粗缩病对玉米产量和籽粒品质的影响

穆西玉, 赵延明, 张海艳*
青岛农业大学农学与植物保护学院, 山东省旱作农业技术重点实验室, 山东青岛266109

通信作者:张海艳;E-mail: hyzhang608@126.com;Tel: 0532-86080447

摘 要:

以6个对玉米粗缩病(MRDV)表现不同抗性的玉米品种为材料, 研究了粗缩病对玉米产量性状和籽粒品质的影响。结果表明, 在供试品种中, ‘青农105’和‘青农8’为抗病品种, ‘登海3622’和‘农大108’为中抗品种, ‘先玉335’和‘郑单958’为感病品种。感病后, 玉米果穗穗长、行粒数、穗粒重和产量显著降低, 且损失程度表现为抗病品种<中抗品种>感病品种; 籽粒中粗淀粉含量显著降低, 粗蛋白含量升高, 粗脂肪含量变化不明显。回归分析表明, 通过病情指数可以准确预测玉米粗缩病导致的产量损失。

关键词:玉米; 粗缩病; 产量; 籽粒品质

收稿:2013-05-19   修定:2013-10-09

资助:青岛市科技计划项目[11-2-4-5-(8)-jch]、国家自然科学基金项目(31101100)、作物生物学国家重点实验室开放课题项目(2013KF05)、山东省农业科技成果转化资金(2011)和山东省泰山学者建设工程项目。

Effects of Maize Rough Dwarf Virus (MRDV) on Yield and Kernel Quality of Maize (Zea mays L.)

MU Xi-Yu, ZHAO Yan-Ming, ZHANG Hai-Yan*
College of Agronomy and Plant Protection/Shandong Key Laboratory of Dry Farming Technique, Qingdao Agricultural University, Qingdao, Shandong 266109, China

Corresponding author: ZHANG Hai-Yan; E-mail: hyzhang608@126.com; Tel: 0532-86080447

Abstract:

Six maize (Zea mays) varieties with different resistance to maize rough dwarf virus (MRDV) were used to study the effects of MRDV on maize yield and kernel quality. The results showed that ‘QN105’ and ‘QN8’, ‘DH3622’ and ‘ND108’, and ‘XY335’ and ‘ZD958’ were resistant, moderately resistant and susceptible to MRDV, respectively. After the plants were infected with MRDV, ear length, kernel number per row, kernel weight per ear and kernel yield decreased significantly, and the loss rate appeared resistant varieties susceptible varieties. Comparing with healthy plants, starch content and protein content in diseased plants decreased and increased significantly, respectively. Fat content had no significant difference between healthy and diseased plants. Regressive analysis indicated that maize yield loss caused by MRDV can be predicted accurately through disease index.

Key words: maize; MRDV; yield; kernel quality

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