| 摘要: |
| 对苗圃中种植的红锥1.5代种子园中采集到的34个半同胞子代家系的株高、地径、叶片数量、光合能力（SPAD法）、叶片长度、叶片宽度和叶面积等7个表型进行测定，并计算叶片长宽比，结果表明：15个月生红锥的平均株高为47.2cm，株高平均变异系数为25.4%，平均地径为5.4mm，地径平均变异系数为20.7%，平均叶片数量为55.3片，平均SPAD值为38.2，平均叶片长度、叶片宽度和叶面积分别为9.0cm、2.5cm和14.3cm2，平均叶片长宽比为3.6。方差分析的结果显示8个生长表型在不同家系间均存在显著差异。通过苗期株高、地径的综合评价，参考其生长量的变异系数，共筛选出4个苗期表现优良的红锥家系，分别为A02、A08、A15和A31。 |
| 关键词: 红锥，苗期生长，半同胞家系 |
| DOI： |
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| 基金项目:广东省省级科技计划项目“珍贵树种培育创新团队建设”（2016B070701008） |
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| Half-sib Progeny Seedling Growth Differences Analysis of the 1.5th Generation Seed Orchard for Castanopsis hystrix |
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Yang Xiaohui and Pan Wen
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Guangdong Academy of Forestry,Guangdong Academy of Forestry
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| Abstract: |
| Seeds of 34 half-sib families were collected from 1.5th generation seed orchard of Castanopsis hystrix, all the seedlings were planted in the nursery garden. The plant height, ground diameter, leaf number, photosynthetic capacity (SPAD), leaf length, leaf width, leaf area were measured and the leaf length-width ratio were calculated. The result shows that after 15 months growth, the mean height of each family was 47.2cm and the ground diameter was 5.4mm. The coefficient of variation of plant height and ground diameter were 25.4% and 20.7%, respectively. Mean leaf number of each family was 55.3 and mean SPAD value was 38.2. Mean leaf length, mean leaf width and mean leaf area were 9.0cm, 2.5cm and 14.3cm2, respectively. The mean leaf length-width ratio was 3.6. Analysis of Variance indicated that all the eight phenotypes behaved significant differences between families. Referencing the plant height, ground diameter and the coefficient of variation, four half-sib families A02, A08, A15 and A31 were selected as their excellent performance in the seedling stage. |
| Key words: Castanopsis hystrix growth of seedling stage half-sib family |
