Genetic testing of Pinus elliottii based on spatial analysis
In the study,the growth traits of free-pollinated semi-sibling experimental forests of Pinus elliottii were genetically analyzed,and the excellent families and individual plants were screened by breeding value estimation of families and individual plants.The results showed that the spatial micro-environment effect was significant in the test site,and the accuracy of genetic parameter estimation could be effectively improved by selecting appropriate spatial analysis model.The growth of height,diameter at breast height and volume of individual plants were controlled by moderate to weak genetic control,and the narrow sense heritability of individual plants were 0.12,0.13 and 0.12.Three excellent families,No.3,No.1 and No.42 were screened according to the ranking of breeding value of the tested families.The genetic gains of tree height,diameter at breast height and volume of individual plants of the selected families were 1.14%,1.92%and 4.62%,compared with the check families.Five excellent individual plants,No.238,No.87,No.45,No.151 and No.184,were selected according to the selection rate of 1%and considering the source families of individual plants.The genetic gains of the selected individual plants were 2.23%,3.60%and 10.55%,compared with the experimental population.
Pinus elliottiispatial analysisheritabilitybreeding valuegenetic gain
NETL
NSTL
万方数据
