Analysis on Dry Matter Production Characteristics of Super Hybrid Rice

Six middle-season indica hybrid rice combinations, including five super hybrid rice combinations with the high yield about 10.5 t/ha and a check hybrid rice combination Shanyou 63 with a yield potential about 9.5 t/ha, were used as materials to study the dry matter production characteristics. The su...

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Veröffentlicht in:Rice science 2008-06, Vol.15 (2), p.110-118
Hauptverfasser: Wu, Wen-ge, Zhang, Hong-cheng, Qian, Ying-fei, Cheng, Ye, Wu, Gui-cheng, Zhai, Chao-qun, Dai, Qi-gen
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container_end_page 118
container_issue 2
container_start_page 110
container_title Rice science
container_volume 15
creator Wu, Wen-ge
Zhang, Hong-cheng
Qian, Ying-fei
Cheng, Ye
Wu, Gui-cheng
Zhai, Chao-qun
Dai, Qi-gen
description Six middle-season indica hybrid rice combinations, including five super hybrid rice combinations with the high yield about 10.5 t/ha and a check hybrid rice combination Shanyou 63 with a yield potential about 9.5 t/ha, were used as materials to study the dry matter production characteristics. The super hybrid rice showed a high ability in dry matter production and accumulation and its yield enhanced with the increase of dry matter accumulation. The advantage period of dry matter production in the super hybrid rice was mainly at the middle and late growth stages compared with the check. The grain yield had no significant correlation with the dry matter accumulation before the elongation stage while had a significantly positive correlation with the dry matter accumulation from the elongation to maturity stages in super hybrid rice. There were more dry matter in vegetative organs at the heading stage in the super hybrid rice but its contribution to yield (apparent conversion percentage) was averagely 4.3 percent points lower than that in the check. For crop growth rate (CGR), the comparative advantage of super hybrid rice was at the middle and late stages, especially after flowering. Moreover, as the rising of leaf area index (LAI) and leaf area duration (LAD), CGR enhanced. The total LAD and the mean of lAD per day of super hybrid rice was about 14.79% and 10.31% higher than those of the check, respectively. The results indicate that the high yield of super hybrid rice mostly comes from the products of photosynthesis after heading, which is shown by the increased CGR at middle and later stages. It is suggested that LAD character might be used to better explain the advantage in the dry matter production of super hybrid rice than LAI.
doi_str_mv 10.1016/S1672-6308(08)60028-1
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The super hybrid rice showed a high ability in dry matter production and accumulation and its yield enhanced with the increase of dry matter accumulation. The advantage period of dry matter production in the super hybrid rice was mainly at the middle and late growth stages compared with the check. The grain yield had no significant correlation with the dry matter accumulation before the elongation stage while had a significantly positive correlation with the dry matter accumulation from the elongation to maturity stages in super hybrid rice. There were more dry matter in vegetative organs at the heading stage in the super hybrid rice but its contribution to yield (apparent conversion percentage) was averagely 4.3 percent points lower than that in the check. For crop growth rate (CGR), the comparative advantage of super hybrid rice was at the middle and late stages, especially after flowering. Moreover, as the rising of leaf area index (LAI) and leaf area duration (LAD), CGR enhanced. The total LAD and the mean of lAD per day of super hybrid rice was about 14.79% and 10.31% higher than those of the check, respectively. The results indicate that the high yield of super hybrid rice mostly comes from the products of photosynthesis after heading, which is shown by the increased CGR at middle and later stages. It is suggested that LAD character might be used to better explain the advantage in the dry matter production of super hybrid rice than LAI.</description><identifier>ISSN: 1672-6308</identifier><identifier>EISSN: 1876-4762</identifier><identifier>DOI: 10.1016/S1672-6308(08)60028-1</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>crop growth rate ; dry matter production ; leaf area duration ; leaf area index ; net assimilation rate ; super hybrid rice ; 作物生长比 ; 叶面宽度 ; 干物质生产 ; 超级杂交水稻</subject><ispartof>Rice science, 2008-06, Vol.15 (2), p.110-118</ispartof><rights>2008 China National Rice Research Institute</rights><rights>Copyright © Wanfang Data Co. Ltd. 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The super hybrid rice showed a high ability in dry matter production and accumulation and its yield enhanced with the increase of dry matter accumulation. The advantage period of dry matter production in the super hybrid rice was mainly at the middle and late growth stages compared with the check. The grain yield had no significant correlation with the dry matter accumulation before the elongation stage while had a significantly positive correlation with the dry matter accumulation from the elongation to maturity stages in super hybrid rice. There were more dry matter in vegetative organs at the heading stage in the super hybrid rice but its contribution to yield (apparent conversion percentage) was averagely 4.3 percent points lower than that in the check. For crop growth rate (CGR), the comparative advantage of super hybrid rice was at the middle and late stages, especially after flowering. Moreover, as the rising of leaf area index (LAI) and leaf area duration (LAD), CGR enhanced. 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It is suggested that LAD character might be used to better explain the advantage in the dry matter production of super hybrid rice than LAI.</description><subject>crop growth rate</subject><subject>dry matter production</subject><subject>leaf area duration</subject><subject>leaf area index</subject><subject>net assimilation rate</subject><subject>super hybrid rice</subject><subject>作物生长比</subject><subject>叶面宽度</subject><subject>干物质生产</subject><subject>超级杂交水稻</subject><issn>1672-6308</issn><issn>1876-4762</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNqFkNtKAzEQhoMoWKuPICxeKbKaw252eiWlWitUFKvXIZtDm1p3a7JV1qc3PXgtDDPD8M3pR-iU4CuCCb-eEF7QlDMM5xguOMYUUrKHOgQKnmYFp_sx_0MO0VEIc4x5xnGvg4b9Si7a4EJSV8mtb5NH2TTGJ8--1ivVuFgdzKSXKhZdaJyKoE0mq2VkRm3pnU5enDLH6MDKRTAnu9hFb8O718EoHT_dPwz641SxgjYpVUB5RnNFMyA2LxjLSiBYsUxLbi2mvbKXgwRQMs-oJqBJCaUEaxSALXPWRZfbud-ysrKainm98vGDIH6mQbfzphSGYgw4ujWdb2nl6xC8sWLp3Yf0rSBYrKUTG-nEWhcRbSOdILHvZttn4itfzngRlDOVMtp5oxqha_fvhLPd5lldTT9dvLSU6t26hRG0gIJgYOwXknGApQ</recordid><startdate>20080601</startdate><enddate>20080601</enddate><creator>Wu, Wen-ge</creator><creator>Zhang, Hong-cheng</creator><creator>Qian, Ying-fei</creator><creator>Cheng, Ye</creator><creator>Wu, Gui-cheng</creator><creator>Zhai, Chao-qun</creator><creator>Dai, Qi-gen</creator><general>Elsevier B.V</general><general>Rice Cultivation Technology Innovation Center in the Middle and Lower Reaches of the Yangtze River,Ministry of Agriculture/Rice Research Institute,Anhui Academy of Agricultural Sciences,Hefei 230031,China</general><general>Agricultural College,Yangzhou University,Yangzhou %Agricultural College,Yangzhou University,Yangzhou 225009,China</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W95</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>20080601</creationdate><title>Analysis on Dry Matter Production Characteristics of Super Hybrid Rice</title><author>Wu, Wen-ge ; Zhang, Hong-cheng ; Qian, Ying-fei ; Cheng, Ye ; Wu, Gui-cheng ; Zhai, Chao-qun ; Dai, Qi-gen</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c372t-2c826425c2481f57334b810c34da6ff029b958a88ca542d18d1b8ba8fec88fb53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>crop growth rate</topic><topic>dry matter production</topic><topic>leaf area duration</topic><topic>leaf area index</topic><topic>net assimilation rate</topic><topic>super hybrid rice</topic><topic>作物生长比</topic><topic>叶面宽度</topic><topic>干物质生产</topic><topic>超级杂交水稻</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wu, Wen-ge</creatorcontrib><creatorcontrib>Zhang, Hong-cheng</creatorcontrib><creatorcontrib>Qian, Ying-fei</creatorcontrib><creatorcontrib>Cheng, Ye</creatorcontrib><creatorcontrib>Wu, Gui-cheng</creatorcontrib><creatorcontrib>Zhai, Chao-qun</creatorcontrib><creatorcontrib>Dai, Qi-gen</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库-农业科学</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>Rice science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, Wen-ge</au><au>Zhang, Hong-cheng</au><au>Qian, Ying-fei</au><au>Cheng, Ye</au><au>Wu, Gui-cheng</au><au>Zhai, Chao-qun</au><au>Dai, Qi-gen</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Analysis on Dry Matter Production Characteristics of Super Hybrid Rice</atitle><jtitle>Rice science</jtitle><addtitle>Rice science</addtitle><date>2008-06-01</date><risdate>2008</risdate><volume>15</volume><issue>2</issue><spage>110</spage><epage>118</epage><pages>110-118</pages><issn>1672-6308</issn><eissn>1876-4762</eissn><abstract>Six middle-season indica hybrid rice combinations, including five super hybrid rice combinations with the high yield about 10.5 t/ha and a check hybrid rice combination Shanyou 63 with a yield potential about 9.5 t/ha, were used as materials to study the dry matter production characteristics. 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subjects crop growth rate
dry matter production
leaf area duration
leaf area index
net assimilation rate
super hybrid rice
作物生长比
叶面宽度
干物质生产
超级杂交水稻
title Analysis on Dry Matter Production Characteristics of Super Hybrid Rice
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