De novo hydroponics system efficiency for the cuttings of alfalfa (Medicago sativa L.)

文献类型： 外文期刊

第一作者： Zhao, Zhili

作者： Zhao, Zhili;Wang, Zeng-Yu;Zhang, Wenyu;Liu, Yang;Li, Shuai;Yao, Wu;Sun, Xiaohui;Li, Siyu;Ma, Lichao;Sun, Juan;Yang, Guofeng;Wang, Zeng-Yu;Cong, Lili;Yang, Qingchuan;Li, Yongxiang

作者机构： Hunan Agr Univ, Coll Agron, Changsha 410128, Peoples R China;Qingdao Agr Univ, Coll Grassland Sci, Grassland Agri Husb Res Ctr, Qingdao 266109, Peoples R China;Chinese Acad Agr Sci, Inst Anim Sci, Beijing 100193, Peoples R China;Qingdao Empyrean Intelligent Agr Grp Co Ltd, Qingdao 266109, Peoples R China

关键词： Alfalfa; Hydroponic; Cutting propagation; Rooting rate

期刊名称：PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS （ 2019影响因子：2.005； 五年影响因子：2.016 ）

ISSN： 0971-5894

年卷期：

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收录情况： SCI

摘要： The legume plant alfalfa (Medicago sativa L.) is a widely cultivated perennial forage due to its high protein content, palatability, and strong adaptability to diverse agro-ecological zones. Alfalfa is a self-incompatible cross-pollinated autotetraploid species with tetrasomic inheritance. Therefore, maintaining excellent traits through seed reproduction is a prime challenge in alfalfa. However, the cutting propagation technology could enable consistent multiplication of quality plants that are genetically identical to the parent plant. The current study aimed to develop a simple, cost-effective, reproducible, and efficient hydroponic cutting method to preserve alfalfa plants and for molecular research. In this study, alfalfa landrace 'Wudi' was grown in hydroponics for 30 days and used as source material for cuttings. The top, middle and bottom sections of its stem were used as cuttings. The rooting rate, root length, and stem height of the different stem sections were compared to determine the best segment for alfalfa propagation in four nutrient treatments (H-M, H-M + 1/500H, H-M + 1/1000H and d H-M + 1/2000H). After 21 days of culture, the rooting rates of all the three stem types under four cutting nutrient solutions were above 78%. The rooting rate of the middle and bottom parts in H-M + 1/1000 H and H-M + 1/2000 H nutrient solutions reached more than 93%, with a higher health survey score (> 4.70). In conclusion, this study developed a de novo cutting propagation method that can be used to conserve and propagate germplasm in breeding programs and research. This method is a new report on the cutting propagation of alfalfa by hydroponics, which could supplement the existing cutting propagation methods.

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