【摘要】 以离子束介导后的第2代小麦群体为研究材料,对其主要农艺性状进行了观察鉴定。结果表明,在第2代群体内出现了更多的变异类型和更宽的突变谱,这些变异类型主要包括植株高度、植株形态、叶型、穗型、生育期和籽粒性状等6个方面。植株高度的分离状态表现出明显的随机性;株叶形态的变异因受体材料的遗传基础不同而表现出一定的特异性;穗型变异的规律并不明显;生育期的变异和籽粒性状的变异表现出数量性状的特征。更多还原

【Abstract】 The main agronomic characters were assayed in the second generation of wheat with maize DNA by ion beam mediated technique.The results showed that there were more variation types and broader variation extent in the second generation.The variation types included plant height,plant shape,leaf shape,ear shape,growth duration and seed traits.The discrete state of plant height was obviously random.The plant shape showed specificity in response to the genetic foundation of the acceptors.The variation rule of ear shape was not visible.The variation of growth duration and seed traits displayed the feature of quantitative character.更多还原