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研究了鹅掌楸属树科杂交可配性及杂科优势在种实性状上的表现，结果表明：（ｌ）千粒 重和种子饱满率在父本间和母本间差异均达极显著水平，两个性状在不同母本间不相关（ｒ= ０． ００７１），而在不同父本间呈中度正相关（ｒ=０． ６６４ ７）， 因此，不宜以千粒重作为比较母树间种 子品质的指标，而在研究不同父本时种子品质影响时，千粒重指标具有一定的参考价值；（２）不 同交配系统间及同一交配系统内不同交配组合间杂交可配性不同，授粉结实率应作为亲本选 择的重要依据。其中，以中国马褂木为轮回亲本的正、反交回交系统和以中国马褂木为母本的 杂交系统具有较高的杂交可配性，在杂交制科时可加以利用；（３）与中国马褂木种内交配系统 （ＣＸＣ）相比，种间杂交系统（ＣＸＴ）发芽效率提高 ７０．７８％、平均发芽时间缩短1ｄ、发芽高峰 期提早３ｄ，这些都可以看作杂种优势的早期表现形式。而 ＦＩ杂种马褂木自（近）交系统（Ｈ× H发芽效率最低、平均发芽时间最长、发芽高峰期出现最晚，则可能与近交衰退有关。
The results showed that: (1) 1000-grain weight and seed filling rate had extremely significant differences between male and female parents in the crosses of Liriodendron trees, The two traits were not related to each other (r = 0. 0071), but positively correlated with each other (r = 0.6647). Therefore, it is inappropriate to compare the seed weight with the 1000-grain weight But when studying the effect of seed quality on different male parents, the 1000-grain weight index has a certain reference value; (2) The crossover compatibility between different mating systems and within the same mating system is different, and the pollination rate should be used as the parent An important basis for selection. Among them, the positive and negative reciprocal diplomatic systems, which are Chinese reeling parents, and the hybrid system that uses Chinese Liriodendron as the female parent have high hybridization compatibility and can be utilized in the field of hybridization. (3) Compared with CXC, the germination efficiency of interspecific hybridization system (CXT) increased by 70.78%, the average germination time shortened by 1d and the germination peaked earlier by 3d, all of which could be regarded as the early manifestation of heterosis form. However, the FI hybrid seedlings from the (near) delivery system (H × H germination efficiency is the lowest, the average germination time is the longest, the peak emergence of the latest, may be related to the recession inbreeding.