HYDROGEN ION CONCENTRATION AND SEXUAL EXPRESSION IN <i>LYCHNIS DIOICA</i> L

Jf, Stanfield

doi:10.1104/pp.12.1.151

Cited by 6 publications

(2 citation statements)

References 20 publications

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“…The pistillate plants show a greater oxidase activity, lower sugar content, and a higher pH than do the staminate plants. As noted elsewhere (Stanfield, 1937), the determination of the pH of tissues in flowers of Lychnis showed a correlation between the pH and oxidase activity in these organs. In a series of determinations of oxidase activity on Spinacia Loehwing (1933) found the pistillate plants higher in the early stages of blooming, but the condition was definitely reversed in the two older stages tested.…”

supporting

confidence: 69%

Certain Physico‐chemical Aspects of Sexual Differentiation in Lychnis Dioica

Stanfield¹

1937

American J of Botany

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supporting

confidence: 69%

Certain Physico‐chemical Aspects of Sexual Differentiation in Lychnis Dioica

Stanfield¹

1937

American J of Botany

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“…In earlier publications (17,18) the writer has summarized certain quantitative determinations ancd their relationto sex in dioecious plants and has presented analytical data relative to the physico-chemical aspects of sexual expression in Lychnis dioica L. Suibsequenit to this report, the cogent work by LOEHWING (15) has given the most comprehensive integration of data relative to the physiological aspects of sex in anoiosperms to be found in the literature. Since that time additionial investigations have been reportedl (6,8,9,10,11,12,13,16,21).…”

mentioning

confidence: 99%

Chemical Composition of Roots and Tops of Dioecious Lychnis in Vegetative and Flowering Phases of Growth

Stanfield

1944

Plant Physiol.

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In viewv of the currenit interest in problemiis of nutritional ontogeniy ancd the evident influeniee of reproductive processes thereon, experimental data on the composition of the dioeeious species, Lychlnis dioica L., are presented. Dioecious forms appear to have the advantage in studies of this type in permitting recogniitioni of coimipositionial and metabolic differenlees associated with sex expression. Bv virtue of their perennial habit, individual plants of Lychnis can be studied througohout their growth eele, thus permitting repeated comparison of the nutritionial trencd in each of the two sexes in the vegetative aind reproductive stages of a singcle plant. The fact that inception of the reproductive processes appears to exert a marked ilmetabolic effect upon the entire parent sporophyte, iiiade it seem advisable to include a study of the root systems of the two sexes in order to determiine compositional alterations and top-root interrelationships distinguishing vegetative and reproductive plants. Observ-ations ancd analyses thus include both roots and tops of plants in the vegetative (rosette or pre-blooming) as well as the early flowering stage. The former is of particular interest sinee few studies exist in which initial tests oni roots of dioecious plants in the vegetative stage have been interpreted in the light of ultimiiate sex expression.In earlier publications (17, 18) the writer has summarized certain quantitative determinations ancd their relationto sex in dioecious plants and has presented analytical data relative to the physico-chemical aspects of sexual expression in Lychnis dioica L. Suibsequenit to this report, the cogent work by LOEHWING (15) has given the most comprehensive integration of data relative to the physiological aspects of sex in anoiosperms to be found in the literature. Since that time additionial investigations have been reportedl (6,8,9,10,11,12,13,16,21). MethodsVigorous plants of native species, Lych nis dioica L., were growniunder ordinary, seasonal greenhouse concditions in pots containing well-fertilized loam soil at a meani temperature of 70°F. and an average humidity of approximately 50 per cent. Plants were supplied with city water as needed to maintain favorable growth.Seeds were planted in December and, beginningi at the age of eight weeks, exposed to long days extended to sixteen houirs per day by illumination with Mazda lamps at an intensity of 300 foot candles in order to accelerate flowering and thus permit identification of sex at an early age. The plants were then permitted to returni to a veogetative eonidition by subsequently exposing theim for one month to 10-hour day nuider natural day-light. After one 377 www.plantphysiol.org on June 21, 2016 -Published by www.plantphysiol.org Downloaded from

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Inflorescence Patterns and Sexual Expression in Begonia Semperflorens

Matzke

1938

American J of Botany

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HYDROGEN ION CONCENTRATION AND SEXUAL EXPRESSION IN LYCHNIS DIOICA L

Cited by 6 publications

References 20 publications

Certain Physico‐chemical Aspects of Sexual Differentiation in Lychnis Dioica

Certain Physico‐chemical Aspects of Sexual Differentiation in Lychnis Dioica

Chemical Composition of Roots and Tops of Dioecious Lychnis in Vegetative and Flowering Phases of Growth

Inflorescence Patterns and Sexual Expression in Begonia Semperflorens

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