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Permanent Genetic Variability in the Introgressive Lines and Amphidiploids of Triticeae

机译：Triticeae渐渗系和二倍体的永久遗传变异

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摘要

The hybrid origin of an organism's genome has been regarded in recent years as the cause for a certain genetic instability inherent in such genomes. Using the model of amphidiploids and introgressive Aegilops wheat lines, evidence is given for confirming the facts of permanent alterations in their genomes, which were revealed at the phenotypic level in studies of morphological traits and biochemical character in successive generations of certain genotypes, as well as those of F_1 and F_2 hybrids. The actions of both trans-posons and intrachromosomal rearrangements caused by the 4S~(sh) gametocidal chromosome may be considered as the causes of such variability.
机译：近年来，生物体基因组的杂种起源被认为是这种基因组固有的某些遗传不稳定的原因。使用二倍体和渐进性埃及伊蚊的品系模型，提供了证据来证实其基因组的永久性改变，这些事实在表型水平上已在某些基因型的连续世代中的形态特征和生化特性研究中得到揭示。 F_1和F_2杂种的那些。由4S〜（sh）杀配子染色体引起的转座子和染色体内重排的作用都可以被认为是造成这种变异的原因。

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