马铃薯体细胞杂种主要形态性状和农艺性状鉴定

试验对来自马铃薯栽培种Solanum tuberosum与野生种S.chacoense原生质体融合产生的131个株系进行了形态学观察。结果表明,与亲本相比,大多数体细胞杂种的生长势较亲本弱,所有杂种的株高均小于融合亲本;匍匐茎长度均小于双亲平均数,其中小于栽培种亲本的体细胞杂种占42.1%;大多数体细胞杂种的叶片呈卵园形,叶形指数小于双亲。65%的体细胞杂种叶片有不同程度的褶皱现象。杂种群体的株高分离呈正态分布,匍匐茎长度的分离呈偏态分布。

Morphologic and Agronomic Character of Somatic Hybrids between Solanum tuberosum and S. chacoense

Morphologic and agronomic character of 131 somatic hybrids obtained through protoplast fusion between Solarium tuberosum and S. chacoense were investigated. Compared with their parents, most of the somatic hybrids were weak in growth vigor and all hybrids ware short in plant height. Stolon length for all hybrids was shorter than mean value of their parents, and hybrids with stolon less than their cultivated parent accounted for 42.1%. The variation of the leaf in shape and leaflet numbers was very complicated among the somatic hybrids. Sixty-five percent of somatic hybrids had crinkle leaves more or less. The plant height of somatic hybrid population showed normal distribution, but stolon length skew distribution.