A New Genetic Flower Type of the Muscadine Grape

Loomis, N. H.; Williams, C. F.

doi:10.1093/oxfordjournals.jhered.a106748

Cited by 9 publications

(14 citation statements)

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“…De ce fait, l'hypothèse de contamination par du pollen mâle étranger, toujours possible, est à retenir en priorité (ANTCLIFF, 1980). Toutefois, LOO MI S (1948), LOO MI S & WILLIAMS (1954, 1957, dans le sous-genre Muscadinia, ont observé dans la descendance d'une autofécondation d'hermaphrodite l'apparition d'environ 1/4 de mâles. Ce fait très curieux a été jusqu'à présent écarté des constatations propres au sousgenre Euvitis en prétextant que ces 2 sous-genres de Vitis possédaient des hérédités différentes, tout comme est différent le nombre de leurs chromosomes (2n = 38 pour Euvitis ; 2n = 40 pour Muscadinia).…”

Section: Observations De Base Sur L'hérédité Des Stérilités Mâle unclassified

“…L'ampleur de cette apparition, d'une part, et la répétition de cette observation, d'autre part, rendent indubitable que ce fait ne peut être dû à des erreurs de pollinisation ou d'appréciation. Les résultats de Loomis (1948) et de Loomis & WILLIAMS (1954, 1957 sur Vitis rotundifolia concernent donc également Vitis vinifera variété « Counoise » par exemple. Il est donc indispensable de trouver un modèle génétique expliquant, d'une part, les disjonctions classiques et, d'autre part, l'apparition relativement exceptionnelle d'une combinaison allélique dominante dans une descendance de parents présentant une combinaison allélique récessive pour les mêmes fonctions.…”

Section: Observations De Base Sur L'hérédité Des Stérilités Mâle unclassified

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Stérilités mâle et femelle dans le genre Vitis. I. Modélisation de leur hérédité

Carbonneau¹

1983

Agronomie

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En fonction de données nouvelles concernant les caractères sexuels dans le genre Vitis, en particulier la preuve de l'apparition de mâles dans des descendances de croisements entre hermaphrodites, une modélisation générale de l'hérédité des stérilités mâle et femelle est développée. Les résultats fournis par le meilleur modèle expliquent les observations effectuées jusqu'à ce jour et mettent en exergue des phénomènes de multiallélisme et d'épistasie. ,> Mots clés additionnels : Sexe, fleur, vigne, multiallélisme, épistasie. SUMMARY Male and female sterility in the genus Vitis. I. Modeling of their inheritance. A general model of the inheritance of male and female sterility in Vitis has been developed starting from new data on sexual characters in the genus Vitis, and particularly from evidence of the occurrence of males in progenies from crosses between hermaphrodites. The results given by the best model explain the present observations and indicate multiallelic and epistatic phenomena.

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Section: Observations De Base Sur L'hérédité Des Stérilités Mâle unclassified

Stérilités mâle et femelle dans le genre Vitis. I. Modélisation de leur hérédité

Carbonneau¹

1983

Agronomie

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“…Muscadine inflorescences (flowalized by muscadine breeders, most notably in deer clusters) can have 200 or more flowers, but those veloping perfect flowered, higher yielding cultivars flowers generally result in fewer than 30 fruit . (Loomis & Williams, 1957 ;Nesbitt et al ., 1982 ; Components contributing to yield have been stud- Williams, 1954) . ied for several perennial crop species (Way et al ., 1983) including grape (Poole et al ., 1978 ;Shaulis & Pratt, 1965) . The grape studies, however, were not done from a breeding and selection standpoint, nor were they done on muscadine grapes .…”

Section: Introductionmentioning

confidence: 99%

Variation in some yield determining components in muscadine grapes and their correlation to yield

Goldy

1988

Euphytica

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Six Vitis rotundifolia Michx . (muscadine) grape genotypes were measured to determine variation and simple correlations between flower and fruit number/cluster, fruit cluster and individual fruit weight, fruit set and total vine yield . Significant variation was found for each trait, except fruit cluster weight . Range in mean values across selections for each trait were : 72 to 202 flowers/cluster ; 16 to 26 fruit/cluster ; 88 .1 to 112 .2 g/fruit cluster ; 3 .4 to 7 .2 g/fruit ; 11 .3 to 23 .4% fruit set ; and 21 .0 to 71 .0 kg/vine for yield . Simple correlation values ranged from r = 0 .05 for flower number to cluster number to r = 0 .69 for fruit number to cluster weight . No trait was highly correlated to total yield . Therefore, to increase yield in muscadines it appears best to select for total yield and not for components contributing to yield .

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“…It is expected that when these clones are used as parents in crosses to females they will produce progeny that are entirely hermaphroditic, and would thus be superior parents. Although this cross has not yet been carried out, Loomis and Williams (1957) previously identified a hermaphrodite derived from a self of the hermaphroditic cultivar Dearing, which appeared to be homozygous for the hermaphroditic character and produced entirely hermaphroditic progenies in crosses to female cultivars. We expect these markers to be used by breeding programs both in planning crosses and selecting seedlings to increase efficiency.…”

Section: Discussionmentioning

confidence: 99%

Development and Characterization of Molecular Markers Associated with Female Plants in Muscadine Grape

Conner

Catotti

et al. 2017

J. Amer. Soc. Hort. Sci.

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Muscadine (Vitis rotundifolia Michx.) vines may be male (M), female (F), or hermaphroditic (H). Male flowers have only filaments and anthers, whereas female and hermaphroditic flowers are morphologically perfect. Female flowers are distinguished from hermaphroditic flowers by their reflexed stamens (as opposed to upright) and nonfunctional pollen. Primers derived from previously identified candidate genes located at the sex locus of Vitis vinifera L. were used to generate amplicons from M, F, and H muscadine cultivars. Sequence analysis of the amplicons revealed insertion/deletion (indel) polymorphisms in a trehalose-6-phosphate phosphatase (TPP) gene (VR006) and a WRKY transcription factor 21 gene (VR009). Primers were designed to create diagnostic markers for each indel polymorphism. Associations between the marker alleles and the plant sex trait were examined in a wide range of muscadine germplasm and in segregating populations derived from F × H, F × M, and H × H crosses. VR006 produced a codominant marker that was able to differentiate the female-associated allele from the male- and hermaphroditic-associated alleles. The marker was able to detect female plants and will be suitable for screening breeding program progenies. VR009 was able to detect the presence of the female allele in most germplasm, but a crossover event appears to have separated the marker from the sex locus in some germplasm. As shown in previous muscadine genetic studies, H × H-derived populations produced male seedlings. Marker analysis of these populations indicates that male flowers only occur in seedlings which are heterozygous for F- and H-associated marker alleles and inheritance of flower type in muscadine remains unclear.

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A New Genetic Flower Type of the Muscadine Grape

Cited by 9 publications

References 0 publications

Stérilités mâle et femelle dans le genre Vitis. I. Modélisation de leur hérédité

Stérilités mâle et femelle dans le genre Vitis. I. Modélisation de leur hérédité

Variation in some yield determining components in muscadine grapes and their correlation to yield

Development and Characterization of Molecular Markers Associated with Female Plants in Muscadine Grape

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