猴耳环不同家系的苗期生长分析

Analyses for Seedling Growth Traits in Different Families of Archidendron clypearia

对来自广东省内7个种源的30个猴耳环Archidendron clypearia家系的种子千粒重及其半年生实生苗的成活率、苗高和地径性状进行统计分析。结果表明:30个猴耳环家系的种子总平均千粒重为754.2 g,半年生实生苗的成活率均在93.30%以上;家系间苗高性状差异达到极显著水(P<0.001),平均苗高最大为19.96 cm,最低的只有11.50 cm。家系内个体间苗高也具有较大差异,变异系数最高的可达38.25%;家系间地径性状的差异也达到极显著水平(P<0.001),平均地径最大为0.57 cm,最小的只有0.39 cm。家系内地径的变异系数最高的达37.74%;各性状间的相关性分析结果表明,地径和苗高极显著正相关(r2=0.70,P<0.001),地径和苗高与种子千粒重均无显著相关性。

The survival rate,seedling height and ground diameter of 30 Archidendron clypearia families which from 7 sources in Guangdong province were statistically analyzed.The results showed that the average thousand kernel weight(TKW)of 30 A.clypearia families was 754.2 g,and the survival rate of semi-annual seedlings were above 93.30%.The difference of seedling height traits between families was extremely significant(P<0.001),The average seedling height was 19.96 cm at most and 11.50 cm at the lowest.The height of individual seedlings was also significantly different in the family with the highest coefficient of variation up to 38.25%;The difference of ground diameter traits between families also reached an extremely significant level(P<0.001),The average ground diameter was 0.57 cm at most and 0.39 cm at the lowest.The variation coefficient of the ground diameter in the family was up to 37.74%.Moreover,the correlation analysis between the traits showed that ground diameter and seedling height were significantly positively correlated(r2=0.70,P<0.001),while ground diameter and seedling height were not significantly correlated with TKW.