普通小麦抽穗期基因定位的研究

Localization of Genes for Heading Date in Common Wheat

本文以特晚熟多小穗品系10阿为被测材料,中国春和阿勃两套单体系列为测验系,对抽穗期性状进行了基因定位研究。结果表明,被测系10阿晚抽穗,受5A、1B、2B、6B和2D染色体上的隐性基因所控制。其中,2D染色体上的基因表现为强效,5A、1B、2B和6B染色体上的基因表现为弱效。据前人研究和本试验结果分析认为,被测系10阿的1B和2B染色体上可能具有控制晚熟性的新基因。

Localization of genes for heading date was carried out in common wheat (Triticum aesti-vum L.) multispikelet line with rather latet heading data, 10-A, by using the monosomic series of the two regular lines, Chinese Spring and Abbondanza. The late heading date of the tested line 10-A was found to be controlled by five recessive genes, located on chromosome 2D (one major effect) and 5A, 1B, 2B, 6B (four minor effect) Accrording to analysis of the results in the previous studies and the present experiment, it was speculated that new genes governing late heading date located probably in chromosomes IB and 2B of the tested line 10-A.