The present application relates to a kind of efficient breeding methods of
high resistance larch new
germplasm of pine moth, including
larch high resistance scion collection,
rootstock selection and
processing,
grafting breeding and
grafting management etc., in the process of
high resistance scion
seedling breeding, by scientific seed winter storage,
sowing seedling and
seedling management etc., to obtain a large number of healthy high resistance scion tender
shoot provides guarantee. Scion uses the tender
shoot of 10-15 days growth on seedling, and the high adaptability
larch seedling of 10-15 days seedling stem straight thick, top
bud full,
root system developed, no
disease and injury is selected as
rootstock, so that
grafting joint can heal quickly, shorten breeding cycle. After grafting, first grow in the environment very stable
plant growth room for about 2 months, etc. Scion survival, transition period is transferred into
greenhouse and grows for 1 year to reach healthy seedling, finally, further seedling raising in outdoor open-air test ground, so that seedling is fully lignified, thus a large number of high resistance pine moth larch seedling resources for artificial
afforestation are obtained. The present application reduces the probability of occurrence of
insect pests from the source, improves the
insect resistance of larch itself, and improves the forest quality, growth rate and wood utilization efficiency.