【摘要】 以单瓣黄刺玫为材料,对不同植株的花期及种实性状进行观测与研究,结果表明:不同植株之间的花期与有关形态性状相差不大,但与重瓣黄刺玫相比较,花期提早5 d,且花色鲜艳;株间种实性状存在差异,1号树的果实每果含有的平均种子数量和种子的宽与长均大于或多于2号树,种子的千粒重分别为23.4 g和19.1 g,1号树的重量为2号树的122.5%,两者差异较大。差异是遗传基础作用的结果。更多还原

【Abstract】 Anthesis and traits of achene and seed were observed and studied for different individuals of Rosa xanthina var.normalis.The results showed that the anthesis date was similar among R.xanthina var.normalis individuals,5 days earlier than that of R.xanthina.There significant differences of achene and seed traits among individuals.The number of achene,number of seed per achene,and length and width of seed of individual No.1 were all bigger than those of No.2.The difference of thousand seed weight of No.1 and No.2 was remarkable,which were 23.4 g and 19.1 g,respectively.All the difference of traits were the results of heredity.更多还原