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中国农学通报

中国农学通报 ›› 2014, Vol. 30 ›› Issue (21): 106-112.doi: 10.11924/j.issn.1000-6850.2013-3079

所属专题： 马铃薯

• 农学 农业基础科学 • 上一篇    下一篇

甘薯根系生物学性状的相关性、主成分和灰色关联度分析

汪宝卿   

  • 收稿日期:2013-11-22 修回日期:2014-01-17 出版日期:2014-07-25 发布日期:2014-07-25
  • 基金资助:
    国家甘薯产业技术体系 “北方区栽培岗位” (CARS-11-B-11)。

Correlation, Principal Component and Grey Relation Analysis of Sweetpotato Roots on Biological Traits

  • Received:2013-11-22 Revised:2014-01-17 Online:2014-07-25 Published:2014-07-25

摘要： 为研究甘薯根系生物学性状的内在关系，了解其形成和分化规律，为甘薯标准化栽培和新品种培育提供理论支撑。试验通过温室水培和田间调查相结合的方式，利用统计学方法研究了10个甘薯品种的根系性状。栽后10天，甘薯苗期根系的投影面积、表面积、平均直径和体积等形态性状贡献率最高且达80.56%；栽后20天，根平均直径的贡献率最高且达27.79%。收获后，单株块根总鲜重与倒三节、倒二节块根重量呈极显著正相关，与商品薯数呈显著正相关，与倒二节块根数呈显著负相关，与倒三节块根重量关联系数最高且达0.6595。在栽后15天，苗期根系的投影面积、表面积和体积与单株块根总鲜重之间呈显著负相关；而在栽后25天，苗期根系干重与单株块根总鲜重之间呈显著正相关，苗期根干重、根体积、根长和根平均直径等性状与单株块根总鲜重关联度较大。栽后10天和20天可能是甘薯根系生长、分化的重要时间节点，节间长度和栽插深度影响产量形成，苗期根系生物学特性与收获后块根产量之间有直接关系。

关键词: 政策, 政策

Abstract: The main purpose of the research was to research internal relationship of sweetpotato roots on biological traits, comprehend Regularity of formation and differentiation, and provide theoretical support for standard cultivation and new variety breeding. The combination of hydroponics in greenhouse and investigation in the field were used to research internal relationship of root traits in ten sweetpotato varieties by statistical approach. The morphological trait of seedling roots such as projected area, superficial area, average diameter and volume processed the highest contribution rate and reached 80.56% in 10 days after transplanting (DAT), and the contribution rate of roots average diameter reached up to 27.79% in 20 DAT. There were highly significant positive correlation between total fresh weight per plant root and storage weight of reciprocal 3rd node, and storage weight of reciprocal 2nd node. Significant positive correlation relationship was showed between total fresh weight per plant root and commercial storage numbers. Significant negative correlation relationship was showed between total fresh weight per plant root and storage numbers of reciprocal 2nd node. The relation coefficient between total fresh weight per plant root and storage weight of reciprocal 3rd node was the highest and reached 0.6595. There was significant negative correlation between projected area, superficial area, volume and total fresh weight per plant root in 15 DAT, but there was significant positive correlation between dry weight of seedling roots and total fresh weight per plant root in 25 DAT. The relevancy between dry weight, volume, length, average diameter of seedling roots and total fresh weight per plant root was higher. There were maybe important time node for growth and differentiation of sweetpotato roots in 10 DAT and 20 DAT. The panel length and transplanting depth influenced yield information. The direct relationship existed between biological traits of sweetpotato seedling roots and yield of storage roots after harvested.