Effect of leaf thinning on shoot growth and tuber yield of white Guinea yam
Mutual leaf shading can inhibit the growth of yam, reducing tuber yield. To improve light utilization, approximately 25% of leaves in a plant were thinned during the period of maximum shoot growth. Shoot dry weight was estimated every two weeks using a non-destructive method. Leaf thinning caused hi...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Informa UK Limited
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/116072 |
| _version_ | 1855536630467657728 |
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| author | Iseki, K. Olaleye, O. Matsumoto, R. |
| author_browse | Iseki, K. Matsumoto, R. Olaleye, O. |
| author_facet | Iseki, K. Olaleye, O. Matsumoto, R. |
| author_sort | Iseki, K. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Mutual leaf shading can inhibit the growth of yam, reducing tuber yield. To improve light utilization, approximately 25% of leaves in a plant were thinned during the period of maximum shoot growth. Shoot dry weight was estimated every two weeks using a non-destructive method. Leaf thinning caused higher shoot growth rates (SGRs) after thinning, while control plants had SGRs close to zero. The higher SGRs in the thinned plants was attributed to an increase in new leaf development. This indicates that the plateau in shoot growth commonly observed during the late growth period is reversible and could be improved artificially. In thinned plants, there was a positive relationship between shoot dry weight and SGR, although no such relationship was observed in control plants after the middle growth period. This positive correlation indicates a higher shoot growth per unit leaf area in the thinned plants than in the control plants, presumably due to improved light utilization and a higher photosynthetic rate of new leaves. However, leaf thinning reduced tuber yields, presumably because of a lower total carbon assimilation per plant and greater growth competition between shoots and tubers. High correlations between shoot dry weight and tuber yield indicated that a high shoot biomass is more important than improving light utilization for increased tuber yields. |
| format | Journal Article |
| id | CGSpace116072 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace1160722024-05-01T08:19:08Z Effect of leaf thinning on shoot growth and tuber yield of white Guinea yam Iseki, K. Olaleye, O. Matsumoto, R. yams dioscorea rotundata shading shoots tubers yields thinning Mutual leaf shading can inhibit the growth of yam, reducing tuber yield. To improve light utilization, approximately 25% of leaves in a plant were thinned during the period of maximum shoot growth. Shoot dry weight was estimated every two weeks using a non-destructive method. Leaf thinning caused higher shoot growth rates (SGRs) after thinning, while control plants had SGRs close to zero. The higher SGRs in the thinned plants was attributed to an increase in new leaf development. This indicates that the plateau in shoot growth commonly observed during the late growth period is reversible and could be improved artificially. In thinned plants, there was a positive relationship between shoot dry weight and SGR, although no such relationship was observed in control plants after the middle growth period. This positive correlation indicates a higher shoot growth per unit leaf area in the thinned plants than in the control plants, presumably due to improved light utilization and a higher photosynthetic rate of new leaves. However, leaf thinning reduced tuber yields, presumably because of a lower total carbon assimilation per plant and greater growth competition between shoots and tubers. High correlations between shoot dry weight and tuber yield indicated that a high shoot biomass is more important than improving light utilization for increased tuber yields. 2022-01-02 2021-11-15T09:07:32Z 2021-11-15T09:07:32Z Journal Article https://hdl.handle.net/10568/116072 en Open Access application/pdf Informa UK Limited Iseki, K., Olaleye, O. & Matsumoto, R. (2021). Effect of leaf thinning on shoot growth and tuber yield of white Guinea yam. Plant Production Science, 1-9. |
| spellingShingle | yams dioscorea rotundata shading shoots tubers yields thinning Iseki, K. Olaleye, O. Matsumoto, R. Effect of leaf thinning on shoot growth and tuber yield of white Guinea yam |
| title | Effect of leaf thinning on shoot growth and tuber yield of white Guinea yam |
| title_full | Effect of leaf thinning on shoot growth and tuber yield of white Guinea yam |
| title_fullStr | Effect of leaf thinning on shoot growth and tuber yield of white Guinea yam |
| title_full_unstemmed | Effect of leaf thinning on shoot growth and tuber yield of white Guinea yam |
| title_short | Effect of leaf thinning on shoot growth and tuber yield of white Guinea yam |
| title_sort | effect of leaf thinning on shoot growth and tuber yield of white guinea yam |
| topic | yams dioscorea rotundata shading shoots tubers yields thinning |
| url | https://hdl.handle.net/10568/116072 |
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