Abstract
A fasciated flower stem character arose spontaneously during development of the red beet ( Beta vulgaris L.) inbred line W411. The fasciated character is manifest by a flattened flower stem with petioles coalesced into a twisted, ribbonlike appearance. No fasciation is present in the vegetative stem or petioles. An inheritance study was conducted to determine the genetic control of flower stem fasciation. The inbred line W411 was used both as a male and female parent in crosses with four red beet inbred lines. Segregating progenies in both the BC 1 and F 2 generations were developed and scored for the fasciated flower stem character. Variable expression of the fasciated flower stem phenotype was observed in these progenies; however, the presence of flattened flower stems at the stem/hypocotyl junction was unequivocal. Chi-square goodness-of-fit tests in both the BC 1 and F 2 generations did not deviate significantly from expected ratios for a monogenic recessive character for each genetic background. No reciprocal differences were detected for any cross in this group of four inbred lines, which suggests the lack of maternal effect for the fasciated character. The symbol ffs is proposed to describe the genetic control of the fasciated flower stem phenotype.
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Claims 5
Claim · model-written summary
Flower stem fasciation arose spontaneously in red beet inbred line W411.
Verbatim
e0“A fasciated flower stem character arose spontaneously during development of the red beet ( Beta vulgaris L.) inbred line W411”
Claim · model-written summary
The fasciated flower stem phenotype fits a monogenic recessive inheritance in the BC 1 and F 2 generations.
Verbatim
e0“A fasciated flower stem character arose spontaneously during development of the red beet ( Beta vulgaris L.) inbred line W411”
e1“Chi-square goodness-of-fit tests in both the BC 1 and F 2 generations did not deviate significantly from expected ratios for a monogenic recessive character for each genetic background”
Claim · model-written summary
Expression of the fasciated flower stem phenotype was variable in the progenies.
Verbatim
e0“A fasciated flower stem character arose spontaneously during development of the red beet ( Beta vulgaris L.) inbred line W411”
e2“Variable expression of the fasciated flower stem phenotype was observed in these progenies”
Claim · model-written summary
Flattened flower stems at the stem/hypocotyl junction were unequivocally present.
Verbatim
e0“A fasciated flower stem character arose spontaneously during development of the red beet ( Beta vulgaris L.) inbred line W411”
e3“the presence of flattened flower stems at the stem/hypocotyl junction was unequivocal”
Claim · model-written summary
No reciprocal differences were detected among four red beet inbred lines, indicating no maternal effect.
Verbatim
e0“A fasciated flower stem character arose spontaneously during development of the red beet ( Beta vulgaris L.) inbred line W411”
e4“No reciprocal differences were detected for any cross in this group of four inbred lines, which suggests the lack of maternal effect for the fasciated character”