| 源库调节对灌溉与旱地小麦开花后光合产物生产和分配的影响 |
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| 引用本文： | 王振林,贺明荣.源库调节对灌溉与旱地小麦开花后光合产物生产和分配的影响[J].作物学报,1999,25(2):162-168. |
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| 作者姓名： | 王振林 贺明荣 |
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| 作者单位： | 山东农业大学农学系，山东泰安，271018 |
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| 摘 要： | 灌溉条件下，减源可使小麦叶片光合速率增加，减库光合速率降低。增降幅度因品种而异。鲁215953、山农48-2,鲁麦14和莱州953等品种减源后光合速率增加较少，但减库后光合速率明显降低;鲁麦15、核生2 , D041和太780等品种则相反。旱地无灌溉条件下，无论源或者库的调节对小麦叶片光合速率的影响都比较小。说明源库与光合速率之
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| 关 键 词： | 小麦 源库 光合 物质分配 |
| 收稿时间： | 1998-01-25 |
| 修稿时间： | 1998-09-11 |
Effects of Source Sink Manipulation on Production and Distribution of Photosynthate after Flowering in Irrigated and Rainfed Wheat |
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| Wang Zhenlin He Mingrong Fu Jinmin Tian Qizuo Yin Yanping Cao Hongming.Effects of Source Sink Manipulation on Production and Distribution of Photosynthate after Flowering in Irrigated and Rainfed Wheat[J].Acta Agronomica Sinica,1999,25(2):162-168. |
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| Authors: | Wang Zhenlin He Mingrong Fu Jinmin Tian Qizuo Yin Yanping Cao Hongming |
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| Institution: | Agronomy Department, Sharulong Agricultural University, Tai'an, Shandong, 271018 |
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| Abstract: | Source abatement decreased leaf net photosynthetic rate(Pn) and sink abatement increased Pn of irrigated wheat. However, the decreased or increased magnitude varied among genotypes. Decreasing source of the cultivars Lu215953, Shannong 48-2, Lumai 14, and Laizhou 953 induced less increment of Pn, but decreasing sink did significant declining. However, Lumai 15, Hesheng 2, D041 and Tai 780 have shown less decrement (significant addition) effects of source (sink) abatement on Pn. Source or sink manipulation influenced slightly Pn of rainfed wheat. This indicated the conspicuous effects of environmental factors, especially water, besides genotypes on Pn. Source abatement could enhanced the translocation of photosynthate into grains of the irrigated wheat. However, cv. Lumai 215953 increased more evidently than Lumai 15 did. Sink abatement had little effects on the translocation of photosynthate into grainsof Lumai 15, but decreased the translocation of photosynthate into grains and increased it into stem of cv. Lumai 215953. The production and distribution of photosynthates were very sensitive to source abatement in rainfed wheat. The source abatement lessened the distribution of photosynthates in the upper parts (including grains) of plant. Very little effects of sink abatement on the production of photosynthates occurred in rainfed wheat. This showed that grain sink size was not a factor limiting the production of photosynthates, but regulated the distribution of photosynthates. Sink abatement decreased translocation of photosynthates into grains and increased it in upper parts of the plant. |
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| Keywords: | Triticum aestivum L Source sink relation Photosynthesis Distribution of pho-tosynthates |
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