The relationship of 5 hybrids of spring-flowering gladiolus was investigated, based on the morphological, biochemical and bibliographical data.
Compared with cultivars of summar-flowering gladiolus, cultivars of spring-flowering gladiolus had smaller leaves, flowers, pollens and stomata. Those of ‘Elvira’and‘Comet’, two spring-flowering gladiolus, however, were close to cultivars of summar-flowering gladiolus in size. Starch grains in corms of ‘Robinetta’ and‘Albus’showed large, oblong figures, whereas those of the other cultivars showed small, round figures.
Phenolic-like compounds were extracted from leaf tissue. Some common spots were observed between‘Comet’and‘Charm’, ‘Elvira’and‘Charm’, and ‘Robinetta’ and‘Albus’.‘Robinetta’and‘Albus’showed a poor relationship with the other cultivars.
Flavonoid-like compounds were extracted from perianths.‘Elvira’, ‘Charm’and ‘Robinetta’had spots in common as had‘Elvira’and‘Comet’, or‘Robinetta’and ‘Albus’.‘Albus’showed a poor relationship with‘Comet’or‘Elvira’.
In isozyme banding patterns of esterase, peroxidase and total proteins in corm tissue, ‘Elvira’, ‘Charm’and‘Comet’showed some common bands.‘Robinetta’ and‘Albus’showed very similar patterns, especially in esterase.
Thus, ‘Robinetta’and‘Albus’were very similar to each other in the chemical components, and differed from the other two cultivars, ‘Comet’and‘Elvira’.‘Charm’ was between the two groups as it had some compounds in common with them. This grouping was not contradictory to the grouping based on the morphological and ecological data presented in the previous paper.
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