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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (23): 121-125.

所属专题： 小麦

• 农学 农业基础科学 • 上一篇    下一篇

小麦不同器官碳同位素分辨率与产量的相关性研究

李树华 许兴 张艳铃 景继海 朱林 雍立华 王娜 白海波 吕学莲   

  • 收稿日期:2010-05-04 修回日期:2010-07-04 出版日期:2010-12-05 发布日期:2010-12-05

Study on relationship between carbon isotope discrimination and yield in different organ of wheat

  • Received:2010-05-04 Revised:2010-07-04 Online:2010-12-05 Published:2010-12-05

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摘要：

以20个西北地区小麦地方品种和育成品种(系)为试验材料，在宁夏地区有限灌溉条件和雨养条件下，于2006—2008年连续3年研究了各品种旗叶、籽粒、茎秆的碳同位素分辨率（△13C值）及其与产量的相关性。结果显示：有限灌溉条件下，基部茎秆的△13C与产量的正相关3年均达到了极显著水平；籽粒△13C与产量的正相关有2年达到了极显著水平，另外1年相关不显著；叶片的△13C与产量的正相关只有2008年达到了显著水平，另外2年的相关不显著。而雨养条件下叶片、籽粒和基部茎秆的△13C与产量的相关都不显著，但从不同品种的△13C和产量结果发现低△13C材料在雨养条件下具有较高的产量。因此在本研究有限灌溉条件下利用碳同位素分辨率作为小麦产量的鉴定指标，其最佳测定器官是成熟期的基部茎秆，雨养条件下的最佳测定器官有待于进一步研究确定。

关键词: 小麦, 小麦, 亚硒酸钠, 喷施, 产量

Abstract:

In order to study the relationship between the yield and carbon isotope discrimination of wheat leaves, grain and stem, some different wheat varieties were grown on two ecological environments (limited irrigation area and rain fed area) in Ningxia from 2006 to 2008. The results showed that : In irrigated agricultural areas, the △13C of wheat stem and yield were related to a significant level for 3 years; The △13C of wheat grain and yield were related to a significant level for 2 years, Another one-year of no significant correlation; The △13C of wheat leaves and yield were related to a significant level only in 2008, Another two years of no significant correlation. But in rain fed condition, the △13C of wheat leaves, grain and stem were not correlated positively with yield, and the lower △13C materials have higher yield of different wheat varieties. Therefore, the carbon isotope discrimination of wheat can be an Identification index in irrigated agricultural areas, and wheat stem in the mature is the best organ for determination, The best organ for determination in rain fed condition need to be further studied.