| 增香栽培对香稻香气和产量的影响及其相关生理机制 |
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| 引用本文： | 黄忠林,唐湘如,王玉良,陈慕娇,赵正琨,段美洋,潘圣刚.增香栽培对香稻香气和产量的影响及其相关生理机制[J].中国农业科学,2012,45(6):1054-1065. |
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| 作者姓名： | 黄忠林 唐湘如 王玉良 陈慕娇 赵正琨 段美洋 潘圣刚 |
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| 作者单位： | 1.华南农业大学农学院，广州 510642 |
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| 基金项目： | 国家自然科学基金，高等学校博士学科点专项科研基金，广东省自然科学基金，广东省农业攻关项目，广东省农业标准化项目 |
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| 摘 要： | 【目的】探明增香栽培技术对香稻香气含量和产量形成的影响及其机理。【方法】以常规香稻品种桂香占、美香占2号、中香1号、饶平香为材料进行大田对比试验，设置香稻增香栽培技术与香稻常规栽培技术（对照）2个处理，测定水稻分蘖期、孕穗期、抽穗期和灌浆成熟期的生物学指标、糙米香气2-乙酰基-1-吡咯啉（2-AP）含量、产量及其构成因素。【结果】与常规栽培技术比较，增香栽培技术显著提高了香稻糙米和精米的香气含量，齐穗后剑叶和籽粒的游离脯氨酸含量和脯氨酸氧化酶活性；分蘖期、孕穗期、抽穗期和成熟期的叶片（剑叶）叶绿素含量（SPAD）、叶面积指数（LAI）和地上部分干物质积累量，抽穗至成熟期的茎鞘物质输出率和群体光合势；有效穗数、群体总颖花量、结实率和收获产量，但对千粒重均无显著影响。【结论】增香栽培技术能显著提高香稻叶片和籽粒的游离脯氨酸含量和脯氨酸氧化酶活性，从而显著增加其糙米2-AP的含量；同时增香栽培技术显著提高了香稻生育前中期的地上部分干物质积累和生育后期的茎鞘物质转运率和群体光合能力，从而促进了香稻有效穗数、群体总颖花量、结实率和收获产量的增加，最终表现为增香栽培技术能协同提高香稻糙米和精米的2-AP含量与籽粒产量。
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| 关 键 词： | 香稻 增香栽培 香气 产量 |
| 收稿时间： | 2011-11-15 |
Effects of Increasing Aroma Cultivation on Aroma and Grain Yield of Aromatic Rice and Their Mechanism |
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| HUANG Zhong-lin
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TANG Xiang-ru
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WANG Yu-liang
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CHEN Mu-jiao
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ZHAO Zheng-kun
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DUAN Mei-yang
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PAN Sheng-gang.Effects of Increasing Aroma Cultivation on Aroma and Grain Yield of Aromatic Rice and Their Mechanism[J].Scientia Agricultura Sinica,2012,45(6):1054-1065. |
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| Authors: | HUANG Zhong-lin TANG Xiang-ru WANG Yu-liang CHEN Mu-jiao ZHAO Zheng-kun DUAN Mei-yang PAN Sheng-gang |
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| Institution: | (College of Agriculture,South China Agriculture University,Guangzhou 510642) |
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| Abstract: | 【Objective】The purpose of this study was to investigate the effects of increasing aroma cultivation on aroma and grain yield of aromatic rice and their mechanism.【Method】A field contrast experiment was conducted with four conventional aromatic rice cultivars,Guixiangzhan,Meixiangzhan 2,Zhongxiang 1 and Raopingxiang,to evaluate the effects of increasing aroma cultivation(IAC) and conventional cultivation(CK) on aroma(2-acetyl-1-pyrroline) content in brown rice,biological characteristics and grain yield and its components of aromatic rice.【Result】The results showed that,compared with CK,increasing aroma cultivation could significantly increase 2-acetyl-1-pyrroline content in brown rice and milled rice,free proline content and proline oxidase activity in flag leaves and rice grains during post-heading and filling stages,and chlorophyll content(SPAD) in leaf(flag leaf) and leaf area index(LAI) at the main growth stages,dry matter translocation rate of stem-sheath,population photosynthesis potential during post-heading and filling stages,effective panicles,the total group of actual production,seed setting rate and yield,while it had no significant effect on 1 000-grain weight.【Conclusion】Increasing aroma cultivation could significantly increase free proline content and proline oxidase activity in flag leaves and grains of aromatic rice,then significantly increase the accumulation of 2-Acetyl-1-pyrroline(2-AP) in brown rice.Increasing aroma cultivation could also significantly enhance dry matter translocation rate of stem-sheath and population photosynthetic capacity during post-heading and filling stages,and then significantly increase the effective panicles the total group of actual production and seed setting rate,therefore,increasing aroma cultivation could increase not only aroma content but also the grain yield. |
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| Keywords: | aromatic rice increasing aroma cultivation aroma yield |
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