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A study of relationship between the lodging and some morphological characters with regard to early selection for lodging resistance of spring barley hordeum vulgare l. ii. an analysis of relationship between the lodging grade and some morphological stem and spike characters at beginning of heading



A study of relationship between the lodging and some morphological characters with regard to early selection for lodging resistance of spring barley hordeum vulgare l. ii. an analysis of relationship between the lodging grade and some morphological stem and spike characters at beginning of heading



Genetica Polonica 26(4): 471-478



This paper presents results of an analysis of the relationship between the lodging grade and some morphological stem and spike characters at the beginning of heading in spring barley plants. It has been found that at the beginning of heading there occur a high positive (linear) relationship between the lodging grade and the length of the second lower internode and spike density, and a somewhat smaller relationship between the loging grade and the diameter of the first and second internodes (expressed by regression curve of the 2nd degree). On the basis of microscopic investigations it has been revealed that lodging-resistant genotypes distinguish by a larger filling of the stem and by a thicker layer of the sclerechyma fibres than lodging genotypes. The obtained results permit to infer that selection for lodging resistance may be started already at the beginning of heading and that such characters, as the length of the second internode, spike density and the diameter of the first and second internodes will be adequate markers of that selection.

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Accession: 004633026

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Related references

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