Breeding-related Traits of Two Wheat Germplasms: Preliminary Analysis

doi:10.11924/j.issn.1000-6850.casb2023-0158

Abstract

Abstract:

The aim of this study was to preliminarily identify the breeding-application characteristics of two wheat germplasm resources materials, ‘16qin10188’ introduced from German and ‘YB’ with large spike and high disease resistance. In this study, the leading wheat cultivars and landraces from southwestern China were used to cross with the two germplasms to generate F₁, and the yield-related traits and disease resistance of F₁ generations and their parents were investigated. ‘16qin10188’ had the characteristics of dwarf, multi-grain and resistance to both stripe rust and powdery mildew. And in F₁ generations, its dwarf trait showed partially dominance, and its high spike grain number trait showed recessiveness or partially dominance. The stripe rust resistance of ‘16qin10188’ was dominance while its powdery mildew resistance was recessive. ‘YB’ had oligo culm with long spike and resistance to stripe rust and powdery mildew. In the F₁ generations, the long spike of ‘YB’ showed partially dominance, and the oligo-culm trait was recessive. Grains per spike and grain weight showed significant heterosis, and its powdery mildew resistance was recessive. The dwarf trait and stripe rust resistance of ‘16qin10188’ can be selected in the early generation in breeding, while its high spike grain number and powdery mildew resistance can be selected in the higher generation population; ‘YB’-derived F₁ showed the significant heterosis in grain yield, and ‘YB’ could be considered as a potential elite parent for hybrid wheat breeding.

Key words: common wheat, germplasms, yield-related trait, breeding application, heterosis

ZHANG Jing, QU Jipeng, WAN Hongshen. Breeding-related Traits of Two Wheat Germplasms: Preliminary Analysis[J]. Chinese Agricultural Science Bulletin, 2023, 39(35): 1-8.

Figures/Tables 4

References 29

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