1.江西农业大学国土资源与环境学院/江西省农业废弃物资源化利用与面源污染防控产教融合重点创新中心,南昌330045
2.江西省植保植检站,南昌 330096
3.江西省烟草科学研究所,南昌 330025
徐文英,E-mail:18370415921@163.com
赵尊康,E-mail:zhaozk2019@jxau.edu.cn
收稿:2025-07-07,
纸质出版:2025-09-15
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XU Wenying,LIU Liang,ZHANG Kun,et al.Evaluation of magnesium efficiency in natural populations of oilseed rape at stage of seedling and screening of elite germplasm with high magnesium efficiency[J].Journal of Huazhong Agricultural University,2025,44(05):69-79.
徐文英,刘良,张昆,等.甘蓝型油菜自然群体苗期镁效率评价及镁高效优异种质筛选[J].华中农业大学学报,2025,44(5):69‐79. DOI: 10.13300/j.cnki.hnlkxb.2025.05.007.
XU Wenying,LIU Liang,ZHANG Kun,et al.Evaluation of magnesium efficiency in natural populations of oilseed rape at stage of seedling and screening of elite germplasm with high magnesium efficiency[J].Journal of Huazhong Agricultural University,2025,44(05):69-79. DOI: 10.13300/j.cnki.hnlkxb.2025.05.007.
为筛选甘蓝型油菜镁高效品种,研究油菜镁高效分子机制,以甘蓝型油菜自然群体90个品种为材料,采用苗期营养液培养两步筛选法,考查群体在低镁和镁正常处理下鲜物质量、干物质量、根冠比和镁累积量等10个性状,利用相关性分析、聚类分析、综合评价分析法对90个品种进行镁效率的综合评价并筛选镁高效品种。结果显示,90个油菜品种在2个镁处理下10个性状均呈显著差异,变异系数为14.8%~82.94%,且10个性状的耐低镁系数均呈显著正相关;以镁正常条件下干物质生物量和镁效率系数为主要评价指标,将90个品种分为4个类型,分别为高效低敏感型(14个)、高效高敏感型(21个)、低效高敏感型(19个)和低效低敏感型(36个)。通过复筛验证最终筛选到甘蓝型油菜镁高效品种W16与W100和镁低效品种W61与W132,可为后续油菜镁高效分子机制研究提供材料。
Screening magnesium (Mg)-efficient germplasm of oilseed rape (
Brassica napus
L.) will provide elite materials for studying molecular mechanism of Mg efficiency in
Brassica napus
.90 varieties of natural population of
B. napus
were used to examine 10 traits of the population including the weight of fresh biomass,the weight of dry biomass,the ratio of root to shoot and the accumulation of Mg under low and normal Mg treatments with the two-step screening method of nutrient solution culture at the stage of seedling to screen magnesium efficient varieties of
B. napus
and study the molecular mechanism of magnesium efficiency in
B. napus
.Correlation analysis,cluster analysis,and comprehensive evaluation analysis methods were used to comprehensively evaluate the magnesium efficiency in 90 varieties and screen magnesium efficient varieties.The results showed that there were significant differences in 10 traits of 90 varieties under 2 magnesium treatments,with a coefficient of variation ranging from 14.8% to 82.94%.The coefficient of low-Mg tolerance of 10 traits was significantly positively correlated.90 varieties were divided into four types including high-efficiency and low sensitivity type (14 varieties),high-efficiency and high sensitivity type (21 varieties),low efficiency and high sensitivity type (19 varieties),and low efficiency and low sensitivity type (36 varieties) based on the weight of dry biomass and the coefficient of magnesium efficiency under normal magnesium conditions as the main indexes for evaluation.The magnesium efficient varieties including W16 and W100 and magnesium inefficient varieties including W61 and W132 of
B. napus
were finally screened out through re-screening verification,which can provide materials for subsequent studies on the molecular mechanism of high magnesium efficiency in
B. napus
.
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