小麦族的基因组显性及其育种学意义

doi:10.3724/SP.J.1006.2020.01022

Abstract

Abstract:

Triticeae tribe houses a number of allopolyploid species that harbor combinations of various genomes. The different genomes of an allopolyploid may have asymmetric contributions to morphological traits. For instance, the taxon traits of allopolyploids within genus Triticum is highly like those from the donor species of A-genome, termed this phenomenon as A-genome dominance. Because of genome dominance, the allopolyploids of Triticeae are grouped into different species clusters with A, D, U, or St as the pivotal (dominant) genome. Genome dominance may confer the advantages in evolution and adaptation. In breeding, it is an important factor to influence the development of novel allopolyploid crops and the design of wheat-alien chromosome translocations.

Key words: allopolyploid, genome asymmetry, pivotal genome

LIU Deng-Cai, ZHANG Lian-Quan, HAO Ming, HUANG Lin, NING Shun-Zong, YUAN Zhong-Wei, JIANG Bo, YAN Ze-Hong, WU Bi-Hua, ZHENG You-Liang. Genome dominance and the breeding significance in Triticeae[J].Acta Agronomica Sinica, 2020, 46(10): 1465-1473.

Figures/Tables 3

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