Department of Genetics, Biology Center, University of Groningen, NL-9751, NN Haren, The Netherlands.
Theor Appl Genet. 1984 May;68(1-2):43-52. doi: 10.1007/BF00252310.
Genetic variation in leaf and inflorescence morphology and in generative development within the species Plantago major has been analysed by means of crosses between members of two different subspecies. The variable characters chosen are supposed to be important for determining the ecological differences between the subspecies and other ecotypes. The analyses of F2's indicated that a substantial number of loci controlling the above mentioned characters are situated near the Pgm-1 locus, forming a gene complex. This gene complex can exist in at least three different forms in ssp. pleiosperma, ssp. major lawn type and ssp. major roadside type, respectively. In addition, some important factors for ecotypic differentiation are situated in the neighbourhood of the Got-1 locus and in a linkage group containing three other allozyme loci. These linkages between allozyme loci and fitness-affecting loci can explain the restriction of some enzyme alleles to a particular subspecies.
通过对两个不同亚种成员之间的杂交，分析了车前草属植物叶和花序形态以及生殖发育的遗传变异。选择的可变特征被认为对确定亚种和其他生态型之间的生态差异很重要。对 F2 的分析表明，控制上述特征的大量基因座位于 Pgm-1 基因座附近，形成一个基因复合体。这个基因复合体在 ssp. pleiosperma、ssp. major 草坪型和 ssp. major 路边型中分别存在至少三种不同的形式。此外，生态型分化的一些重要因素位于 Got-1 基因座附近以及包含三个其他同工酶基因座的连锁群中。这些同工酶基因座与影响适应性的基因座之间的连锁可以解释某些酶等位基因对特定亚种的限制。
