孙小红;周瑾;胡春霞;吕洪飞;储开江;王国夫;

• 1:绍兴文理学院元培学院
• 2:浙江理工大学生命科学学院
• 3:浙江省嵊州市林业局

摘要(Abstract)：

【目的】研究海拔高度对香榧种子外观性状及营养品质的影响,为选择香榧适生海拔高度范围提供依据。【方法】在同一香榧产区的5个海拔段(65、480、516、565、645 m)采集香榧种子,测定香榧种子的外观性状和营养品质,运用SPSS 19. 0对种蒲外观、种子长度、宽度,单粒质量等11个外观性状和粗脂肪、蛋白质、酸价等10个营养品质指标进行相关分析、逐步回归分析、因子通径分析、决定程度分析。【结果】海拔高度与种子长、出仁率、种蒲形指数等呈显著正相关(p <0.05),说明随海拔的升高,香榧种蒲变长,种子变长,出仁率增加。海拔高度与蛋白含量、硬脂酸含量、亚油酸含量呈显著负相关(p <0.05)。但不同海拔香榧粗油脂含量差异不显著(p <0.05)。因子通径分析表明海拔高度的变化主要影响香榧种子的种蒲重量和种子长度,种蒲质量和种子长度两个外观性状的91.2%受海拔高度变化的影响。海拔高度的变化主要影响二十碳二烯酸、二十碳三烯酸、油酸和硬脂酸等四个营养指标,海拔对二十碳二烯酸的影响最大,其余依次为二十碳三烯酸、油酸和硬脂酸。香榧种子的4个营养成分指标的99.2%受海拔高度变化的影响。【结论】海拔高度的变化综合影响了香榧种子的部分外观性状和营养成分,其中海拔高度对种蒲重量和二十碳二烯酸变异的直接作用最大。但海拔65 m香榧营养指标满足香榧生产基本要求,香榧栽培可适当扩大到低海拔区域。

关键词(KeyWords)： 香榧;海拔;种子;营养品质;相关分析

Abstract:

Keywords:

基金项目(Foundation): 浙江省自然科学基金项目(LQ19C160003);; 绍兴市2014年科技计划项目(2014B70032)

作者(Author): 孙小红;周瑾;胡春霞;吕洪飞;储开江;王国夫;

Email:

DOI: 10.13925/j.cnki.gsxb.20180525

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