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电生理快速定量菜心杂种优势

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本研究以温室培养的14个品种的菜心为材料,测定了饱水与不饱水状态下菜心的基本电生理参数,并基于能斯特(Nernst)方程计算得到叶片相对持水量(LIWHC)、叶片胞内水分转移速率(LIWTR)、叶片胞内持水时间(LIWHT)、叶片营养主动传输能力(NAT)、叶片营养被动传输能力(NPT)、耐低营养能力(RLN)、营养利用效率(NUE)和植物相对代谢活力(MA)等电生理指标,探究其与杂种优势的关系.结果表明,杂交50的胞内水分传输效率均显著低于其他品种的菜心,其RLN和NUE值则显著高于其他品种,但MA则显著高于其他品种.采用隶属函数法对供试品种水分及养分代谢进行综合评价,结果表明,参试的4个品种中,菜心杂交50的综合评价优于其他3个品种.因此,可以通过测定植物的电生理信息来计算水分、养分代谢状况以及植物的相对代谢活力等来鉴定植物的杂种优势.
Electrophysiological Rapid Quantify Heterosis of Flowering Chinese Cabbage
This study was conducted on 14 varieties of flowering Chinese cabbage(Brassica campestris L.ssp.chinensis var.utilis Tsen et Lee)grown in a greenhouse.The basic electrophysiological param-eters of flowering Chinese cabbage were measured under both saturated and unsaturated conditions.The relative leaf intracellular water holding capacity(LIWHC),leaf intracellular water transfer rate(LIWTR),leaf intracellular water holding time(LIWHT),active nutrient transport ability(NAT),passive nutrient transport ability(NPT),low nutrient tolerance(RLN),nutrient utilization efficien-cy(NUE),and plant relative metabolic vitality(MA)of the leaves were then calculated based on the Nernst equation to explore the relationship between electrophysiological parameters and heterosis.The results showed that the hybrid 50 variety had a significantly lower intracellular water transport efficiency compared to other rapeseed varieties.However,its low nutrient tolerance(RLN)and nutri-ent utilization efficiency(NUE)were significantly higher than other varieties.The relative metabolic activity(MA)of plants was also significantly higher than that of other varieties.The comprehensive evaluation of water and nutrient metabolism of the tested varieties using the membership function method showed that among the four varieties tested,the comprehensive evaluation of flowering Chi-nese cabbage hybrid 50 was superior to the other three varieties.Therefore,this study demonstrated that it was possible to determine the heterosis of plants by measuring their electrophysiological infor-mation to calculate their water and nutrient metabolism status,as well as their relative metabolic ac-tivity.

flowering Chinese cabbageheterosiselectrophysiological parameterswater transfer ratenutrient utilization efficiency

韦净、苏跃、王婧、张倩、黄邦连、邢德科、王伟旭、吴沿友

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江苏大学/现代农业装备与技术教育部重点实验室/农业工程学院,江苏镇江 212013

贵州农业职业学院/喀斯特适生作物种质资源保护与检测应用工程技术研究中心,贵阳 551400

江苏中芯种业科技有限公司,江苏张家港 215623

菜心 杂种优势 电生理参数 水分转移速率 营养利用效率

贵州省高层次创新人才"百层次人才"项目贵州省玉米产业技术体系建设项目"技能贵州"行动计划生态农业技术专业教育教学创新团队项目"技能贵州"行动计划苏跃名师工作室等项目

黔科合平台人才[2016]5672GZCYTX2023-01

2024

10.16590/j.cnki.1001-4705.2024.03.055

种子
贵州省种子管理站 贵州省种子学会 中国种子协会

种子

CSTPCD北大核心
影响因子：0.502
ISSN：1001-4705
年,卷(期)：2024.43(3)
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