WANG Weijie,ZENG Lin,WANG Fadong,et al.Establishment of in vitro Regeneration System and Tissue Culture Propagation Breeding in Pumpkin[J].Northern Horticulture,2025,(20):1-11.[doi:10.11937/bfyy.20250938]
南瓜离体再生体系建立及组培繁殖育种研究
- Title:
- Establishment of in vitro Regeneration System and Tissue Culture Propagation Breeding in Pumpkin
- 文章编号:
- 1001-0009(2025)20-0001-11
- 分类号:
- S 642.1
- 文献标志码:
- A
- 摘要:
- 以南瓜“北蜜2号”“中栗6号”“甘红栗”为试材,采用组培生物技术,研究了南瓜离体培养、再生诱导和移栽繁殖试验,筛选出最佳的消毒接种方式、外植体、培养基及栽培基质配比,建立适合河西地区的最优南瓜离体再生及组培繁殖技术体系,以期为南瓜遗传转化和优质种质资源创制提供参考依据,也为河西走廊地区南瓜产业高质量发展提供技术支撑。结果表明:经过预处理、剥离种皮后用0.1%HgCl2消毒10 min的南瓜种子水平接种于1/2MS培养基上,发芽率最高且无菌苗生长最好;愈伤组织在不同培养基上的诱导率介于76.80%~95.10%,子叶在MS+6-BA 1.0 mg·L-1+NAA 1.0 mg·L-1培养基上的诱导率最高达到95.10%;不定芽在MS+6-BA 1.0 mg·L-1+NAA 0.50 mg·L-1培养基上的诱导率最高、诱导效果最好;不定根在1/2MS+NAA 1.0 mg·L-1培养基上的生根培养效果最佳,生根率达到76.88%;子叶是诱导南瓜愈伤组织、不定芽、不定根的最佳外植体;组培苗移栽于泥炭土∶蛭石∶珍珠岩=3∶1∶1基质里的繁育效果最佳,幼苗成活率最高达到90.55%。
- Abstract:
- Taking three pumpkin varieties (‘Beimi No.2’‘Zhongli No.6’,and ‘Ganhongli’) as experimental materials,in vitro culture,regeneration induction,and transplantation propagation were systematically investigated though tissue culture biotechnology.The optimal technology system of pumpkin in vitro regeneration and tissue culture propagation for Hexi area was established through screening out the optimal disinfection inoculation method,explant,culture medium and cultivation matrix ratios,in order to provide reference for pumpkin genetic transformation and high-quality germplasm resources creation,and technical support for the high-quality development of pumpkin industry in Hexi Corridor.The results showed that the pumpkin seeds were pretreated and peeled,then disinfected with 0.1%HgCl2 for 10 minutes and inoculated horizontally on 1/2MS medium,thus obtained the highest germination rate and optimal growth of sterile seedlings.The induction rate of callus on different media was between 76.80% and 95.10%,and the induction rate of cotyledon on MS+6-BA 1.0 mg·L-1+NAA 1.0 mg·L-1 medium was the highest (95.10%).Adventitious buds on MS+6-BA 1.0 mg·L-1+NAA 0.50 mg·L-1 medium showed the highest induction efficiency.The rooting culture effect of adventitious roots on 1/2MS+NAA 1.0 mg·L-1 medium was the best,and the rooting rate reached 76.88%.Cotyledons were identified as the optimal explants for inducing pumpkin callus,adventitious buds and roots.The tissue culture seedlings transplanted in peat soil∶vermiculite∶perlite=3∶1∶1 substrate exhibited the optimal growth performance and highest survival rate (90.55%).
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备注/Memo
第一作者简介:王蔚杰(1989-),男,硕士,农艺师,现主要从事作物育种与蔬菜栽培等研究工作。E-mail:1139420117@qq.com.责任作者:曾琳(1974-),女,本科,高级农经师,现主要从事蔬菜选育与农业经济管理等研究工作。E-mail:123117145@qq.com.基金项目:国家重点研发计划资助项目(SQ2024YFD2300022);甘肃省青年科技基金资助项目(23JRRC0002);金昌市重点人才资助项目(RC2025A001)。收稿日期:2025-03-14