福建省沿海地区木麻黄枯死抗性育种可能性的探讨

An Approach of the Possihility of the Resistance Breeding of Casuarina equisetifolia Withered Death in the Coastal Areas, Fujian Province

对１５年生３４个木麻黄优树半同胞子代测定林死亡率研究结果表明：地区间、家系间差异显著。厦２６家系死亡率最低，仅为７．４％；惠安群体的重复力最高，达４３．５８％。因此，在考虑地区的基础上进行抗性选育，可以达到预期的育种目标。

The death rate study results of test stands of 34 15-year-old Casuarina equisetifolia plus tree half-sib progenies demonstrate that the difference among areas and among families is significant.The death rate ofthe Xia26 Family is lowest(only 7.4%)and the repeatability of the Huian population is highest(43.58%).And therefore the expected breeding objectives can be reached on the basis of considering the factor of areasto conduct the resistant selective breeding.