云南作物资源特征特性及生态地理分布研究Ⅲ.云南地方稻种资源的外观品质

利用云南省128个县所属的气候类型并结合云南区域内的5个稻作分区,应用GIS、Excel、Foxpro等软件分析研究了云南地方稻种资源外观品质的生态地理分布。初步摸清了外观品质主要是粒型包括粒长、粒长宽比和米色的生态地理分布习性,从总趋势上看北热带和南亚热带以及滇南单双季籼稻区和南部边缘水陆稻区的资源中粒长的长和粒长宽比值都十分理想;而南亚热带及滇南单双季籼稻区的有色米资源分布较丰富,但针对外观品质不同的成分和特性还有着各自的分布侧重区域等,其研究结果可为优异资源挖掘和利用、优质稻育种研究、生产等领域提供参考依据。

Characteristics and geographical distribution of Yunnan crops resources Ⅲ. Appearance quality of Yunnan local rice germplasm

The ecological distribution of appearance quality of Yunnan local rice germplasm were analysed by using software GIS,Excel and Foxpro combined with climates of 128 counties in 5 Yunnan rice zones.Results indicated that in general,the length and ratio of length vs width of grain were good in germplasm from north tropic,south subtropics,single or double-cropping indica rice areas of south Yunnan and paddy or upland rice areas of south border.Color rice germplasm mainly came from south tropic and single or double-cropping Indica rice areas of south Yunnan.However,in areas above there were difference in component or characteristics of appearance quality.