| 甬优籼粳杂交稻栽后地上部干物质积累动态与特征分析 |
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| 引用本文： | 韦还和,张徐彬,葛佳琳,孟天瑶,陆钰,李心月,陶源,丁恩浩,陈英龙,戴其根.甬优籼粳杂交稻栽后地上部干物质积累动态与特征分析[J].作物学报,2021(3):546-555. |
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| 作者姓名： | 韦还和 张徐彬 葛佳琳 孟天瑶 陆钰 李心月 陶源 丁恩浩 陈英龙 戴其根 |
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| 作者单位： | 江苏省作物遗传生理重点实验室/江苏省作物栽培生理重点实验室/江苏省粮食作物现代产业技术协同创新中心/扬州大学水稻产业工程技术研究院;扬州大学教育部农业与农产品安全国际合作联合实验室/扬州大学农业科技发展研究院 |
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| 基金项目： | 江苏省重点研发计划项目(BE2016370,BE2019343);国家自然科学基金项目(31901448);江苏省高等学校自然科学研究面上项目(19KJB210004);江苏高校优势学科建设工程项目资助。 |
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| 摘 要： | 2015—2016年,以甬优籼粳杂交稻(甬优1540和甬优4540,全生育期天数169~171 d),常规粳稻(镇稻13号和武运粳30,全生育期天数159~160 d)和杂交籼稻(两优培九和扬两优6号,全生育期天数140~141 d)为试材,比较分析不同类型品种栽后地上部干物质积累特征及其差异。甬优籼粳杂交稻2年平均产量为12.4 t hm^–2,较常规粳稻和杂交籼稻分别增产7.8%和23.3%,差异显著。与常规粳稻和杂交籼稻相比,甬优籼粳杂交稻穗数、结实率和千粒重较低,每穗粒数则较高;籼粳杂交稻成熟期干物质积累量较高,收获指数较低。成熟期茎鞘和叶部干物重及其所占比例均呈籼粳杂交稻>常规粳稻>杂交籼稻;穗部干物重以籼粳杂交稻最高、杂交籼稻最低,穗部干重所占比例则呈相反趋势。甬优籼粳杂交稻、常规粳稻和杂交籼稻栽后地上部干物质积累动态均以Gompertz方程拟合效果较好。不同类型品种栽后地上部干物质积累速率均呈先升后降的单峰曲线变化趋势,籼粳杂交稻、常规粳稻和杂交籼稻最大干物质积累速率出现的时间分别在栽后61~62、64~66和63~64 d。籼粳杂交稻栽后最大干物质积累速率较常规粳稻和杂交籼稻分别高17.7%和17.3%。与常规粳稻和杂交籼稻相比,籼粳杂交稻在渐增期、快增期和缓增期阶段平均干物质积累速率均较高;渐增期和快增期阶段的干物质积累天数较低,缓增期阶段的干物质积累天数则较高。籼粳杂交稻在渐增期、快增期和缓增期阶段的干物质积累量均高于常规粳稻和杂交籼稻。本研究建立了符合不同类型水稻栽后地上部干物质积累动态特征的Gompertz方程;与常规粳稻和杂交籼稻相比,籼粳杂交稻在渐增期、快增期和缓增期阶段的干物质积累量均具优势,渐增期和快增期较高的干物质积累量主要由于此阶段较高的干物质积累速率,缓增期较高的干物质积累量是由于较高的干物质积累天数和积累速率。
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| 关 键 词： | 甬优系列 籼粳杂交稻 地上部干物质积累 Gompertz方程 |
Dynamics in above-ground biomass accumulation after transplanting and its characteristic analysis in Yongyou japonica/indica hybrids |
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| WEI Huan-He,ZHANG Xu-Bin,GE Jia-Lin,MENG Tian-Yao,LU Yu,LI Xin-Yue,TAO Yuan,DING En-Hao,CHEN Ying-Long,DAI Qi-Gen.Dynamics in above-ground biomass accumulation after transplanting and its characteristic analysis in Yongyou japonica/indica hybrids[J].Acta Agronomica Sinica,2021(3):546-555. |
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| Authors: | WEI Huan-He ZHANG Xu-Bin GE Jia-Lin MENG Tian-Yao LU Yu LI Xin-Yue TAO Yuan DING En-Hao CHEN Ying-Long DAI Qi-Gen |
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| Institution: | (Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Rice Industry Engineering Technology Research Institute,Yangzhou University,Yangzhou 225009,Jiangsu,China;Joint International Research Laboratory of Agriculture and Agro-product Safety,Ministry of Education/Institute of Agricultural Science and Technological Development,Yangzhou University,Yangzhou 225009,Jiangsu,China) |
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| Abstract: | In this study,two japonica/indica hybrids(JIH)(Yongyou 1540 and Yongyou 4540 with the total growth duration ranged from 169 to 171 days)of Yongyou series,two japonica conventional(JC)varieties(Zhendao 13 and Wuyunjing 30 with the total growth duration ranged from 159 to 160 days),and two indica hybrids(IH)varieties(Liangyoupeijiu and Yangliangyou 6 with the total growth duration ranged from 140 to 141 days)were grown to compare the characteristics and differences of above-ground biomass accumulation after transplanting among three variety types in 2015 and 2016.Grain yield of JIH was averaged 12.4 t hm^–2 for two years,and 7.8%and 23.3%higher at P<0.05 than that of JC and IH,respectively.Compared with JI and IH,JIH had lower panicle per m2,filled-grain percentage,and 1000-grain weight,while more spikelets per panicle.JIH also had higher total biomass weight at maturity stage,while lower harvest index.The biomass weight in stem and leaf and their ratio at maturity stage were the highest in JIH and lowest in IH.JIH had the highest panicle weight while IH had the lowest panicle weight,and the opposite trend was observed in the ratio of panicle weight to the total biomass weight at maturity among three variety types.The above-ground biomass accumulation dynamics after transplanting of JIH,JC,and IH were all well fitted by Gompertz equation.The above-ground biomass accumulation rate of different variety types showed a single-peak curve of increasing trend and then a decreasing trend after transplanting.The maximum biomass accumulation rate of JIH,JC,and IH was observed at 61–62,64–66,and 63–64 days after transplanting,respectively.The maximum biomass accumulation rate of JIH was 17.7%and 17.3%higher than that of JC and IH,respectively.Compared with JC and IH,JIH had higher mean biomass accumulation rate in the early,middle,and late stages;and JIH had lower duration days in the early and middle stages and higher duration days in the late stages.Compared with JC and IH,JIH had higher biomass accumulation in the early,middle,and late stages.In this study,a Gompertz model was established that conformed to the dynamic characteristics of above-ground biomass accumulation after transplanting in different variety types.Compared with JC and IH,JIH had superior biomass accumulation in the early,middle,and late stages;the higher biomass accumulation in the early and middle stages were due to the higher biomass accumulation rate,and higher biomass accumulation in the late stage was due to its higher biomass accumulation period and accumulation rate. |
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| Keywords: | Yongyou series japonica/indica hybrids above-ground biomass accumulation Gompertz equation |
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