Some notes on fragaria

Richardson, C. W.

doi:10.1007/bf02983521

Cited by 15 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The evidence points to a genetic cause (Hughes, 1989;Rose, 1992). Early studies of strawberry progenies suggested that either a single recessive gene (Richardson, 1920) or more than one gene (Demaree and Darrow, 1937) were responsible for the disorder. The interpretation of segregation ratios is made difficult because Fragaria ×ananassa is an autoallopolyploid (Senanayake and Bringhurst, 1967) and seedlings classed as unaffected may eventually show symptoms.…”

Section: Methodsmentioning

confidence: 99%

Field Performance of June Yellows-affected Clones of `Blomidon' Strawberry

Jamieson¹,

Sanford²

1996

HortSci

View full text Add to dashboard Cite

Clones of `Blomidon' strawberry (Fragaria × ananassa Duch.) exhibiting a range of June yellows symptoms were grown in field plots to measure effects on productivity and fruit characteristics. Self-pollinated seedlings grown from these clones were evaluated for symptom expression as an additional measure of severity of June yellows. Large differences in yields were recorded among clones, ranging from 1.9 to 14.7 t·ha–1 in 1994 and 8.4 to 28.3 t·ha–1 in 1995. Clones with severe symptoms produced smaller fruit than clones with slight symptoms in 1994 but not in 1995. Small differences existed for the titratable acidity of the fruit but not for soluble solids concentration. The frequency of normal green seedlings among selfed progeny ranged from 48% to 98% and was negatively correlated with symptom severity ratings of the parent clones. Severity ratings and selfed seedling abnormality rates were good predictors of fruit yield. No clones of `Blomidon' were free of June yellows.

show abstract

Section: Methodsmentioning

confidence: 99%

Field Performance of June Yellows-affected Clones of `Blomidon' Strawberry

Jamieson¹,

Sanford²

1996

HortSci

View full text Add to dashboard Cite

show abstract

“…In the 1920s, symptoms resembling June yellows were found in England (Richardson, 1920(Richardson, . 1923 and the USA (Alderman, 1926).…”

Section: Early Recordsmentioning

confidence: 99%

“…The possibility of a 'genetic' cause Richardson (1920) reported on the segregation of variegation in the progeny of the cross (Filbert Pine X King of the Earlies) x(Royal Sovereign X Latest of All). Of the surviving progeny he found that 46 were normal green plants while 14 were variegated (affected by June yellows).…”

Section: The Possibility Of a Nutritional Causementioning

confidence: 99%

Strawberry June yellows–a review

Hughes¹

1989

Plant Pathology

View full text Add to dashboard Cite

The Inheritance of Flower Types and Fertility in the Strawberry

Valleau¹

1923

American J of Botany

View full text Add to dashboard Cite

In a study of sterility in the strawberry begun by the writer in 1914, a portion of the work was directed toward determining the underlying factors causing "nubbins" or imperfectly developed berries. These are commonly produced from the tertiary and later flowers of the inflorescence of many cultivated varieties of strawberry and result in considerable loss of fruit toward the close of the picking season.A study of the fruiting habit of the wild American strawberries mid of the cultivated varieties proves conclusively that the production of nubbins is directly related to pistil sterility, and that pistil sterility is decidedly more prevalent on plants with certain flower types than on others (7). Therefore, since the question of fruitfulness in the strawberry is primarily one of sex, a thorough knowledge of the flower types and of their inheritance is essential to the strawberry breeder if his work is to be other than blind crossing and selecting for chance high-yielding clones.The work on the inheritance of flower types in the strawberry has been discontinued by the writer, but, as some facts have been determined, he presents the data obtained and the conclusions drawn from them. FLOWER TYPES IN THE STRAWBERRYIn the cultivated strawberry, pistillate and perfect flowers are commonly encountered. The pistillate flowers bear small abortive stamens which have never been observed by the writer to produce pollen. The pistils are generally very fertile, producing perfect fruits from most of'the flowers and comparatively few nubbins. The perfect-flowered varieties develop anthers which produce varying amounts of normal pollen. As a class, these varieties are less fertile than the pistillate varieties and produce a higher percentage of nubbins and of sterile or male flowers (7).The wild species of American strawberries may be divided into two types: those which bear only perfect flowers, as Fragaria americana, and those which are dioecious. The pistils of the former species are very fertile, and nubbins or sterile flowers are seldom seen. The dioecious types produce pistillate plants and plants which apparently are hermaphrodites but are in fact staminates. The pistils of the pistillate clones are usually fertile, but the pistils of the staminate clones are rarely so, and the few berries

show abstract

Some notes on fragaria

Cited by 15 publications

References 0 publications

Field Performance of June Yellows-affected Clones of `Blomidon' Strawberry

Field Performance of June Yellows-affected Clones of `Blomidon' Strawberry

Strawberry June yellows–a review

The Inheritance of Flower Types and Fertility in the Strawberry

Contact Info

Product

Resources

About