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作物学报 ›› 2009, Vol. 35 ›› Issue (10): 1900-1908.doi: 10.3724/SP.J.1006.2009.01900

• 耕作栽培·生理生化 • 上一篇    下一篇

不同库容量类型籼稻品种源库相关参数的基本特点

董桂春1，田昊1，董燕萍2，张彪1，李进前1，于小凤1，王余龙1,*   

  1. 1扬州大学江苏省作物遗传生理重点实验室/农业部长江中下游作物生理生态与栽培重点开放实验室，江苏扬州225009；2连云港市园艺蔬菜技术指导站，江苏连云港222001
  • 收稿日期:2009-03-20 修回日期:2009-06-25 出版日期:2009-10-12 网络出版日期:2009-08-07
  • 通讯作者: 王余龙, E-mail: ylwang@yzu.edu.cn
  • 基金资助:

    本研究由国家自然科学基金项目（30270777和30771275）资助。

Characteristics of Source-Sink Related Parameters in Conventional Indica Rice Cultivars with Different Types of Sink Potential

DONG Gui-Chun1,TIAN Hao1,DONG Yan-Ping2,ZHANG Biao1,LI Jin-Qian1,YU Xiao-Feng1,WANG Yu-Long1*   

  1. 1Key Laboratory of Crop Genetics and Physiology of Jiangsu Province/Key Laboratory of Crop Physiology，Ecology and Cultivation in Middle and Lower Reaches of Yangtze River of Ministry of Agriculture，Yangzhou University,Yangzhou 225009,China；2Techniques Instruction Center of Horticulture and Vegetables of Lianyungang City，Lianyuangang 222001，China
  • Received:2009-03-20 Revised:2009-06-25 Published:2009-10-12 Published online:2009-08-07
  • Contact: WANG Yu-Long,E-mail:ylwang@yzu.edu.cn

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被引次数

20

摘要：

在群体水培条件下，以国内、外不同年代育成的常规籼稻代表品种(2001年为88个、2002年为122个)为材料，测定叶面积、干物质重(包括根系)、产量及其构成因素、氮素含量等，采用组内最小平方和的动态聚类方法将供试品种按库容量从低到高依次分为A、B、C、D、E、F 6类，研究各类品种源、库主要性状的基本特点。结果表明：(1)供试品种间库容量的差异很大(426%和817%)。A、B、C、D、E、F类品种的平均库容量，2001年分别为426.37、642.53、770.96、903.73、1 064.32、1 213.90 g m-2，2002年分别为359.36、574.11、764.98、962.43、1 200.11、1 455.59 g m-2；(2)大库容量品种全生育期天数、每日形成的库容量较大，库容量显著受到全生育期天数、每日形成库容量的影响，后者对库容量的作用大于前者对库容量的作用；(3)大库容量类型品种抽穗期叶面积、成熟期叶面积、抽穗期绿叶重、成熟期绿叶重、比叶重较大，但结实期叶面积下降比例小；(4)大库容量类型品种结实期净同化率、单位叶面积籽粒产量、单位叶面积库容量、单位干物质库容量、单位氮素库容量大于小库容量类型品种；（5）多元逐步回归分析表明，抽穗期绿叶重、单位叶面积库容量、单位氮素库容量、单位干物质库容量、净同化率、比叶重是影响库容量的主要源库性状(R2= 0.953~0.963)。通径分析表明，抽穗期绿叶重、单位叶面积库容量对库容量的作用要显著大于单位氮素库容量、单位干物质库容量、净同化率、比叶重等对库容量的作用。

关键词: 常规籼稻, 库容量, 源库关系

Abstract:

Eighty-eight and one hundred and twenty-two conventional indica rice cultivars were solution-cultured in 2001 and 2002, respectively. Leaf area index (LAI), dry matter weight (including root, culm and sheath, leaves, panicle), nitrogen content in different organs, yield and its components were measured respectively. The tested rice cultivars were classified into 6 types (i.e. A, B, C, D, E and F, A was the lowest, and F was the highest) based on their sink potential level by the MinSSw method, to study their difference in source and sink. Results were as follows: (1) Difference in sink potential (SP) of the cultivars used in this study was very large, the averages of SP in types of A, B, C, D, E, F were 426.37, 642.53,770.96, 903.73, 1 064.32, 1 213.90 g m-2 in 2001, and 359.36, 574.11, 764.98, 962.43, 1 200.11, 1 455.59 g m-2in 2002, respectively. (2) SP was significantly influenced by growth duration and SP per day, and the effect of SP per day on SP was more important than that of growth duration. (3) LAI at heading and maturing stage, green leaf weight at heading and maturing stage, leaf weight per unit leaf area in large SP type of indica rice were higher than those in small SP type, while the decline proportion of LAI during grain filling period. (4) Varieties with large SP showed higher net assimilation rate and higher values in grain yield per unit leaf area, SP per unit leaf area, SP per unit dry matter weight and SP per unit N at heading stage. (5)Multiple stepwise regression analysis indicated that SP was significantly influenced by green leaf weight at heading stage, SP per unit leaf area, SP per unit N, SP per unit dry matter weight, net assimilation rate during grain filling period and leaf weight per unit leaf area, with the determination coefficient ranging from 0.953 to 0.963. Path analysis showed that effects of green leaf weight at heading stage and SP per unit leaf area on SP were larger than those of SP per unit N, and SP per unit dry matter weight, net assimilation rate during grain filling period, and leaf weight per unit leaf area.

Key words: Conventional indica rice, Sink potential, Source, Sink, Source-sink relation

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