摘要
根据银杏种核的形状将银杏雌株品种分为长子、佛指、马铃、梅核和圆子５种类型。测定分析结果表明，不同品种类型间的种核三维度，即长／宽、长／厚、宽／厚比具显著或极显著差异，其株间变异较小，种仁中氢氰酸含量与种核的宽／厚比呈极显著正相关；而不同品种类型间的单核重及种仁中与品质密切相关的干物质、支链淀粉、直链淀粉、淀粉、粗蛋白及可溶性糖含量差异不显著，但其株间变异较大，最大变异系数达到２４．７９％。
ABSTRACT The female plants of Ginkgo biloba, based on the shape of seed stones,were divided into five variety types, i.e. Changzi, Fozhi, Maling, Meihe and Yuanzi.After analysis of variance,correlation and regression,it was indicated that a significant or most significant difference existed in the ratio of length to width,or length to thickness,or width to thickness of seed stones among five variety types.The hydrocyanic acid content in the kernel( y ) was correlative with the ratio of width to thickness of seed stones( x )( r =0 500 0 **) ,which could be expressed as the regressive equation of =3 245 8+ 1 300 2 x . There were insignificant differences for the single stone weight and the content of dry matter,linear chain starch,amylopectin,starch,rough protein,soluble sugar and hydrocyanic acid in the kernel,which had the close relations to the stone quality. Those research results have an important value to the classification research and the single selection for the Ginkgo's female plants.
基金
林业部重点科研资助
关键词
银杏
核形指数
单核重
种仁成分
分析
Ginkgo biloba, seed stone shape index,components in kernel,test of significance,regressive analysis
