广东农业科学2026，Vol.53Issue(5)：71-80,10.DOI:10.16768/j.issn.1004-874X.2026.05.006
茎蔓修剪处理对巴戟天脱毒植株生长和肉质根内含物积累的影响
Effects of Stem and Vine Pruning on the Growth and Accumulation of Fleshy Root Constituents in Virus-free Morinda officinalis Plants
摘要
Abstract
[Objective]To clarify the effect of stem and vine pruning on the growth traits and the accumulation of constituents in the fleshy roots of Morinda officinalis How.[Method]This study used rejuvenated virus-free seedlings of the main cultivated variety'Heisuizai'from the Zhaoqing production area as experimental materials,set up two treatments:stem and vine pruning and unpruning.Field experiments were conducted for three consecutive years to observe plant growth indicators and determine the moisture,water-soluble extract,and nystose contents in fleshy roots.[Result]Compared with unpruned plants,stem and vine pruning significantly increased the number of stem branches and the emergence of new leaves.The maximum number of stem branches reached 22.00(±0.82)in pruned plants,compared with 17.00(±1.25)in unpruned plants;the stem diameter increased by 28.00％at 1 080 days;and the total number of leaves increased by 89.08％at 720 days.The later-stage chlorophyll content(SPAD value)was also significantly increased(P＜0.05).However,the leaf area of pruned plants was significantly lower than that of unpruned plants at 360～1 080 days(P＜0.05).Stem and vine pruning significantly induced the occurrence and enlargement of secondary and tertiary tillering roots.Compared with unpruned plants,the numbers of secondary and tertiary tillering roots at 1 080 days increased by 56.45％and 49.81％,respectively,and the fresh and dry weights of the underground parts increased by 28.00％and 27.00％.The harvest measurements at 1 080 days showed that the moisture,water-soluble extract,and nystose contents in the dried fleshy roots of pruned plants were 11.00％,68.40％,and 4.60％,respectively,while those in unpruned plants were 10.40％,73.30％,and 6.20％,respectively.The moisture,water-soluble extract,and nystose contents in the fleshy roots of both treatments were significantly higher than the pharmacopoeial standards.[Conclusion]Therefore,timely stem and vine pruning of virus-free M.officinalis plants can break apical dominance and induce the occurrence and enlargement of tillering roots.This practice effectively promoted root development and fleshy root biomass accumulation,thereby improving the yield and medicinal geoherbal quality of M.officinalis medicinal materials.关键词
巴戟天/茎蔓修剪/生长性状/耐斯糖/脱毒植株/中国南药Key words
Morinda officinalis/stem and vine pruning/growth traits/nystose/virus-free seedlings/Chinese southern medicine分类
农业科技引用本文复制引用
邵玲,吴雅琪,廖舒婷,许腾骏,李红艳,何伟良..茎蔓修剪处理对巴戟天脱毒植株生长和肉质根内含物积累的影响[J].广东农业科学,2026,53(5):71-80,10.基金项目
广东省科技成果入县达镇促进城乡区域协调发展专项(2025B0202010052) （2025B0202010052）
广东省"百千万工程"农村科技特派员第二轮重点派驻项目(KTP20240673) （KTP20240673）
肇庆学院大学生创新创业训练计划项目(X202610580117S) （X202610580117S）
肇庆市高要区广东省农业科技园区培育南药区域公用品牌及产业创新创业主体项目(KJ20240407H044) （KJ20240407H044）
