广东省顺德古银杏的初步研究

Primary study on Shunde Gingko in Guangdong

对广东省顺德市清晖园内1株古银杏雌树及近年栽种的银杏树进行物候观测调研表明,该古银杏树虽生长于北纬23°以南,年均温度22℃以上,仍能每年开花结实。与该省其他地区的银杏树相比,顺德银杏物候期包括萌芽、开花和种子成熟等各主要时期均较迟。该株银杏种核形态以及过氧化物酶分析均表现出自身特性,它可能是1个新品种或变种。

The phenological characters of Gingko in Shunde City of Guangdong Province were observed.An old Gingko tree over 150 years in Qinghui Garden of Shunde City is found to be able to grow,bloom and bear in the place of lower 23℃ at an average temperature over 22℃.Its phenology including sprouting date,bloom date and seed ripen date is later than that in other area of Guangdong Province.The Gingko tree also shows some specific morphological characters in its seed and biochemical specifity in its POD,indicating that this Gingko tree may belong to a new variety.