云南稻种资源表现型分布地和分布民族分析

通过对分布于82个县市的1630份中国云南保存的地方稻种资源多种表现型现象进行分析,结果共有724份稻种资源是具有多种表现型现象的资源,即多型性资源,多型性资源的比例为44．0％,多型性系数X为1．75,多样性指数日为1．34,X与日的相关系数r=0．90。多型性资源的地理分布主要集中在思茅、临沦、版纳和德宏4个地州。以墨江、景洪、龙隆、永德、普洱、孟连和云县等7个县(市)为中心的地带,即云南多型性稻种资源主要集中分布在南部边缘及滇西南地区的野生稻分布区、稻种资源富集区和陆稻的主要种植区。分布地区是傣族、哈尼族、拉祜族和佤族等少数民族的主要聚居地。云南稻种资源的多种表现型现象与当地的地理和民族密切相关。

ANALYSIS OF DISTRIBUTION OF POLY -PHENOTYPES OF YUNNAN INDIGENOUS RICE RESOURCES AMONG DIFFERENT LOCALITIES AND NATIONALITIES

An analysis of 1630 accessions of Yunnan indigenous rice collected from 82 counties showed that 724 of them fell into the category of " poly - phenotype resources" , accounting for 44% of the total, with a poly - phenotype coefficient (X) of 1.75, a diversity index (H) of 1.34 and a correlation coefficient (r) between X and H of 0.90 * *. They were found to distribute mainly in the 4 prefectures of Simao, Lincang, Banna and Dehong covering 9 counties, which are located in the southern edge and southwestern Yunnan and are inhabited mainly by the Dai, Nani, Lahu and Wa nationalities.