Evaluation of Growth Rate and DNA Fingerprint Construction of Mutated Progenies from Bermudagrass

doi:10.11733/j.issn.1007-0435.2024.02.008

Acta Agrestia Sinica ›› 2024, Vol. 32 ›› Issue (2): 419-425.DOI: 10.11733/j.issn.1007-0435.2024.02.008

Evaluation of Growth Rate and DNA Fingerprint Construction of Mutated Progenies from Bermudagrass

CHEN Jing-bo^1,2, ZHANG Xiao-xiao^1,2, LI Dan-dan^1,2, LI Jian-jian^1,2, WANG Hao-ran^1,2, LIU Jian-xiu^1,2, GUO Hai-lin^1,2

1. Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing, Jiangsu Province 210014, China;
2. Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing, Jiangsu Province 210014, China

Received:2023-08-28 Revised:2023-11-10 Online:2024-02-15 Published:2024-03-06

狗牙根诱变后代生长速度评价及DNA指纹图谱构建

陈静波^1,2, 张笑笑^1,2, 李丹丹^1,2, 李建建^1,2, 王浩然^1,2, 刘建秀^1,2, 郭海林^1,2

1. 江苏省中国科学院植物研究所(南京中山植物园), 江苏南京 210014;
2. 江苏省植物资源研究与利用重点实验室, 江苏南京 210014

通讯作者: 郭海林,E-mail:ghlnmg@sina.com
作者简介:陈静波(1977-),男,汉族,浙江余姚人,博士,副研究员,主要从事草坪草遗传育种和抗逆机制研究,E-mail:chenjb19@163.com
基金资助:
江苏省林业科技创新与推广项目（LYKJ[2021]19）；国家自然科学基金项目（32271758）资助

Abstract

Abstract: Bermudagrass (Cynodon dactylon) is a prevalent warm-season grass. Mutation technology offers a rapid method for selecting new superior varieties. This study used 12 mutated progenies from the nationally approved ‘Yangjiang’ bermudagrass variety,obtained through ⁶⁰Co-γ radiation mutagenesis treatment. The growth rate was evaluated,and a DNA fingerprint was constructed using sequence-related amplified polymorphism (SRAP) molecular marker technology. The results showed that there were significant variations in the total stolon length,aboveground dry weight,stolon number,and underground dry weight among the mutated progenies. Membership function analysis was performed on these four indicators to comprehensively evaluate the growth rate of the mutated progenies. The growth rate,from fastest to slowest,is M37>M16>M1>M25>M10>M18>M28>M29>M26>‘Yangjiang’>M22>M31>M4. Twelve pairs of SRAP primers were used to construct fingerprint maps of 12 mutated progenies and 6 main bermudagrass varieties. It was found that 7 pairs of primer combinations could directly and accurately identify 18 test materials. This study provides a reliable experimental basis for the breeding and protection of new domestic bermudagrass varieties.

Key words: Bermudagrass, ⁶⁰Co-γ radiation-induced mutation, Growth rate, SRAP, Fingerprint

摘要： 狗牙根（Cynodon dactylon）是一种常见的暖季型草，利用诱变技术处理现有品种进行改良，是快速选育优良新品种的一种途径。本研究以国审品种‘阳江’狗牙根通过⁶⁰Co-γ辐射处理获得的12个诱变后代为材料，进行生长速度评价和基于序列相关的扩增多态性（SRAP）分子标记技术的DNA指纹图谱构建。结果表明，诱变后代间匍匐茎总长度、地上部分干重、匍匐茎数量、地下部分干重等4个指标均存在显著的变异。对这4个指标进行隶属函数分析，对诱变后代的生长速度进行综合评价，认为其生长速度由快到慢依次为M37>M16>M1>M25>M10>M18>M28>M29>M26>‘阳江’>M22>M31>M4。利用12对SRAP引物对12个诱变后代和6个狗牙根主栽品种进行指纹图谱构建，其中7对引物组合可以直接对18份参试材料进行准确鉴定。本研究为进一步国产狗牙根新品种的选育和保护提供了可靠的实验依据。

关键词: 狗牙根, ⁶⁰Co-γ辐射诱变, 生长速度, SRAP, 指纹图谱

CLC Number:

S330.2

CHEN Jing-bo, ZHANG Xiao-xiao, LI Dan-dan, LI Jian-jian, WANG Hao-ran, LIU Jian-xiu, GUO Hai-lin. Evaluation of Growth Rate and DNA Fingerprint Construction of Mutated Progenies from Bermudagrass[J]. Acta Agrestia Sinica, 2024, 32(2): 419-425.

陈静波, 张笑笑, 李丹丹, 李建建, 王浩然, 刘建秀, 郭海林. 狗牙根诱变后代生长速度评价及DNA指纹图谱构建[J]. 草地学报, 2024, 32(2): 419-425.

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Evaluation of Growth Rate and DNA Fingerprint Construction of Mutated Progenies from Bermudagrass

狗牙根诱变后代生长速度评价及DNA指纹图谱构建

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