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以高秆大穗型水稻品种中花8号、中花10号为材料,在其幼穗体细胞无性系变异中,出现了许多矮秆变异体,试验表明这种变异体的株高性状在遗传上是稳定的,它们的大穗、大粒高产特性,随着株高的降低,千粒重、穗粒数等农艺性状也有所降低,从而会导致产量的变化。但也可从中选到植株较矮,产量和原种对照相近的矮秆变异系。
In the clonal variation of somaclonal variation, many dwarf varieties were found in Zhonghua No. 8 and Zhonghua 10 with high-stalk and big-ear rice varieties. The results showed that the plant height traits They are genetically stable. Their big spike and large grain yield are higher. With the decrease of plant height, the agronomic traits such as 1000-grain weight and spike grain number also decrease, which will lead to the change of yield. However, we can also choose to plant shorter dwarf, yield and control of the original dwarf mutant lines.