论文部分内容阅读
在河南卢氏油松种子园对 4 6个无性系结实初期和结实盛期开花物候作了观测。结果表明 ,一般雌球花可授期比雄球花散粉期来得早 ,持续时间长 ,散粉期含在可授期内 ;散粉期和可授期同步性较好 ;在不同年份开花始期前后相差 2～ 3d,开花始期早晚与当年≥ 10℃的活动积温有关。由于受花期温度和降雨等因素的影响 ,不同年份花期长短可相差 10 d左右 ,但不存在花期不遇 ;不同无性系在开花物候上存在很大差异 ,但在不同年份各无性系在始花时间上序次则相对稳定 ,无性系内分株间开花物候仅有 1～ 2 d的差异 ;位于树冠北向的雌雄球花各日期在开花频率上与其它 3个方位有较大差异 ,始花期推后 1d左右。此外 ,还研究了开花物候对同步指数的影响 ,以及不同物候类型授粉效率的差异
The observation of flowering phenology at early and vigorous stages of 46 clones in Pinus tabulaeformis seed orchard in Henan was observed. The results showed that the female pollen germination period could be earlier than that of the male pollen dispersal period, and the duration of the powder pollination period was longer than that of the male pollination period. The synchronicity of the powder pollination period and the acceptable period was better. Before and after the flowering period of different years 2 ~ 3d, sooner or later the beginning of flowering and the current ≥ 10 ℃ activity accumulated temperature. Due to the influence of flowering temperature and rainfall, the flowering period of different years can differ by about 10 days, but there is no flowering occasion; there are great differences in the flowering phenology of different clones, but in different years, The order of flowering was relatively stable. The flowering phenology of clonal ramets within clones was only 1 ~ 2 d. The frequency of flowering in the north and south of canopy varied greatly with the other three orientations. After about 1d. In addition, the effect of flowering phenology on the synchronization index and the difference in pollination efficiency among different phenological types were also studied