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作物学报 ›› 2013, Vol. 39 ›› Issue (09): 1674-1678.doi: 10.3724/SP.J.1006.2013.01674

• 耕作栽培·生理生化 • 上一篇    下一篇

不同环境及栽培条件下啤用大麦阿拉伯木聚糖含量的变化

张晓勤1,2,薛大伟2,张国平1,*   

  1. 1浙江大学农业与生物技术学院 浙江杭州 310058; 2杭州师范大学生命与环境科学学院 浙江杭州310036
  • 收稿日期:2013-02-14 修回日期:2013-04-22 出版日期:2013-09-12 网络出版日期:2013-07-09
  • 通讯作者: 张国平, E-mail: zhanggp@zju.edu.cn
  • 基金资助:

    本研究由浙江省自然科学基金项目(Y3100074, Z3110054)和杭州市科技发展计划项目(20100933B08)资助。

Changes of Arabinoxylan Content in Malting Barley under Different Environments and Cultivation Conditions

ZHANG Xiao-Qin1,2,XUE Da-Wei2,ZHANG Guo-Ping1,*   

  1. 1 College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China;2 College of Life & Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
  • Received:2013-02-14 Revised:2013-04-22 Published:2013-09-12 Published online:2013-07-09
  • Contact: 张国平, E-mail: zhanggp@zju.edu.cn

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摘要：

阿拉伯木聚糖(AX)含量是影响啤用大麦品质的主要因素之一。利用3个二棱大麦品种，研究了籽粒灌浆期AX含量和内切木聚糖酶活性(EA)的变化动态，以及施氮量、施肥期、种植密度及种植地点对AX含量的影响。结果表明，其3个品种的AX含量和EA在灌浆期变化趋势基本相同，表现为阿拉伯木聚糖总含量(TAX)、非水溶性阿拉伯木聚糖含量(WUAX)和EA在整个灌浆期呈下降趋势，水溶性阿拉伯木聚糖含量(WEAX)比例较低，且呈先增后降的趋势。与其他两品种比较，浙大9号在籽粒灌浆期TAX含量始终较高、EA始终较低。浙大9号籽粒TAX含量在杭州点显著高于在桐乡点，而WEAX含量在桐乡点显著高于在杭州点。播种量、氮肥用量及运筹对桐乡点籽粒TAX和WEAX含量均无显著影响，但在杭州点这3种农艺因子均显著影响WEAX含量。

关键词: 大麦, 灌浆期, 环境, 阿拉伯木聚糖, 内切木聚糖酶

Abstract:

Arabinoxylan (AX) content in barley grains is a principal chemical component affecting malt quality. The changes of arabinoxylan content and endoxylanase activity (EA) in grains during grain filling and their responses to agronomic factors, such as nitrogen rate and application timing, plant density, and growing site, were investigated using two-rowed barley cultivars, Hua 30, Zheda 9, and Zhexiu 12. All that three barley cultivars had the same changing trend in AX content and EA during grain-filling period. Contents of total arabinoxylan (TAX) and water unextractablearabinoxylan (WUAX), and EA declined constantly during grain filling stage, and content of water extractablearabinoxylan (WEAX), a small proportion of TAX, increased at early stage and declined at late stage. When Zheda 9 was planted in Hangzhou and Tongxiang of Zhejiang Province, TAX content in grains was significantly higher in Hangzhou than in Tongxiang, and the opposite was true for WEAX content. The effects of plant density and nitrogen application rate and timing were not significant on both TAX and WEAX contents in Tongxiang, while the effect was significant of these factors on WEAX contents in Hangzhou.

Key words: Barley, Grain filling stage, Environment, Arabinoxylan, Endoxylanase

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