[1]李艳,马丽媛,张冠智,等.暗前远红光对南瓜幼苗下胚轴生长的影响[J].北方园艺,2023,(10):16-23.[doi:10.11937/bfyy.20223705]
　LI Yan,MA Liyuan,ZHANG Guanzhi,et al.Effects of End of Day Far-Red Light on Hypocotyl Growth of Pumpkin Seedlings[J].Northern Horticulture,2023,(10):16-23.[doi:10.11937/bfyy.20223705]

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暗前远红光对南瓜幼苗下胚轴生长的影响

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 期数: 2023年10 页码: 16-23 栏目: 出版日期: 2023-05-30

Title:: Effects of End of Day Far-Red Light on Hypocotyl Growth of Pumpkin Seedlings

作者:: 李艳; 马丽媛; 张冠智; 李洋; 武永军; 杨振超; 李艳,马丽媛,张冠智,李洋,武永军,杨振超

Author(s):: LI Yan; MA Liyuan; ZHANG Guanzhi; LI Yang; WU Yongjun; YANG Zhenchao; (College of Horticulture，Northwest Agriculture and Forestry University，Yangling，Shaanxi 712100)

关键词:: 南瓜; 幼苗; 下胚轴; 暗前远红光; 形态调控

Keywords:: pumpkin; seedling; EOD-FR; morphological regulation

DOI:: 10.11937/bfyy.20223705

文献标志码:: A

摘要:: 以2个南瓜砧木（“金砧木”“日本雪松”）和一个南瓜品种（“蜜本南瓜”）为试材，待幼苗2片子叶展平时，每天19：30分别添加0、1、2、4、6 mmol?m-2?d-1和8 mmol?m-2?d-1剂量的暗前远红光，研究了不同剂量暗前远红光对不同南瓜幼苗下胚轴伸长生长、形态发育以及色素含量的影响，以期为远红光在设施南瓜栽培和嫁接中的利用提供参考依据。结果表明：3种南瓜幼苗的下胚轴长度随着远红光剂量的增大而增加，其中“金砧木”和“日本雪松”幼苗下胚轴长度在远红光剂量为4 mmol?m-2?d-1时接近饱和，而“蜜本南瓜”幼苗的下胚轴长度在远红光剂量为2 mmol?m-2?d-1时就接近饱和，但是不同剂量暗前远红光对幼苗的干物质积累和壮苗指数影响不显著。综上所述，添加适宜剂量的暗前远红光可以在不影响壮苗指数的前提下增加幼苗的下胚轴长度，有利于提高嫁接成活率。

Abstract:: Two pumpkin rootstocks (‘Golden rootstock’ and ‘Japanese Cedar’) and one pumpkin variety (‘Miben Pumpkin’) were used as test materials.When the two cotyledon of seedlings were normal，the dose of 0,1,2,4，6 mmol?m-2?d-1 and 8 mmol?m-2?d-1 EOD-FR was added at 19:30 every day.The effects of different doses of EOD-FR on hypocotyl elongation，morphological development and pigment content of different pumpkin seedlings were studied,in order to provide reference for the use of far-red light in the cultivation and grafting of pumpkin in facilities.The results showed that the hypocotyl length of the three pumpkin seedlings increased with the increase of the far-red light dose.The hypocotyl length of the ‘Golden Rootwood’ and ‘Japanese Cedar’ seedlings was close to saturation at the far-red light dose of 4 mmol?m-2?d-1，and the hypocotyl length of the ‘Miben pumpkin’ seedlings was close to saturation at the far-red light dose of 2 mmol?m-2?d-1.However，different doses of EOD-FR had no significant effect on dry matter accumulation and seedling strength index.In conclusion，the addition of appropriate dose of EOD-FR can increase the hypocotyl length of seedlings without affecting the strong seedling index，which is conducive to improving the survival rate of grafting.

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备注/Memo

第一作者简介：李艳（1998-），女，硕士研究生，研究方向为远红光对植物形态调控。E-mail：lyshitangy@163.com.责任作者：杨振超（1976-），男，博士，副教授，现主要从事设施光环境等研究工作。E-mail：yangzhenchao@126.com.基金项目：陕西省技术创新引导专项资助项目（2021QFY08-02）；2021年陕西省千亿级设施农业专项资助项目（k3030821094）；西藏自治区科学技术厅2022年度中央引导地方科技发展资金项目（XZ202202YD0002C）。收稿日期：2022-09-08

更新日期/Last Update: 2023-06-27