摘要
普通小麦是一个异源六倍体物种,具有ABD三个染色体组,D染色体组在来源和进化过程中都与A、B染色体组不同,D染色体组来自于粗山羊草,含有丰富的抗病、抗虫、抗寒、优质等有益基因,因此D染色体组的研究对小麦的产量、品质改良具有重要意义。但是由于长期的定向遗传改良,我国普通小麦的遗传差异较小,遗传基础狭窄,特别是在D染色体组上尤为突出。一些对作物产量和品质有益的基因未被挖掘利用。本文对小麦D基因组的起源、遗传多样性和拓宽遗传基础的方法及基因定位等进行了综述,并结合本实验室的研究工作对其研究前景进行展望。
Hexaploid wheat consists of A, B and D genomes, the D genome in origin and in the evolution process is different with the A, B genome. D genome is derived from Aegilops tausch, which is rich in disease resistance, insect resistance, cold tolerance, highquality, and other useful genes, the research ofD genome on wheat yield and quality improvement is of great significance. Since long-term directional hereditary ameliorate, genetic base of common wheat in China is narrow, particularly on the D chromosome group. Some beneficial gene of the crop yield and quality have not been unearthed. This paper summarizes the origin of D genome, genetic diversity, broaden methods and gene mapping, and so on, The problems of D chromosome group are argued and the prospect of development is discussed.
出处
《分子植物育种》
CAS
CSCD
2008年第3期537-541,共5页
Molecular Plant Breeding
基金
国家自然科学基金项目(30671270)
国家863项目(2006AA10Z1E9)
关键词
普通小麦
D基因组
研究进展
Triticum aestivum L., D chromosome group, Research
