Liu Xiaobing S .J .H erbert Jin Jian Zhang Qiuying Li Yanhua Wang Guanghua.LIGHT ENRICHMENT AND ITS INTERACTIONS WITH SOURCE-SINKALTERATION ON YIELD AND YIELD COMPONENTS IN SOYBEAN[J].Soybean Science,2006,25(01):6-10.[doi:10.11861/j.issn.1000-9841.2006.01.0006]
增加光照及其与改变源库互作对大豆产量构成因素的影响＊
- Title:
- LIGHT ENRICHMENT AND ITS INTERACTIONS WITH SOURCE-SINKALTERATION ON YIELD AND YIELD COMPONENTS IN SOYBEAN
- Keywords:
- Soybean ; Light enrichment ; Source-sink alterations ; Yield components
- 文献标志码:
- A
- 摘要:
- 生殖生长期间的光照强度是决定大豆产量的关键环境因素 。在美国麻省和中国黑龙江两地,通过在不同时期 ,对不同密度的大豆群体进行增加光照和改变源库处理 ,研究了两地产量及产量构成因素对增加光照光变化的反应。结果表明 ,不同时期增加光照光处理的增产效果不同 ,开花初期和结荚初期增加光照最为明显 ,花期增加光照增加单株荚粒数,而结荚初期增加光照增加百粒重。鼓粒期增加光照处理 ,百粒重不同品种在不同密度条件下增产不显著 ,说明鼓粒期后的光照条件对大豆产量及百粒重的调节有限。在不同的光照条件下 ,源库在产量形成中的作用不同。在自然光照条件下, 剪叶处理产量下降幅度较去荚大, 即源在产量形成中更加重要些, 而在花期的增加光照处理条件下 ,库也成为影响产量的重要因子, 可见 ,光照条件在源库关系中起着显著的协调作用。
- Abstract:
- Light intensity during the reproductive period is the key environmental factor determining soy-bean yield .Responses of yield and yield components to light enrichment under varied population treatedwith different light enriched stages and source -sink alterations w ere investigated in the US and China . The yield increase effects differed among the light enriched stages .Early flow ering and pod set stages w ere the critical stages to increase yield by light enrichm ent .The increased yield by light enrichment at flow er-ing w as mainly due to the increase in pod number , w hile at pod set stage it w as mainly due to the increase in seed size .No significant yield increase w as found at seed fill stage by light enrichment for cultivars diffe-ring in seed size or grow n at different populations .This indicates that the regulation of light enrichment in-itiated at seed fill on yield and seed size is rather limited .Source/sink played different roles in yield forma-tion under various light regimes .Under natural light conditions , source played a very impor tant role be-cause leaf rem oval reduced greater yield com pared w ith that of pod rem oval .Sink also became an important yield -limiting factor w hile light enriched conditions were applied .It is proposed that light regimes have a significant regulatory function in source-sink relationship .
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备注/Memo
项目来源:本研究是美国农业部(USDA)的教育项目及其麻省大学和中科院东北地理与农业生态所合作项目的部分内容。作者简介:刘晓冰(1963 -), 男, 博士, 研究员, 主要从事作物生理生态研究。