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Diploid Cultivar (diploid + cultivar)

Distribution by Scientific Domains
Life Sciences100%

Selected Abstracts

Isolation and characterization of microsatellite loci from a commercial cultivar of Musa acuminata

MOLECULAR ECOLOGY RESOURCES, Issue 2 2006
SILVANA CRESTE
Abstract A genomic library from the commercial diploid cultivar ,Ouro' (Musa acuminata), enriched for CT- and GT-repeats, was used to isolate and characterize 23 microsatellite loci. These loci were tested in 10 Musa genotypes, representing various Musa genomic groups with distinct ploidy level. The number of alleles per locus ranged from one to seven, and 20 loci were highly informative. Four loci appeared to amplify B genome-specific alleles, while three loci seemed to be absent in the B genome. The polymorphism revealed by these loci will be extremely useful for genetic mapping, marker-assisted selection, germplasm characterization and evolutionary studies in Musa. [source]

Variation of Apigenin Quantity in Diploid and Tetraploid Chamomilla recutita (L.) Rauschert

PLANT BIOLOGY, Issue 4 2000
vehlíková
Abstract: Apigenin, a pharmacologically important flavonoid of the chamomile plant, was analyzed at two ploidy levels during a three-year period. This flavonoid accumulates in the ligulate florets of the anthodium. Higher percentages of apigenin were found in the ligulate florets of a diploid cultivar, in comparison with tetraploid plants. However, when the total apigenin (mg of compound) in the anthodium was evaluated, tetraploid individuals accumulated significantly more flavonoid. Moreover, in contrast to morphological quantitative characteristics of the anthodium, which varied significantly in different years, apigenin percentage in the ligulate florets was constant and not influenced by environmental conditions. Apigenin content was also found to change during inflorescence ontogeny. It represents the highest percentage of dry mass in young developing florets and anthodia of both cultivars. The total apigenin content of the anthodium, however, increases during flowering, although at later stages apigenin forms only a minor part of ligulate floret and anthodium dry mass. [source]

Amplified fragment length polymorphism analysis in diploid cultivars of rhodesgrass

PLANT BREEDING, Issue 1 2001
B. E. Ubi
Abstract The amplified fragment length polymorphism (AFLP) technique was applied to detect genetic variation in a sample of 47 plants representing 12 diploid cultivars of rhodesgrass. In this analysis, 50±91 easily scorable fragments could be detected in a single reaction. Each of the individual plants was uniquely identified by a combination of three primer pairs and an 80.2% level of polymorphism was obtained. Large amounts of genetic variation were present within all the cultivars. The results showed that AFLPs could be a robust technique for genome analysis in rhodesgrass with a promising potential as a breeding tool. [source]