somatic variation

Somatic variation can provide a lot of materials selected for crop breeding.

无性系变异为农作物细胞工程育种提供丰富的选择材料。

While female display, more rates than male with the symptoms of attempted suicide, psychic anxiety, somatic anxiety, general somatic symptoms, diurnal variation.

女性患者在自杀意念、精神性焦虑、躯体性焦虑、全身疲乏、晨夜夕轻症状出现频率多于男性，但无统计差异。

In order to improve the present germplasm or create new germplasm, the prior researchers usually use the means of biotechnology, such as meristem culture, protoplast culture, somatic hybridization, gene transformation and somaclonal variation.

研究者大多通过西瓜茎尖培养、原生质体培养、体细胞杂交、基因转化和诱导体细胞无性系变异等生物技术途径来改良西瓜现有的品种或创造新种质。

The achievement on modern biological techniques, such as embryo rescue, somatic hybridization, somatic cell variation and genetic engineering, has been summarized in new germplasm creation of Brassica species.

从胚拯救、体细胞杂交、体细胞无性系变异和基因工程4方面综述了现代生物技术在油菜种质创新中所取得的成绩。