畜牧与饲料科学 ›› 2025, Vol. 46 ›› Issue (2): 37-42.doi: 10.12160/j.issn.1672-5190.2025.02.005

• 草业科学 • 上一篇    下一篇

不同浓度生根粉及处理时间对紫花苜蓿水培扦插生根效果的影响

董佳乐, 朱文煜, 吕良尧, 刘国豪, 贾玉萍, 王玉祥   

  1. 新疆农业大学草业学院/西部干旱荒漠区草地资源与生态教育部重点实验室/新疆草地资源与生态实验室,新疆 乌鲁木齐 830052
  • 收稿日期:2025-02-11 发布日期:2025-07-09
  • 通讯作者: 王玉祥(1980—),男,教授,博士,博士生导师,主要从事牧草遗传育种与生产研究工作。
  • 作者简介:董佳乐(2003—),男,所学专业为草业科学。
  • 基金资助:
    2025年新疆维吾尔自治区财政林草专项资金(种苗培育补助-新疆农业大学三坪牧草及草坪草自治区草); 新疆维吾尔自治区饲草产业技术体系(XJARS-13-04)

Effects of Different Concentrations of Rooting Powder and Treatment Durations on the Rooting Performance of Hydroponic Cuttings of Medicago sativa

DONG Jiale, ZHU Wenyu, LYU Liangyao, LIU Guohao, JIA Yuping, WANG Yuxiang   

  1. College of Grassland Science, Xinjiang Agricultural University/Key Laboratory of Grassland Resources and Ecology of Western Arid Desert Region, Ministry of Education/Xinjiang Laboratory of Grassland Resources and Ecology, Urumqi 830052,China
  • Received:2025-02-11 Published:2025-07-09

摘要: [目的]基于水培扦插技术,探究ABT生根粉浓度、浸泡时间及培养时间对紫花苜蓿扦插生根效果的影响。[方法]试验设置3种生根粉浓度(200、500、800 mg/L,标记为A1、A2、A3)和3个浸泡时长(10、30、60 s,标记为B1、B2、B3),通过浓度与时间的全组合形成9个处理组(记作A1B1、A1B2、A1B3、A2B1、A2B2、A2B3、A3B1、A3B2、A3B3),并以自来水处理作为对照(记为CK),共10种处理方案。分别于第10天、第17天、第24天测定生根率、平均须根数和最长根长等指标,并结合主成分分析(PCA)赋分计算综合生根效果评分。[结果]试验数据表明,第10天时,A2B1处理的生根率最高(23.33%),A2B2平均须根数最多(4.72根/枝),A2B2组合的根长最长(45.88 mm),A1B2处理的综合生根效果评分最高(3.23分);第17天时,A2B1处理的生根率最高(71.11%),A2B2的平均须根数最多(4.61根/枝),A2B1处理的根长最长(164.04 mm),A2B1的综合生根效果评分最高(2.47分);第24天时,A2B1处理的生根率最高(74.45%),A2B2处理的平均须根数最多(5.56根/枝),A3B1的根长最长(237.97 mm),A2B1的综合生根效果评分最高(2.84分)。[结论]苜蓿扦插枝条生根率、根长和平均须根数等指标的变化与生根粉浓度、浸泡时间、培养时间密切相关,不同处理组合下生根效果差异较大,培养10 d综合生根效果最好的是使用200 mg/L ABT生根粉浸泡10 s的处理组合,培养17 d和培养24 d综合生根效果最好的均为使用500 mg/L ABT生根粉浸泡10 s的处理组合。

关键词: 水培扦插, 生根率, 生根数, 最长根长, 综合生根效果, 主成分分析

Abstract: [Objective] To investigate the effects of ABT rooting powder concentration, soaking duration, and cultivation time on the rooting performance of hydroponic cuttings of Medicago sativa using hydroponic cutting techniques. [Methods] The experiment set three rooting powder concentrations (200, 500, 800 mg/L, labeled A1, A2, A3) and three soaking durations (10, 30, 60 s, labeled B1, B2, B3), forming nine treatment combinations through full factorial design (denoted as A1B1, A1B2, A1B3, A2B1, A2B2, A2B3, A3B1, A3B2, A3B3), with tap water treatment as the control (CK), totaling 10 treatment groups. Rooting rate, average number of adventitious roots, and longest root length were measured on days 10, 17, and 24, and a comprehensive rooting performance score was calculated using principal component analysis (PCA)-based scoring. [Results] The results showed that on day 10, the A2B1 treatment had the highest rooting rate (23.33%), A2B2 had the highest average number of adventitious roots (4.72 roots per cutting), A2B2 exhibited the longest root length (45.88 mm), and A1B2 achieved the highest comprehensive rooting performance score (3.23). On day 17, A2B1 had the highest rooting rate (71.11%), A2B2 had the highest average number of adventitious roots (4.61 roots per cutting), A2B1 showed the longest root length (164.04 mm), and A2B1 had the highest comprehensive rooting performance score (2.47). On day 24, A2B1 had the highest rooting rate (74.45%), A2B2 had the highest average number of adventitious roots (5.56 roots per cutting), A3B1 exhibited the longest root length (237.97 mm), and A2B1 achieved the highest comprehensive rooting performance score (2.84). [Conclusion] The rooting rate, root length, and average number of adventitious roots of M. sativa cuttings were closely related to rooting powder concentration, soaking duration, and cultivation time, showing significant differences in rooting performance among treatment combinations. The best comprehensive rooting performance at 10 days was observed with 200 mg/L ABT rooting powder soaked for 10 s, while at 17 and 24 days, the optimal combination was 500 mg/L ABT rooting powder soaked for 10 s.

Key words: hydroponic cutting, rooting rate, number of roots, longest root length, comprehensive rooting performance, principal component analysis

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