小麦—偃麦草杂种夭亡与不孕问题的探讨——小麦与偃麦草杂交的研究(二)

• 作 者: 李振声 陈潄阳 李容玲 刘冠军
• 机 构: 中国科学院西北生物土壤研究所遗传育种组,中国科学院西北生物土壤研究所遗传育种组,中国科学院西北生物土壤研究所遗传育种组,中国科学院西北生物土壤研究所遗传育种组,
• 出 处: 作物学报
• 发表日期: 1962年01期
• 关键词: 杂种 偃麦草 外界环境条件 长穗 发育时期 遗传特性 密穗小麦 花数 杂交亲本 分株繁殖

小麦——偃麦草杂种夭亡与不孕现象是多式多样的,表现在各个发育时期,概括可分为九种。其产生原因比较复杂,它受亲本遗传特性的制约,又受外界环境条件的影响,也因个体发育的年龄等而有变化。作者认为,采用以下四种方法配合使用,是克服小麦——偃麦草杂种夭亡与不孕的有效方法:1.在选择适合性强的杂交亲本的基础上,进行大量杂交;2.对自花不孕的杂种进行囘交;3、当年同交不成的优良杂种植株进行无性繁殖;4.对个别具有特殊优良性状的杂种植株,进行分株繁殖和培育。

Wheat - Thinopyrum hybrid prey death and infertility phenomenon is multi-diverse, manifested in all developmental stages, can be broadly divided into nine. Its causes are more complex, it is subject to the genetic characteristics of the parent constraints, but also by the impact of external environmental conditions, but also because of the age of individuals and other changes. The authors believe that the use of the following four methods is an effective way to overcome the premature death and infertility of wheat-thirtyenths hybrids: (1) a large number of crosses should be made based on the selection of suitable hybrid parents; (2) Infertile hybrid backcross; 3, the same year failed to cross the fine hybrid plants for asexual reproduction; 4 pairs of individual hybrid plants with special excellent traits, breeding and breeding ramets.