Abstract

The inheritance of allelic variants of aromatic alcohol dehydrogenase CAD^im (CAD intermediate) and their effect on the severity of plant traits in spring bread wheat (fluorescence of seedling slices, micromorphology, and chemical composition of tissues) were studied. The plants with contrast CAD^im genotypes (homozygotes +/+ and –/–) were used to study the tissue autofluorescence, micromorphology, and chemical composition. The thickness of the straw walls in the CAD^im– genotype is higher than that in the CAD^im+ genotype, which can affect the resistance of wheat plants to lodging. Differences in the chlorophyll content, particularly, in the ratio of chlorophylls A and B, were observed; this probably affects photosynthesis. An increased content of carbonyl groups in the CAD^im+ genotype, as well as differences in the cinnamon monomers of lignin, were found. It follows from these results that CAD^im+ and CAD^im– allelic variants have a significant effect on a number of plant traits and, consequently, that the polymorphism at the CAD^im locus is functional, which enables its use in breeding and biotechnology.

中文翻译：

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芳香醇脱氢酶 CADim 等位基因变异体对春面包小麦 Triticum aestivum L 微形态和化学组织指标的影响。

摘要

研究了芳香醇脱氢酶 CAD ^im（CAD 中间体）等位基因变体的遗传及其对春面包小麦植物性状（幼苗切片的荧光、微形态学和组织化学成分）严重程度的影响。具有对比 CAD ^im基因型（纯合子 +/+ 和 –/–）的植物用于研究组织自发荧光、微形态学和化学成分。CAD ^im-基因型的秸秆壁厚度高于CAD ^im+基因型，这会影响小麦植株的抗倒伏能力。叶绿素含量的差异，特别是叶绿素A和B的比例，被观察到；这可能会影响光合作用。发现 CAD ^im+基因型中羰基含量增加，以及木质素肉桂单体的差异。从这些结果可以看出，CAD ^im+和 CAD ^im-等位基因变体对许多植物性状具有显着影响，因此，CAD ^im基因座的多态性具有功能性，使其可用于育种和生物技术。