›› 2016, Vol. 28 ›› Issue (9): 1447-1453.DOI: 10.3969/j.issn.1004-1524.2016.09.01

• Crop Science •     Next Articles

Correlation analysis and principal component analysis on quality traits in hybrid wheat

LI Gui-ping1, ZHANG Gen-sheng1, BA Qing-song1, ZHANG Gai-sheng2, *   

  1. 1. School of Life Science, Huaibei Normal University, Huaibei 235000, China;
    2. Key Laboratory of Crop Heterosis of Shaanxi Province, College of Agronomy, Northwest A&F University, Yangling 712100, China;
  • Received:2015-12-04 Online:2016-09-15 Published:2016-11-23

Abstract: In order to explore the performance of quality traits of wheat hybrid in different generations, the heterosis, the characteristics correlation, parent-offspring correlation and principal component analysis of seed quality and dough rheological characteristics of four wheat cultivars and their four hybrids F1, F2 were analyzed. The results showed that (1) Heterosis of seed quality characters in F1 generation hybrid was far greater than that of F2 generation. There was higher heterosis of dough quality in F2 generation hybrid seeds. (2) In the process of wheat quality improvement, grain hardness and protein content as an index for selection, is helpful to select superior genotypes of high gluten content, sedimentation value, protein quality and milling quality. (3) When the hybrid grain protein content was selected in the early-generation, low-parent value shouldn��t be neglected. And the key to improving Zeleny sedimentation value of hybrid F2 was to improve the value of high parent and mid-parent. (4) Through principal component analysis, eight traits of F2 generation were consolidated into two principal components.

Key words: wheat, quality character, heterosis, parent-offspring correlation, quality correlation, principal component analysis

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