later than that of Hexi-22-2, and the process of germination had no obvious peak. The ability of preharvest sprouting resistance of Japonica Xi- giant embryo -1 was stronger than Hexi-22-2.