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| 红锥2代种子园半同胞子代苗生长差异分析 |
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徐放1, 张卫华1, 杨晓慧1, 薄文浩2, 潘文1, 杨会肖1, 廖焕琴1, 徐斌1, 朱报著1, 王裕霞1
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1.广东省森林培育与保护利用重点试验室/广东省林业科学研究院;2.北京林业大学
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| 摘要: |
| 对育苗圃中种植的红锥 Castanopsis hystrix 2 代种子园中采集到的 14 个半同胞子代家系进行
播种，选取正常生长的苗木进行株高、地径、叶绿素含量（SPAD 法）、叶片数量、叶片长度、叶片宽
度、叶片长宽比和叶面积等 8 个性状的测定和计算，调查结果表明：15 个月生红锥苗木的平均株高可达
41.3 cm，平均地径为 4.9 mm，不同家系株高平均变异系数为 21.9，地径变异系数为 18.1%，平均 SPAD
值为 39.4，平均叶片数量为 44.4 片，叶片平均长度和宽度分别为 9.2 cm 和 2.6 cm，平均叶片长宽比为
3.6，平均叶面积达到 15.0 cm2
。方差分析的结果显示不同生长表型在 14 个不同家系间均存在显著差异
(P<0.01)。通过对不同家系的苗期株高、地径的综合评价，并参考其生长量的变异系数，共评选出 2 代种
子园中 5 个苗期表现优良的红锥家系，分别为 C02、C10、C11、C12 和 C13。 |
| 关键词: 红锥 苗期生长 半同胞家系 优良家系 |
| DOI： |
| 分类号: |
| 基金项目:广东省森林培育与保护利用重点实验室（SPU 2018-03），广东省重点领域研发计划项目（2020B020215002） |
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| Growth Difference Analysis of Half-sib Progeny Seedlings on the 2nd Generation Seed Orchard for Castanopsis hystrix |
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Xu Fang,YANG Xiaohui,ZHANG Weihua,PAN Wen,YANG Huixiao,LIAO Huanqin,XU Bin,ZHU Baozhu,WANG Yuxia
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Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization/ Guangdong Academy of Forestry
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| Abstract: |
| We collected seeds of fourteen half-sib families from 2nd generation seed orchard of Castanopsis
hystrix, all seeds were sowed and the seedlings were transplanted into the nursery. The plant height, ground
diameter, chlorophyll content (SPAD value), leaf number, leaf length, leaf width, leaf length-width ratio and leaf
area were measured or calculated. The result indicates at 15 months old, the mean height of fourteen half-sib
families reached 41.3 cm and the ground diameter was 4.9 mm. The coefficients of variation in plant height and
ground diameter were 21.9% and 18.1%, respectively. Mean leaf number each family was 44.4 per plant and mean
SPAD value was 39.4. Mean leaf length, mean leaf width and mean leaf area were 9.2 cm, 2.6 cm and 15.0 cm2
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respectively. The mean leaf length-width ratio was 3.6. Analysis of Variance indicated that all the eight phenotypic
traits behaved significant differences between different half-sib families (P<0.01). Considering the plant height,
ground diameter and their coefficient of variation, five half-sib families C02, C10, C11, C12and C13 were selected
as their excellent performance in the seedling stage. |
| Key words: Castanopsis hystrix growth of seedling stage half-sib family excellent family |
