| 油松无性系开花物候特点的研究 |
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| 引用本文： | 张华新,陈丛梅.油松无性系开花物候特点的研究[J].林业科学研究,2001,14(3):288-296. |
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| 作者姓名： | 张华新 陈丛梅 |
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| 作者单位： | 1. 中国林业科学研究院林业研究所,
2. 河南省濮阳市林业科学研究所, |
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| 基金项目： | 国家林业局重点课题!“油松种子园经营管理技术研究”(92 0 10 1)的部分内容 |
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| 摘 要： | 在河南卢氏油松种子园对46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10d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1-2d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。
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| 关 键 词： | 油松 种子园 无性系 开花物候 同步指数 |
| 文章编号： | 1001-1498(2001)0288-09 |
| 收稿时间： | 5/3/1999 12:00:00 AM |
Studies on Flowering Phenology of Clones in Pinus tabulaeformis Seed Orchard |
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| ZHANG Hua-xin and CHEN Cong-mei.Studies on Flowering Phenology of Clones in Pinus tabulaeformis Seed Orchard[J].Forest Research,2001,14(3):288-296. |
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| Authors: | ZHANG Hua-xin and CHEN Cong-mei |
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| Institution: | Research Institute of Forestry, CAF, Beijing 100091, China;Research Institute of Forestry of Puyang City, Puyang 457000, Henan, China |
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| Abstract: | The observation was carried out on the floweri ng phenology in the init ial period and abundant cone period for 46 clones in Pinus tabulaefo rmis seed orchard located in Henan Province. The differences of flo wering phenologies among clones, among ramets within a clone, at different posit ions within a crown were described, the relationship of flowering phenologies of the same clones in different years were analyzed. The female strobili opened ea rlier, and ended later than male strobili as well. Receptivity of female strobil i lasted for a longer time than male strobili shedding, the receptivity appeared to coincide with the pollen shedding. In different years, 2～3 days differences existed for the flowering time, the flowering time was related with the activel y accumulative temperature with more than and equal to 10 ℃. The lasting period showed about 10-day difference for lasting time of flowering period in differe n t years. In the different years, there was big difference in flowering time for different clones, but the sequence of the flowering time for different clones wa s relatively consistent, the flowering time showed 1～2 day difference for diffe rent ramets within a clone. There was big difference in flowering frequency of d ifferent dates between strobili facing north and these facing other three direct ions, strobili facing north opened 1-day later than these facing other three di r ections. In addition, the relationship between flowering phenology and synchroni zation index, and differences of pollinated efficiency for different flowering p henology types were discussed. |
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| Keywords: | Pinus tabulaeformis seed orchard clone flowering phenology synchronization index |
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