Effect of different treatments on grain weight and protein content of the grains from different ear positions for barley
The effect of agronomic factors on grain weight and protein content of the grains from different ear positions (top, middle and bottom) in barley cultivars 92-11 and Xiumai-3 was studied. It was shown that grain weight of middle-positioned grains was the highest, and that of top-positioned grains wa...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2004-11-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/1008-9209.2004.06.0640 |
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| Summary: | The effect of agronomic factors on grain weight and protein content of the grains from different ear positions (top, middle and bottom) in barley cultivars 92-11 and Xiumai-3 was studied. It was shown that grain weight of middle-positioned grains was the highest, and that of top-positioned grains was the lowest in all different treatments. Meanwhile the difference between two cultivars was significant, 92-11 being higher than Xiumai-3. Timing of nitrogen application significantly affected protein content of the grains from different ear positions, and protein content increased with heavy N application at late stage. The increase was mainly caused by higher protein content in bottom-and middle-positioned grains. In addition, heavy N application at late stage caused a significant increase in middle-and bottom-positioned grain weight. The population size after heading markedly affected grain weight and protein content and, with the increase of spike number, grain weight of bottom-and middle-positioned grains reduced, but their protein content increased. There was a substantial difference between two cultivars in the response of protein content to spike number, and greater changes occurred in bottom positioned grains for 92-11 and in top positioned grains for Xiumei 3. Deletion of middle-positioned grains significantly increased weight of top-positioned grains and removal of flag leaf resulted in the weight reduction of both middle-and bottom-positioned grains. In addition, reduction of both source and sink induced increase in protein content of grains. |
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| ISSN: | 1008-9209 2097-5155 |