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中国农学通报 ›› 2011, Vol. 27 ›› Issue (5): 120-125.

所属专题: 马铃薯

• 农学 农业基础科学 • 上一篇    下一篇

北方区试中甘薯农艺性状与产量的多元回归和通径分析

汪宝卿 王庆美 张海燕 解备涛 董顺旭 张立明   

  • 收稿日期:2010-11-01 修回日期:2010-11-12 出版日期:2011-03-05 发布日期:2011-03-05
  • 基金资助:

    国家甘薯产业技术体系

Multiple Regression and Path Analysis between Agronomic Traits and Yield of Sweetpotato(Ipomoea batatas L.) in Regional Trails of North China

  • Received:2010-11-01 Revised:2010-11-12 Online:2011-03-05 Published:2011-03-05

摘要:

应用多元统计方法,分析了甘薯北方区试中农艺性状与产量之间的关系。结果表明:农艺性状对鲜薯、薯干和淀粉产量的影响各不相同。回归分析发现,单株茎叶重、大中薯率、小薯率和单株结薯数与鲜薯和薯干产量之间存在显著的线性关系,单株茎叶重和干率与淀粉产量之间存在显著的线性关系。相关性分析发现,鲜薯产量与干率、淀粉率和病情指数均呈极显著负相关关系,与大中薯率显著正相关,与小薯率显著负相关。薯干产量与分枝数显著负相关,与干率呈显著正相关。淀粉产量与分枝数显著负相关,与干率和淀粉率均呈显著正相关。通径分析发现,淀粉率和大中薯率对产量的直接作用较大,而单株茎叶重、蔓长、分枝数和干率对鲜薯、薯干和淀粉产量的作用大小和作用方向均存在差异。因此,在高产栽培中,应选择茎基部粗、蔓长较短、分枝数较少、薯块大小较均匀、数量适中和大中薯率较高的品种。若进行高干率和高淀粉品种选育,还需注重干率和淀粉率等指标的选择。

关键词: 乳化工艺, 乳化工艺

Abstract:

Multiple statistic methods were used to analyze relationship between agronomic traits and yield of sweetpotato in regional trails of North China. Results showed that effects of agronomic traits on fresh weight, dry weight and starch yield were different. Significant linear relationships existed between dry/fresh weight and weight of stem and leaf per plant, percentage of large and middle tuberous root, percentage of small tuberous root, and number of tuberous root per plant. The same relationship was also showed between starch yield and weight of stem and leaf per plant, percentage of dry content by regression analysis. Fresh weight of sweetpotato was extremely significant negative correlation relationship with percentage of dry matter content, percentage of starch content, and disease index by correlation analysis. Not only that, fresh weight had significant positive correlation with percentage of large and middle tuberous root, while significant negative correlation with percentage of small tuberous root. Dry weight had significant positive correlation with percentage of dry matter content, while significant negative correlation with branch number. Starch weight had significant positive correlation with percentage of dry matter content and starch content, while significant negative correlation with branch number. Influence of percentage of big and middle tuberous root and percentage of starch content on yield were higher, the magnitude and direction of weight of stem and leaf per plant, length of vine, branch number, percentage of dry matter content on fresh weight, dry weight and starch weight were different. Accordingly, plant with higher stem diameter, shorter length of vine, fewer branch number, regular tuberous root, moderate the number of tuberous root, higher percentage of big and middle tuberous root were preferred in high yield cultivation. Percentage of dry matter content and starch content were still emphasized in variety choosing of high dry matter and starch.