| 苦瓜嫁接砧木对象耳豆根结线虫的抗性鉴定 |
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| 引用本文： | 李荣兰,牛玉,田丽波,杨衍,刘子记.苦瓜嫁接砧木对象耳豆根结线虫的抗性鉴定[J].热带作物学报,2022,43(2):353-360. |
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| 作者姓名： | 李荣兰 牛玉 田丽波 杨衍 刘子记 |
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| 作者单位： | 1.中国热带农业科学院热带作物品种资源研究所,海南海口 5711012.海南大学园艺学院,海南海口 570228 |
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| 基金项目： | 海南省重点研发计划科技合作项目(No.ZDYF2020229);海南省重大科技计划项目(No.ZDKJ2021010);海南省热带园艺作物品质调控重点实验室科研项目[No.HNZDSYS(YY)-03]。 |
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| 摘 要： | 根结线虫是危害农业生产的重要的土传病害之一,其中象耳豆根结线虫在近几年发展成为华南地区的优势种群,防治较为困难,严重影响了苦瓜的产量和品质,生产中较多采用嫁接砧木的防治措施.为筛选抗象耳豆根结线虫的苦瓜砧木品种,以18份苦瓜砧木品种为试验材料,采用盆栽幼苗人工接种象耳豆根结线虫的方法,接种45 d后,测量供试材料的相对...
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| 关 键 词： | 苦瓜砧木 象耳豆根结线虫 抗性鉴定 隶属函数 聚类分析 |
| 收稿时间： | 2021-08-09 |
Resistance Identification of Rootstock for Bitter Gourd Grafting to Meloidogyne enterolobii |
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| LI Ronglan,NIU Yu,TIAN Libo,YANG Yan,LIU Ziji.Resistance Identification of Rootstock for Bitter Gourd Grafting to Meloidogyne enterolobii[J].Chinese Journal of Tropical Crops,2022,43(2):353-360. |
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| Authors: | LI Ronglan NIU Yu TIAN Libo YANG Yan LIU Ziji |
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| Institution: | 1. Tropical Crops Genetic Resource Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China2. College of Horticulture, Hainan University, Haikou, Hainan 570228, China |
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| Abstract: | Root knot nematode is one of the most important soil-borne diseases affecting the development of agricultural production.Meloidogyne enterolobii is the dominant population among root knot nematode in south China in recent years.It is difficult to control and seriously affect the yield and quality of bitter gourd.Therefore,it is of great theoretical significance and production value to take the prevention measure by bitter gourd rootstock and screen the resistant rootstock material,in order to reduce the harm of root knot nematode disease and screen the resistant rootstocks of bitter gourd to M.enterolobii,this study took 18 bitter gourd rootstocks as the materials,the relative growth and resistance indices of 18 bitter gourd rootstocks were measured 45 days after inoculation.The relative growth indexes included plant height,plant weight,stem diameter and root fresh weight;the resistance indexes included gall index,egg granule index,reproduction frequency,and disease index.The comprehensive analysis included clustering analysis and subordinate function analysis.The resistance evaluation of bitter gourd rootstocks to M.enterolobii were conducted combining clustering and subordinate function analysis with different indices.The results can clear and definite showed that there were significant differences in the relative growth and resistance indices of 18 bitter gourd rootstocks after infection by the M.enterolobii.The result of clustering analysis based on the egg granule index with highest coefficient variance was obviously consistent with that based on the four resistance indices.Through comprehensive above evaluation of clustering analysis and subordinate function analysis,18 bitter gourd grafted rootstocks were respective divided into three groups,resistant,susceptible and highly susceptible.Resistant rootstocks included ‘Fenghuang No.3’ ‘Tiemuzhen’ ‘Zhenyouliang 101’ ‘Japanese cedar’ ‘Jinzhen No.1’and ‘Jingxinzhen No.4’.Susceptible rootstocks included ‘Japanese Jinxiutai Wood’ ‘Strong force No.6’ ‘Yueyou No.3’ ‘Disease-resistant Pioneer’ ‘Jingxinzhen No.5’ ‘Korean Jinzhen’ ‘Deli Rootstock’ ‘Shengzhen No.3’ ‘Black seed pumpkin’ and ‘Yuzhu loofah’.The rootstocks with high susceptible are ‘king of omnipotent rootstocks’ and ‘King of green rootstocks’.The grafted bitter gourd of ‘Fenghuang No.3’ ‘Tiemuzhen’ ‘Zhenyouliang 101’ ‘Japanese cedar’ ‘Jinzhen No.1’and ‘Jingxinzhen No.4’ presented better disease resistance and can be used as grafting materials for the bitter gourd.This study,resistance identification of rootstock for bitter gourd grafting to M.enterolobii,were screened out six rootstocks with excellent comprehensive performance,it provides reference for the resistance of M.enterolobii in the actual production and builds a solid foundation for the sustainable development of the bitter gourd industry. |
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| Keywords: | bitter gourd rootstock Meloidogyne enterolobii resistance identification subordinate function clustering analysis |
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