【摘要】 为促进铁橡栎优良家系的早期选择及良种选育,以建水县5个铁橡栎种群的23个家系为研究材料,通过种长、种宽、种形指数、单果重及千粒重5个性状指标的测定,分析铁橡栎不同家系及种群间种子的形态特征及变异。结果表明:铁橡栎种子的5个性状指标在家系间及种群间均存在着显著(P<0.05)或极显著差异(P<0.01)。单粒重及千粒重变异幅度较大,种长、种宽及种形指数3个性状更趋于稳定,种群间变异小于家系间的变异。种子的形状主要受遗传控制,受环境影响较小,单粒重及千粒重受分布区海拔的影响而存在垂直变异,种子的大小及质量则受热量控制而呈现出一定的地理性变异,单粒重及千粒重是影响种子形态特征的主要性状。基于相关的分析结果,格安、燕子洞、黄龙寺3个种群的1、13、15、18、20、21、22和23号家系共8个家系属种子质量优良的家系,种群则是燕子洞、黄龙寺两个种群。更多还原

【Abstract】 In order to promote the early selection of fine families and breeding of fine varieties of Quercus cocciferoides,taking 23 families of 5 Quercus cocciferoides populations as study materials,through examining seed length,seed width,seed shape index,single seed weight and 1000-seed weight,the seed morphological characteristics and variation were analyzed.The results showed that between different families and populations,the differences of 5 examined indexes obtained significant(P<0.05)or extreme significant(P<0.01).The variation of single seed weight and 1000-seed weight were obvious,whereas seed length,seed width and seed index tended to stable,the variation between different population was lower than that in between different families.The shape of seed was mainly controlled by gene,whereas slightly affected by environmental factors.Single seed weight and 1000-seed weight showed vertical variation affected by elevation,latitude and longitude.The size and weight were controlled by heat conditions,showed the characteristics of geographic variation.Single weight and 1000-seed weight were the dominant parameters affecting the morphology of seed.Based on the correlation analysis,eight families respectively from Ge′an,Yanzidong and Huanglongsi were selected as quality families,quality populations were Yanzidong and Huanglongsi.更多还原