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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (22): 1-5.doi: 10.11924/j.issn.1000-6850.2013-0797

所属专题： 油料作物； 园艺

• 林学 园艺 园林 •    下一篇

不同地区银杏古树开花生物学特性研究1—— 开花物候期和花穗特征分析

王国霞 杨玉珍 曹福亮 张晓燕   

  • 收稿日期:2013-03-21 修回日期:2013-05-31 出版日期:2013-08-05 发布日期:2013-08-05

Studies on the Biological Character of Flowering of Ancient Male Ginkgo Biloba Trees in Different Areas——1,Analysis of Flowering Phenology and the feature of flower spikes

  • Received:2013-03-21 Revised:2013-05-31 Online:2013-08-05 Published:2013-08-05

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摘要： 本文对我国主要银杏产区的33棵百年以上的银杏古树开花生物学特性进行了研究。研究结果表明：2006年银杏古树雄株开花时间从3月底到4月中旬，花期3-7天不等，从南到北相继开花；33个银杏古树雄株2-4年生具花短枝上花穗数从3.1~6.02个不等，平均为4.53个；花穗长在16.55~32mm之间，平均为25.25mm；花穗宽5.2~8.19mm，平均为6.83mm；单个银杏花穗上的花药个数在36.68~73.26之间，平均为50.31个。方差分析结果表明，上述指标不同雄株间差异均极显著。

关键词: 研究进展, 研究进展

Abstract: The biological character of flowering were studied in 33 ancient male ginkgo trees which came from main distribution areas of Ginkgo Boliba L in China. The results showed that the flowering period of male ginkgo trees ranged from late March to middle April and flowering lasted for 3～7 days from south to north in 2006; the number of flower spikes on short shoot of 33 ancient male ginkgo trees ranged from 3.1 to 6.02 per shoot and the average number was 4.53 per shoot; the length of flower spikes ranged from 16.55mm to 32mm and the average number was 25.25mm; the width of flower spikes ranged from 5.2mm to 8.19mm and the average number was 6.83mm; the anther number of flower spikes ranged from 36.68 to73.26, and the average number was 50.31. Variance analysis indicated that 4 indexes among 33 ancient male ginkgo trees had significant difference.