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作物学报 ›› 2008, Vol. 34 ›› Issue (11): 2041-2045.doi: 10.3724/SP.J.1006.2008.02041

• 研究简报 • 上一篇    下一篇

早籼稻品种更替过程中农艺性状的演变特征

袁江1,2;王丹英1;廖西元1;丁艳锋2;邵国胜1;徐春梅1;彭建1;王绍华2,*;章秀福1,*   

  1. 1 中国水稻研究所水稻生物学国家重点实验室，浙江杭州310006；2 南京农业大学农业部作物生长调控重点开放实验室，江苏南京210095
  • 收稿日期:2008-04-10 修回日期:1900-01-01 出版日期:2008-11-13 网络出版日期:2008-09-06
  • 通讯作者: 王绍华
  • 基金资助:

    国家"十一五"科技支撑计划"粮食丰产科技工程"项目(2006BAD02A13-3-1)

Evolution Characteristics of Agronomic Traits in Cultivar Replacement of Early Season Indica Rice

YUAN Jiang12, WANG Dan-Ying1,LIAO Xi-Yuan1,DING Yan-Feng2,SHAO Guo-Sheng1,XU Chun-Mei1,PENG Jian1,WANG Shao-Hua2*,ZHANG Xiu-Fu1*   

  1. 1 National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, Zhejiang; 2 Key Laboratory of Crop Growth Regulation, Ministry of Agriculture, Nanjing Agricultural University, Nangjing 210095, Jiangsu, China
  • Received:2008-04-10 Revised:1900-01-01 Published:2008-11-13 Published online:2008-09-06
  • Contact: WANG Shao-Hua

PDF

1297

被引次数

43

摘要：

以南方稻区品种更替过程中大面积推广的18个早籼稻代表品种为材料，按高秆品种、矮秆品种、矮抗品种、优超品种4个演变阶段，采用常规栽培方法研究其农艺性状的演变特征。结果表明，随着品种的演变，产量、收获指数、每穗粒数均有提高；有效穗、结实率、千粒重变化不大。进一步分析表明，每穗粒数的增加是着粒密度改良所致。农艺性状与年代的回归分析表明，生物量与株高在1980年后有增加的趋势，生育期有缩短的趋势。相关分析表明，决定早籼稻产量的农艺性状为生物量、株高、收获指数和每穗粒数。

关键词: 早籼稻, 品种更替, 农艺性状, 演变特征

Abstract:

Eighteen leading cultivars released from 1934 to 2006 and widely planted ever in south China were used, and classified into four rice genotypes, i.e. high-stalk cultivar (HC), dwarf cultivar (DC), dwarf and resistant cultivar (DRC), high-quality and super cultivar (QSC) in the present study conducted at 2006 and 2007 under conventional cultivation conditions. Plant height and growth duration as typical agronomical traits and grains per panicle, effective panicles and 1000-grain weight as main yield parameters were investigated in the study. Results showed that grain yield was increased with the increase of harvest index, grains per panicle and grain density in the evolution of the cultivars. The results further indicated that higher grains per panicle were closely related to the higher grain density. The regression analysis results showed that plant height and biomass tended to increase after 1980, while growth duration decreased. The correlation analysis showed that there were four key factors, biomass, plant height, harvest index, and grains per panicle, affecting grain yield.

Key words: Early season indica rice, Cultivar replacement, Agronomic trait, Evolution characteristic

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