摘要
阐述了烟草根系特性、发育机理及其不同养分对根系生长的影响。侧根和不定根是烟草根系的重要组成部分;烤烟根系发育过程主要分为侧根原基特化、侧根原基形成及生长点活化、侧根生长等,并伴有一系列基因表达调控过程;不同元素养分(大量、中量及微量元素)都会影响烟草根系的生长,而中量及微量元素的相关研究相对较少,有待于更深入的研究。提出了应该加强烟草根系发育机理研究,并针对中微量元素及活性物质对烟草根系生长发育的影响研究进行了展望。
This paper reviews tobacco root characteristics, developmental mechanism and different nutrients＇ effects on root system growth. Lateral and adventitious roots are primary parts of tobacco roots. The process of tobacco root development mainly involves the specialization and formation of lateral root primordia, and the activation of apical growing point, with the expression and regulation of a series of genes. The nutrients including macro-, secondary and micro-element can influence the tobacco root growth, and there have been relatively few studies on the secondary and micro-element effects on its growth. And the paper suggests that the needed finther research should be focused on the developmental mechanism of tobacco roots as well as the effects of secondary, micro-element and active compotmds on tobacco root development.
出处
《湖南农业科学》
2015年第6期152-154,共3页
Hunan Agricultural Sciences
关键词
烟草
施肥
养分
根系特征
综述
tobacco
fertilization
nutrient
root characteristic
review
