航天诱导凤仙花SP_3代植株形态及生理的研究

对经过航天诱变的凤仙花SP3代6个实验植株与没有经过航天诱变的6个对照植株进行秋播比较。在植株形态上,测量了5个指标,作了聚类分析,把12个单株分为3类。比较同株不同部位叶片的形状,发现变异植株叶片在不同发育阶段,其长出的形状不一致。对凤仙花生理进行了测定,发现光合色素含量增长极大,特别是叶绿素a;叶绿素a与叶绿素b的比值也增大;可溶性糖含量极大地减少。实验结果表明,航天诱导能够持续对凤仙花SP3代的形态和生理生化方面造成影响。

Morphological and Physiologic Trait of Impations balsamina in SP3 Generation Induced by Space Flight

The morphological and physiological traits of Impations balsamina in SP_3 generation grown in autumn induced by space flight were compared with natural plants in this paper.5 morphological characters of 6 treated plants were tested along with 6 natural individuals,and the 12 individuals could be divided into 3 groups by the dendrogram analysis.Further more,the detection of the ratio of length/width about the leaf revealed that the traits in the treated individuals of leaf varied with the development of individual plants.The photosynthetic pigments,especially the content of chlorophyll a were increased after space flight,resulting in the raise of the ratio of chlorophyll a/b.However,the content of soluble sugar was decreased after treatment.The results suggested that the space flight treatment could affect the I.balsamina successively,at least in the morphological and physiological traits of SP_3 generation.