草坪草分子遗传图谱的构建与应用研究进展

摘要/Abstract

摘要： 草坪草分子遗传图谱的构建始于20世纪90年代,构建高密度的分子遗传图谱研究将有助于提高草坪草的育种水平。近年来,分子标记技术的发展加速了草坪草分子遗传图谱构建的研究。然而与农作物相比,草坪草分子遗传图谱构建的研究还相对滞后。增加作图群体的数量、提高分子遗传图谱的饱和度、抗逆性QTL的定位以及中国本土暖季型草坪草资源开发利用等方面,是我国今后草坪草分子遗传图谱构建研究的重要发展方向。

Abstract: In agriculture, early-senescence of plant leaves is one of the important factors limiting the yield of grasses and other crops. It is would be useful to elucidate the molecular mechanisms of leaf senescence to enable the establishment of suitable senescing-delaying cultivation techniques in grass production. The productivity and quality of grass species and other crops could thus be further improved. Some studies have found that the initiation of senescence, changes of biochemical metabolic reactions and physiological processes combined with senescence, and modifications in the phenotypes of plants during plant senescence, were all due to the specific and programmed expressions of a group of genes related to plant senescence. There are also distinct coordination networks of expression and regulation among the senescent-related genes during the progress of plant senescence. In this paper, the cloning, functional classification, expression and regulation of senescence-related genes in plants, and progress in genetic engineering for delaying plant senescence are reviewed, with the purpose of providing a reference for improving the yield and quality of grass species and of other crops in the future by regulating the pathway of plant senescence.

中图分类号:

郑轶琦,刘建秀. 草坪草分子遗传图谱的构建与应用研究进展[J]. 草业学报, 2009, 18(1): 155-170.

ZHANG Hai-na, GU Jun-tao, GUO Cheng-jin, LI Cun-dong, XIAO Kai. The basis of molecular biology of senescence in plants[J]. Acta Prataculturae Sinica, 2009, 18(1): 155-170.

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