プラント・オパールの形状からみた中国・草鞋山遺跡(6000年前〜現代)に栽培されたイネの品種群およびその歴史的変遷  [in Japanese] Cultivar Group of Rice Cultivated in Caoxieshan Site (B.P.6000〜Present) Determined by the Morphology of Plant Opals and Its Historical Change  [in Japanese]

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Abstract

1992年から,プラント・オパール分析による中国長江中・下流域における稲作の起源およびその伝播に関する日中共同研究が開始され,太湖流域に所在する草鞋全山遺跡における古代水田趾の発掘調査が行われた。調査の結果,遺跡の堆積土層が10層確認され,5層からlO層までは馬家浜中期(B.P.5900〜6200年)の文化層であることが判った。また,プラント・オパールの分析により,春秋,綾沢,馬家浜時期の水田土層が確認された。さらに,馬家浜中期の土層から40面余りの水田遺構が検出された。本論文では,検出された水田遺構の一部および各土層から採取した土壌試料について行ったプラント・オパールの定量分析および形状分析の結果を報告し,当該遺跡における古代イネの品種群およびその歴史的変遷について検討を加えたものである。プラント・オパールの定量分析より,各遺構および各土層からイネのプラント・オパールが多量に検出された。この結果から,草革全山遺跡周辺では,B.P.6000年の馬家浜中期からイネが継続して栽培されてきたと推測される。

A joint research project has been carried out between Japan and China on the origin and spread of rice in the Middle and Lower Changiiang River Valley of China by plant opal analysis since 1992. The excavation of ancient paddy fields near the Caoxieshan site in Wu County, Jiangsu Province was conducted. Ten accumulated soil layers with each cultural period property were confirmed, and the layers from the fifth layer to the tenth layer were identified as belonging to the Middle Majia-bang period (B.P.5900-6200). And the existence of paddy fields in soil layers of Chunqiu, Songze and Majiabang period were identified by plant opal analysis. Moreover, more than forty paddy field sites were excavated under the ninth or tenth layer. This paper reports on the results of quantitative and morphological analysis of plant opals on soil samples collected from nineteen paddy filed sites and ten soil layers at the Caoxieshan site in 1994 and 1995, and discusses the cultivar group and its historical change of ancient rice cultivated near the Caoxieshan site. The quantitative analysis of plant opals detected large amounts of rice plant opals from motor cell silica bodies in all the samples, suggesting that the rice cultivation near the Caoxieshan site began from the middle Majiabang period and continued up to the present. Moreover, the rapid increase of rice leaf weight inferred from plant opals in soil layers of middle Majiabang period suggested that rice cultivation had been prevalently practised during this period. The morphological analysis of plant opals suggested that the plant opals from the soil layers of middle Majiabang period were derived from japonica rice. Compared to the motor cell silica bodies from Chinese native Keng (correspond to japonica) rice, the plant opals had a larger value in b/a as well as in vertical length and lateral length, and the discriminant scores were more like those from typical japonica rice. A comparison of the discriminant scores of plant opals from the ten soil layers showed a slowly decreasing trend from the lower layers to the upper ones. And the scores were especially small for the soil layers above the third one (the Song period), suggesting that it is highly possible that the indica rice would be probably cultivated from Song period near the Caoxieshan site.

Journal

  • Breeding science

    Breeding science 48(4), 387-394, 1998-12-01

    Japanese Society of Breeding

References:  18

Cited by:  1

Codes

  • NII Article ID (NAID)
    110001807929
  • NII NACSIS-CAT ID (NCID)
    AA11353132
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    13447610
  • NDL Article ID
    4614164
  • NDL Source Classification
    ZR6(科学技術--農林水産)
  • NDL Call No.
    Z18-238
  • Data Source
    CJP  CJPref  NDL  NII-ELS 
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