[Objective] The aim was to select and breed Chunyou 618 which is a novel combination among japonica-indica hybrid rice subspecies. [Method] Chunyou 618 is a japonica-indica hybrid rice combination developed from Chunj...[Objective] The aim was to select and breed Chunyou 618 which is a novel combination among japonica-indica hybrid rice subspecies. [Method] Chunyou 618 is a japonica-indica hybrid rice combination developed from Chunjiang 16A, a late japonica CMS line with dwarfness and early anthesis time, and C18, an indicaclinous wide compatibility restorer line. In addition, the concerning characters were researched. [Result] Chunyou 618, which is japonica inclining, proved high in pro- duction and in resistance to lodging with Cheng's index at 15. It is of moderate re- sistance against Xanthomonas oryzae and stripe virus disease, of moderate susceptibility on rice blast, and of susceptibility on Nilaparvata lugens. The indices of rice quality achieved departmental standard 4 and grade 4 of Cooking Rice Variety Quality, respectively. [Conclusion] Chunyou 618 enjoys strong heterosis, strong stem, good lodging resistance, large panicles, good cold tolerance, high yield and wide adaptability, which is suitable to be grown in Zhejiang Province as single cropping late rice.展开更多
Chunyou 59 is a japonica-indica hybrid rice combination developed from Chunjiang 16A(a late japonica CMS line with dwarfness and early anthesis time)and CH59(an indicaclinous wide compatibility restorer line).It has t...Chunyou 59 is a japonica-indica hybrid rice combination developed from Chunjiang 16A(a late japonica CMS line with dwarfness and early anthesis time)and CH59(an indicaclinous wide compatibility restorer line).It has the characteristics of strong heterosis,strong stem,good lodging resistance,large panicles,good cold tolerance,high yield and wide adaptability.It was registered and released by Jiangxi Provincial Crop Variety Appraisal Committee in March 2009.The breeding procedure,characteristics,major techniques of cultivation and seed production of Chunyou 59 were introduced in the paper.展开更多
Chunyou 84 is an indica-japonica hybrid rice combination developed from Chunjiang 16A, a late japonica CMS line with early anthesis time, and C84, an indi-ca-japonica intermediate type restorer line with wide compatib...Chunyou 84 is an indica-japonica hybrid rice combination developed from Chunjiang 16A, a late japonica CMS line with early anthesis time, and C84, an indi-ca-japonica intermediate type restorer line with wide compatibility. It has the charac-teristics of high yield potential, high seed production, excel ent agronomic characters, good resistance and wide adaptability. It was registered and released by Zhejiang Provincial Crop Variety Appraisal Committee in March, 2013. The breeding proce-dure, characteristics, major techniques of cultivation and seed production of Chunyou 84 were introduced in this paper.展开更多
Chunyou 284 is a medium- japonica hybrid combination,as well as an indica-japonica subspecific hyrbid with super-high yield,which was developed from Chunjiang 23A,a thermo-sensitive CMS line with very early anthesis t...Chunyou 284 is a medium- japonica hybrid combination,as well as an indica-japonica subspecific hyrbid with super-high yield,which was developed from Chunjiang 23A,a thermo-sensitive CMS line with very early anthesis time,and C84,an indica-japonica intermediate type restorer line with wide compatibility.This combination has the advantages of high yield potential,early maturity,excellent comprehensive agronomic traits and wide adaptability.It was approved by Jiangsu Provincial Crop Variety Approval Committee in June,2018.The breeding process,main characteristics,cultivation techniques and seed production points of the combination were introduced.展开更多
以杂交粳稻春优84为材料,通过播种期(5月10日、5月20日、5月30日、6月9日、6月19日)、秧龄(20,25,30,35,40 d)和氮肥(150.0,187.5,225.0,262.5,300.0 kg N·hm^-25个氮素水平)多因素试验,研究不同播种期、移栽秧龄和氮素施用...以杂交粳稻春优84为材料,通过播种期(5月10日、5月20日、5月30日、6月9日、6月19日)、秧龄(20,25,30,35,40 d)和氮肥(150.0,187.5,225.0,262.5,300.0 kg N·hm^-25个氮素水平)多因素试验,研究不同播种期、移栽秧龄和氮素施用量对春优84各生育期干物质累积、产量及产量构成因子的影响。结果表明:春优84随着播种期的推迟生育进程相应推迟,生育期缩短,在5月10日播期产量最高,随着播种期推迟减产幅度加大;春优84在20 d秧龄产量最高,秧龄超过25 d产量显著下降,秧龄增加会降低有效穗数和每穗粒数,导致产量降低。春优84的秧龄弹性较大,可作为连作晚稻种植的潜力;增施氮肥有利于提高春优84成熟期干物质在穗部的分配比例,施氮量过多导致穗部干物质分配比例下降,产量降低。春优84在金华地区作单季晚稻种植的适宜播种期为5月10—20日,适期早播有利于产量提高,移栽秧龄以20~25 d为宜,超过25 d产量减产明显,最佳施氮量为262.5 kg N·hm^-2,过量施氮容易导致减产。展开更多
基金Supported by Fundamental Scientific Research Project of China National Rice Research Institute(2012RG001-2)"Selective Breeding and Demonstration of Super Rice"of Ministry of Agriculture+1 种基金Zhejiang 0406 ProjectNational High-tech R&D Program of China(863Program)(2010AA101301)~~
文摘[Objective] The aim was to select and breed Chunyou 618 which is a novel combination among japonica-indica hybrid rice subspecies. [Method] Chunyou 618 is a japonica-indica hybrid rice combination developed from Chunjiang 16A, a late japonica CMS line with dwarfness and early anthesis time, and C18, an indicaclinous wide compatibility restorer line. In addition, the concerning characters were researched. [Result] Chunyou 618, which is japonica inclining, proved high in pro- duction and in resistance to lodging with Cheng's index at 15. It is of moderate re- sistance against Xanthomonas oryzae and stripe virus disease, of moderate susceptibility on rice blast, and of susceptibility on Nilaparvata lugens. The indices of rice quality achieved departmental standard 4 and grade 4 of Cooking Rice Variety Quality, respectively. [Conclusion] Chunyou 618 enjoys strong heterosis, strong stem, good lodging resistance, large panicles, good cold tolerance, high yield and wide adaptability, which is suitable to be grown in Zhejiang Province as single cropping late rice.
基金Supported by Key Projects of Zhejiang Province(2008C22074)0406 Project in Zhejiang Province+2 种基金Ministry of Agriculture"China's Super Rice Breeding and Experimental Demonstration"Project(2009RG001-5)Operating Expenses of Basic Research of China National Rice Research InstituteAgricultural Science and Technology Across Project
文摘Chunyou 59 is a japonica-indica hybrid rice combination developed from Chunjiang 16A(a late japonica CMS line with dwarfness and early anthesis time)and CH59(an indicaclinous wide compatibility restorer line).It has the characteristics of strong heterosis,strong stem,good lodging resistance,large panicles,good cold tolerance,high yield and wide adaptability.It was registered and released by Jiangxi Provincial Crop Variety Appraisal Committee in March 2009.The breeding procedure,characteristics,major techniques of cultivation and seed production of Chunyou 59 were introduced in the paper.
基金Supported by Zhejiang 0406 Projectthe Project of "The Breeding and Experimental Demonstration of Chinese Super Rice" by Ministry of Agriculture+3 种基金the Project of Fundamental Research Funds of China National Rice Research Institute(2012RG001-2)National Agricultural Science and Technology Transformation Fund Project(2013GB23260592)Zhejiang Agricultural Science and Technology Cooperation Projects of "Three Agricultural Issues and Six Parties"Zhejiang Agricultural Project of Public Welfare Technology Research(2012C22023)~~
文摘Chunyou 84 is an indica-japonica hybrid rice combination developed from Chunjiang 16A, a late japonica CMS line with early anthesis time, and C84, an indi-ca-japonica intermediate type restorer line with wide compatibility. It has the charac-teristics of high yield potential, high seed production, excel ent agronomic characters, good resistance and wide adaptability. It was registered and released by Zhejiang Provincial Crop Variety Appraisal Committee in March, 2013. The breeding proce-dure, characteristics, major techniques of cultivation and seed production of Chunyou 84 were introduced in this paper.
基金Supported by National Key R&D Program of China(2017YFD0100405)the Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences(CAAS-ASTIP-201X-CNRRI)+3 种基金Independent Research Project of State Key Laboratory of Rice Biology(2017ZZKT10204)the Major Scientific Technological Project of New Varieties of Agriculture(Grain)of Zhejiang Province(2016C02050-5-1)the Fundamental Research Fund for China National Rice Research Institute(2017RG003-1)Breeding of High-yield Genetically Modified Rice Varieties(2016ZX08001004-001)
文摘Chunyou 284 is a medium- japonica hybrid combination,as well as an indica-japonica subspecific hyrbid with super-high yield,which was developed from Chunjiang 23A,a thermo-sensitive CMS line with very early anthesis time,and C84,an indica-japonica intermediate type restorer line with wide compatibility.This combination has the advantages of high yield potential,early maturity,excellent comprehensive agronomic traits and wide adaptability.It was approved by Jiangsu Provincial Crop Variety Approval Committee in June,2018.The breeding process,main characteristics,cultivation techniques and seed production points of the combination were introduced.
文摘以杂交粳稻春优84为材料,通过播种期(5月10日、5月20日、5月30日、6月9日、6月19日)、秧龄(20,25,30,35,40 d)和氮肥(150.0,187.5,225.0,262.5,300.0 kg N·hm^-25个氮素水平)多因素试验,研究不同播种期、移栽秧龄和氮素施用量对春优84各生育期干物质累积、产量及产量构成因子的影响。结果表明:春优84随着播种期的推迟生育进程相应推迟,生育期缩短,在5月10日播期产量最高,随着播种期推迟减产幅度加大;春优84在20 d秧龄产量最高,秧龄超过25 d产量显著下降,秧龄增加会降低有效穗数和每穗粒数,导致产量降低。春优84的秧龄弹性较大,可作为连作晚稻种植的潜力;增施氮肥有利于提高春优84成熟期干物质在穗部的分配比例,施氮量过多导致穗部干物质分配比例下降,产量降低。春优84在金华地区作单季晚稻种植的适宜播种期为5月10—20日,适期早播有利于产量提高,移栽秧龄以20~25 d为宜,超过25 d产量减产明显,最佳施氮量为262.5 kg N·hm^-2,过量施氮容易导致减产。