食品科学 ›› 2013, Vol. 34 ›› Issue (21): 16-19.doi: 10.7506/spkx1002-6630-201321004

• 基础研究 • 上一篇    下一篇

鲜食糯玉米籽粒物性差异与主成分分析

陆大雷,王 鑫,闫发宝,陆卫平*   

  1. 扬州大学 江苏省作物遗传生理重点实验室,农业部长江中下游作物生理生态与栽培重点开放实验室,江苏 扬州 225009
  • 收稿日期:2012-08-09 修回日期:2013-09-26 出版日期:2013-11-15 发布日期:2013-10-28
  • 通讯作者: 陆卫平 E-mail:wplu@yzu.edu.cn
  • 基金资助:

    国家自然科学基金项目(31271640;30971731;31000684);江苏省高校自然科学基金项目(11KJB210006);
    江苏高校优势学科建设工程项目;江苏高校优秀科技创新团队资助项目;农业科研杰出人才及其创新团队资助项目

Genotypic Difference and Principal Component Analysis for Grain Textural Properties of Fresh Waxy Maize

LU Da-lei,WANG Xin,YAN Fa-bao,LU Wei-ping*   

  1. Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Key Laboratory of Crop Physiology, Ecology and Cultivation in
    Middle and Lower Reaches of Yangtse River, Ministry of Agriculture, Yangzhou University, Yangzhou 225009, China
  • Received:2012-08-09 Revised:2013-09-26 Online:2013-11-15 Published:2013-10-28
  • Contact: LU Wei-ping E-mail:wplu@yzu.edu.cn

摘要:

目的:利用主成分分析方法确定影响鲜食糯玉米籽粒物性的主要参数。方法:采用质构分析(TPA)法研究鲜食糯玉米籽粒物性,并利用主成分分析方法对结果进行评价。结果:糯玉米籽粒物性91个品种间有极显著差异,且变异程度以黏着性最大,内聚性最小。相关分析表明,硬度、弹性、内聚性、耐咀性和回复性两两极显著正相关;黏着性与硬度显著负相关,与回复性极显著相关;脆度与弹性、内聚性和耐咀性显著正相关。7个物性参数可转换为3个独立的主成分,累计方差贡献率为86.37%,影响鲜食糯玉米籽粒品质最重要的物性参数为耐咀性、黏着性和脆度。91个糯玉米品种可分为两大类,其中第1类的耐咀性比第2类高96.60%,其他特征参数亦高16.20%~40.30%。结论:糯玉米物性参数间有良好的相关性,影响鲜食糯玉米籽粒品质最重要的物性参数为耐咀性、黏着性和脆度。

关键词: 鲜食糯玉米, 物性, 主成分

Abstract:

Objective: To determine the main textural parameters of fresh waxy maize through principal component
analysis. Methods: The textual properties of fresh waxy maize grain were studied and the genotypic differences of 91
varieties were estimated by principal component analysis. Results: The textural characteristics were significantly different
among the tested varieties, and variations were observed in the highest adhesiveness and the lowest cohesiveness.
Significant positive correlations among hardness, springiness, cohesiveness, chewiness and resilience were observed.
Adhesiveness was negatively correlated with hardness but positively correlated with resilience. Fracturability
was positively correlated with springiness, cohesiveness and chewiness. The above seven textural characteristics were
transferred to three independent principal components with cumulative contribution of 86.37%. Among these textural
characteristics, chewiness, adhesiveness and fracturability were important to estimate the quality of fresh waxy maize.
The 91 varieties could be divided into two major types by clustering, and the chewiness of one type was 96.60%,
which was higher than the other, with a simultaneous increase of 16.20%—40.30% in other characteristics. Conclusion:
Excellent correlations were observed among textual characteristics, and the main parameters to estimate waxy
maize grain quality were chewiness, adhesiveness and fracturability.

Key words: fresh waxy maize, textural properties, principal component

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