原、异位保存东乡野生稻主要农艺性状的比较研究

为了解原、异位保存东乡野生稻主要农艺性状的变化,对庵家山普通野生稻原、异位群体进行了考察和比较分析。结果表明,原、异位保存的东乡野生稻在每穗总粒数、每穗实粒数、结实率等方面存在较大的差异,如异位保存的东乡野生稻每穗总粒数平均为58.28粒,比原位多11.44粒,但其每穗实粒数却较少,为9.89粒,结实率降低了45.43%。从种植环境可以发现,异位保存圃的环境不适宜东乡野生稻的生长,应该选择与原生境相类似的种植环境,以便于东乡野生稻的保存、研究与利用。

Comparative Studies on the Main Agronomic Characteristics between In-situ and Ex-situ Conserved Wild Rice Populations in Dongxiang

To find out the differences of the main agronomic characteristics between wild rice populations in-situ and ex-situ conserved in Dongxiang County, Jiangxi Province, the comparative analysis was done on several characteristics using wild rices in AnJiaShan in-situ and ex-situ conservation. The results indicated there were some variations on total grains per panicle, full grains per panicle and seeds setting rate etc. The total grains per panicle of ex-situ conservation was 58.28, more than in-situ conservation wild rice. However, its number of full grains per panicle was 9. 89, less than in-situ population, while its seeds setting rate was reduced 45.43%. The field survey results showed the environment of ex-situ conservation was not suitable for the growth of Dongxiang wild rice, meaning that the ex-situ conservation nursery of Dongxiang wild rice must be re-built in the area where the environment is similar to the original habitat.