Welcome to Journal of Agriculture,

Journal of Agriculture ›› 2026, Vol. 16 ›› Issue (6): 16-22.doi: 10.11923/j.issn.2095-4050.cjas2025-0030

Previous Articles     Next Articles

Evaluation of Agronomic Characters of New Varieties (Lines) of Linseed in Bashang Area of Northwestern Hebei

WANG Weijun1(), GUO Na1, MA Jianfu1, GUO Yingjie1, LI Airong1(), LI Yang1, BA Yongmei2   

  1. 1 Zhangjiakou Academy of Agricultural Sciences/ Hebei Key Laboratory of Linseed Breeding, Zhangjiakou, Hebei 075000
    2 Agricultural and Rural Bureau of Guyuan County, Zhangjiakou, Hebei 076550
  • Received:2025-02-10 Revised:2025-05-15 Online:2026-06-20 Published:2026-06-18

Abstract:

To address the issues of limited variety availability and unstable yield of linseed in the Bashang region of northwestern Hebei Province, and to screen for superior cultivars suitable for local conditions while improving breeding efficiency, 13 linseed cultivars (lines) developed by 8 domestic breeding institutions were used as experimental materials. Their phenological stages and main agronomic traits were investigated and analyzed using correlation analysis, principal component analysis (PCA), and cluster analysis. The results showed that: (1) all 13 linseed varieties (lines) were medium-maturity types, with a growth period ranging from 90.5 to 101.5 days; (2) the agronomic traits exhibited rich variation, with coefficients of variation between 3.70% and 73.23%, and these traits were identified as core factors influencing yield; (3) correlation analysis revealed three pairs of traits with highly significant positive correlations and one pair with a significant positive correlation. Specifically, branch number showed correlation coefficients of 0.924 and 0.701 with the number of fruits per plant and yield, respectively, confirming it as a core trait affecting yield; (4) principal component analysis extracted four principal components, which cumulatively explained 83.034% of the total variance; (5) cluster analysis classified the 13 linseed lines into four groups: group I had medium branch numbers and fruits per plant with relatively high yield; group II had high branch numbers and fruits per plant with the highest yield; group III had medium technical length and yield; group IV had low branch numbers and fruits per plant with the lowest yield. In summary, branch number is a key agronomic trait regulating linseed yield. The lines '8008' and '2009-1A-1' from group II demonstrated the best overall performance and can be used as breeding parents or varieties for production and promotion. Subsequent studies should incorporate quality indicators, stress resistance data, and multi-location, multi-year trials to further verify the stability and adaptability of these superior cultivars.

Key words: linseed, new variety, agronomic traits, correlation analysis, principal component analysis, cluster analysis

CLC Number: