小黑麦植株铁、锰、铜、锌含量对氮素反应的品种差异及其类型

草业学报 ›› 2011, Vol. 20 ›› Issue (4): 82-89.

小黑麦植株铁、锰、铜、锌含量对氮素反应的品种差异及其类型

匡艺,李廷轩^*,余海英

四川农业大学资源环境学院,四川雅安 625014

收稿日期:2010-06-08 出版日期:2011-04-25 发布日期:2011-08-20
通讯作者: E-mail:litinx@263.net
作者简介:匡艺(1987-),女,四川内江人,在读硕士。E-mail:kuangyigar@sina.com
基金资助:
国家自然科学基金(40901138),国家科技支撑计划子课题(2008BAD98B03)和四川省教育厅基金项目(07ZB063)资助。

Cultivar differences and classification of responses to nitrogen of Fe, Mn, Cu and Zn contents of triticale plant

KUANG Yi, LI Ting-xuan,YU Hai-ying

College of Resources and Environmental Science, Sichuan Agriculture University, Ya’an 625014, China

Received:2010-06-08 Online:2011-04-25 Published:2011-08-20

摘要/Abstract

摘要： 采用盆栽试验,以31份具有不同遗传背景的小黑麦品种为材料,设置低氮和正常供氮2个氮素水平,探讨小黑麦最佳刈割时期——抽穗期时植株体内铁、锰、铜、锌含量对氮素反应的品种差异及其类型。结果表明,1)不同供氮条件下,小黑麦植株中铁、锰、铜、锌含量以正常供氮条件显著高于低氮条件;相同供氮条件下小黑麦植株中的铁、锰、铜、锌含量存在显著的品种差异,变异系数为14.16%～32.75%;同时各微量元素的含量受供氮水平和氮素水平与品种的互作效应的影响。2)铁、锰、铜、锌含量对氮素反应的敏感性存在差异,以各小黑麦品种的微量元素含量对氮素响应的敏感程度,可将其分为钝感型、中间型和敏感型3种类型。3)相关分析表明,铁含量与地上部生物量相关性不显著,锰、铜、锌含量与植株地上部生物量呈极显著正相关(相关系数分别为0.36,0.43和0.44)。因此,可通过品种与环境的双重调节,实现高产、富含矿质元素的小黑麦饲草种植。

Abstract: To assess cultivar differences in response to nitrogen of Fe, Mn, Cu and Zn contents and their types in triticale (Triticosecale) plants at the optimum cutting stage-heading stage, a potted plant experiment was carried out using two N levels (low and normal N) using 31 triticale cultivars from different origins. 1) Under normal nitrogen supply, Fe, Mn, Cu, Zn contents in triticale plants were significantly higher than those in plants with a low nitrogen supply. There were cultivar variations in Fe, Mn, Cu, Zn contents. Coefficients of variation were 14.16%-32.75%. In addition to the cultivar and N levels, there was a cultivar×N interaction of micronutrient contents. 2) There were also variations in the response of Fe, Mn, Cu, Zn contents in triticale plants. Based on the range and coefficients of variation of Fe, Mn, Cu, Zn contents in triticale under two N levels, the response of Fe, Mn, Cu, Zn contents in triticale plants to N levels could be classified into three types: insensitive, intermediate, and sensitive types.3) Correlation analysis showed that Fe content was not significantly correlated with shoot biomass in triticale but there were significant or highly significant correlations (coefficients of 0.36, 0.43 and 0.44, respectively) between Mn, Cu, Zn contents and shoot biomass in triticale plants. So, the cultivar×environment interaction can be manipulated to reach higher productivity and enrichment of micronutrient in triticale planting and breeding.

中图分类号:

匡艺,李廷轩,余海英. 小黑麦植株铁、锰、铜、锌含量对氮素反应的品种差异及其类型[J]. 草业学报, 2011, 20(4): 82-89.

KUANG Yi, LI Ting-xuan,YU Hai-ying. Cultivar differences and classification of responses to nitrogen of Fe, Mn, Cu and Zn contents of triticale plant[J]. Acta Prataculturae Sinica, 2011, 20(4): 82-89.

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