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作 者 ：宋文昌;张玉华

期 刊 ：作物学报 1992年 18卷 02期 页码：137-144

关键词：同源四倍体水稻；农艺性状；营养品质；

Keywords:Autotetraploid rice, Agronomic traits, Nutritional quality,

摘 要 ：同源四倍体水稻原种(2n=4x=48)是通过加倍二倍体水稻品种(2n=2x=24)的染色体数创造的。自1979年对四倍体水稻原种(4x)和相应的二倍体水稻品种(2x)进行了对比,结果发现,四倍体水稻原种的许多农艺性状发生了变化。它们的每株穗数、每穗粒数和结实率大幅度减少,而千粒重增加很多。四倍体水稻原种的株高降低、茎秆变粗,比较抗倒伏

Abstract:Autotetraploid rice original variety (2n=4x=48) were created by doubling thechromosome number of diploid rice variety (2n=2x=24).Pooling together thedata from comparing the 4x original varieties with their corresponding 2x varietiessince 1979,it was found,that tetraploidy could cause variation of ma

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