POSTDISPERSAL SELECTION FOLLOWING MIXED MATING IN EUCALYPTUS REGNANS
POSTDISPERSAL SELECTION FOLLOWING MIXED MATING IN EUCALYPTUS REGNANS
复制标题
桉树混合交配后的扩散后选择
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
B. Potts
中科院分区：
文献类型：
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作者：
C. Hardner;B. Potts
Eucalyptus regnans is a mass flowering, tall forest tree of southeastern Australia with a mixed mating system. A field trial containing randomized single tree plots of self, outcross, and naturally open‐pollinated (OP) progenies of 13 parents from two natural populations was surveyed over 15 yr. Inbreeding depression in survival at 15 years was 67% for selfs, one of the highest levels reported for a tree species, and differed little between populations. OP progenies were intermediate and the difference in fitness among the three cross types indicated that at planting, 59% were derived from outcrossing. However, with selection against the inbred progenies, this increased to 83% by 15 yr of age. Most selection against selfs occurred after four years, coincident with canopy closure and the apparent onset of intense competition.
