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白杨派树种具有速生、品质优良、适生性强等优点,在林业生产中起着重要作用。如能通过杂交育种育出更为优良的白杨杂种品系,使它们具有较高的杂种优势,在产量上超过其他杨树优良品种,这将对林业生产的提高超重要作用。为此目的,我们进行了白杨派各种杨树的种间杂交及白杨派与黑杨派、青杨派的派间杂交,通过这些远缘杂交选育出了在产量上超过优良品种毛白杨、银毛杨的优良无性系原株741号303号106号。这些无性系具有较高的杂种优势。本文拟对白杨种间派间杂交的杂种优势现象进行初步分析。
Poplar tree species with fast-growing, good quality, strong fitness and other advantages, plays an important role in forestry production. Breeding superior hybrid poplar hybrids through crossbreeding, giving them higher heterosis and yielding more superior varieties of poplar will have an exceedingly important effect on improving forestry production. To this end, we conducted a variety of poplar birch interspecific hybridization and poplar and Black Poplin, Qingyang faction crossbreed, through these distant hybrids bred out in the yield of superior varieties of Populus tomentosa , Silver wool Yang excellent clones original No. 741 303 106. These clones have higher heterosis. This article intends to analyze the interspecific hybrid heterosis of aspen.