中文摘要：

以云南栽培板栗品种永丰1号、云富、云良为母本，北方型板栗品种燕山红粟、燕龙为父本，进行人工授粉试验。通过对其果实含糖量（可溶性总糖与还原糖）的测定，板栗花粉直感效应研究，以改善板栗的食用和加工品质。结果表明：以北方2个品种为父本授粉云南3个品种所结果实的含糖量显著高于其自然授粉和自花授粉的南方品种，在果实含糖量上具有明显的花粉直感效应。

英文摘要：

An artificial pollination hybridization experiment was conducted on chestnut by using local culti- vars Yongfeng No. 1, Yunfu, and Yunliang as the female parents, the northern China cultivars Yanshan- hongli and Yanlong as the male parents. The effects of metaxenia were investigated by measuring the con- tents of total sugar in the fruit, including soluble sugar and reducing sugar to improve the processing and edible characters of the fruit. The results showed that the sugar content of the fruits of the eultivars which used the two northern varieties as their male parents was much more than others, indicating significant metaxenia effect.