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抗旱节水生理遗传交叉研究已成为国际植物抗旱节水研究的新生点,目前已对作物抗旱生理性状如ABA,渗透调节,WUE等进行了QTL分析,并进行了转抗旱基因和高光效基因植物的研究.我们对小麦水分利用效率进化和改良的生理遗传基础研究结果表明:随着小麦由2n→4n→6n的进化,旗叶WUE有递增趋势.黑麦4R染色体上有控制高WUE的基因,小麦A组染色体上载有高光合速率和高WUE基因,具体在1AL(长臂),2AL,2AS(短臂)和7AS染色体臂上载有高WUE基因,小麦染色体2AL有控制低蒸腾速率基因.这些研究都为转抗旱节水基因作物的培育打下了一定的基础.
Drought-resistant and water-saving physiological and genetic crossover has become a new international research point in plant drought-resistant and water-saving. At present, QTLs for drought-resistant physiological traits such as ABA, osmoregulation and WUE have been carried out and transgenic plants with drought- The results of our research on the physiological and genetic basis for the evolution and improvement of WUE in wheat showed that the WUE of flag leaf increased with the evolution of 2n → 4n → 6n, and the gene of high WUE on chromosome 4R of rye , Wheat A group contained high photosynthetic rate and high WUE genes, carrying high WUE genes on 1AL (long arm), 2AL, 2AS (short arm) and 7AS chromosomal arms, while wheat chromosome 2AL had a gene controlling low transpiration rate. All of these studies lay a solid foundation for the breeding of drought-tolerant water-gene crops.