| 不同筋型小麦籽粒的物质积累特性及其播期调节效应 |
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| 引用本文： | 何丽,尹钧,周苏玫,张春丽.不同筋型小麦籽粒的物质积累特性及其播期调节效应[J].华北农学报,2008,23(2):17-20. |
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| 作者姓名： | 何丽 尹钧 周苏玫 张春丽 |
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| 作者单位： | 河南农业大学,国家小麦工程技术研究中心,河南,郑州,450002 |
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| 基金项目： | 国家科技支撑计划重大项目 |
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| 摘 要： | 选用半冬性小麦强筋品种济麦20、中筋品种豫麦49和弱筋品种郑麦004,研究了籽粒灌浆期间不同筋型小麦的物质积累特点及其播期的调节效应。结果表明,在籽粒形成和成熟期间,弱筋小麦品种郑麦004籽粒灌浆速率分别较强筋品种济麦20和中筋品种豫麦49降低14.1%和24.4%,因而千粒重也分别比2品种平均减少4.87和9.85 g,但籽粒中淀粉的含量增高,表现为郑麦004(82.4%)>豫麦49(80.2%)>济麦20(78.7%),淀粉中直/支比也呈现出同样的趋势。随着播期的推迟,促进了籽粒形成期(花后0~14 d)的灌浆速率,开花21 d后灌浆速率又明显下降;济麦20和豫麦49的千粒重以适播较高;但播期推迟对3种筋型小麦总淀粉含量和直支比均有提高作用,以晚播处理最为显著(p<0.01)。
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| 关 键 词： | 小麦 筋型 物质积累 播期 |
| 文章编号： | 1000-7091(2008)02-0017-04 |
| 修稿时间： | 2007年10月11 |
The Accumulation Characteristics of Grain Matter and Adjusting Effects of Sowing Date in Semi-winter Wheat with Different Gluten Types |
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| HE Li,YIN Jun,ZHOU Su-mei,ZHANG Chun-li.The Accumulation Characteristics of Grain Matter and Adjusting Effects of Sowing Date in Semi-winter Wheat with Different Gluten Types[J].Acta Agriculturae Boreali-Sinica,2008,23(2):17-20. |
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| Authors: | HE Li YIN Jun ZHOU Su-mei ZHANG Chun-li |
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| Abstract: | The matter accumulation characteristics and the moderating effect of sowing date in grain filling stage were studied using three semi-winter wheat varieties with different types of gluten,Jimai 20(strong gluten),Yumai 49(middle gluten)and Zhengmai 004(weak gluten).The results indicated that the grain filling rate of Zhengmai 004 was 14.1% and 24.4% lower than Jimai 20 and Yumai 49,and its 1 000 kernel weight was decreased by 4.87 and 9.85 g,respectively,but its grain starch content was the highest(82.4%),followed by Yumai 49(80.2%)and Jimai 20(78.7%).The ratio of amylose and amylopectin showed the same trend.The postpone of sowing date could promote the grain filling rate during grain formation stage(0-14 d after anthesis),but the grain filling rate declined obviously after 21 d of anthesis.The 1 000 kernel weight of Jimai 20 and Yumai 49 were relatively higher for the second sowing date.Both of the total starch content and the ratio of amlose and amylopectin were inceased by postphoning the sowing date,especially for the last sowing date(p<0.01). |
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| Keywords: | Wheat Different types of gluten Matter accumulation Sowing date |
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