Sex Expression and Growth in Muskmelon

Brantley, B. B.; Warren, G. F.

doi:10.1104/pp.35.5.741

Cited by 24 publications

(7 citation statements)

References 12 publications

(11 reference statements)

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“…Several similar studies (e.g. Freeman & Vitale, 1985;Brantley & Warren, 1960) were done on cultivated plants which probably underwent genetic changes in sex determination and expression under domestication. Overall, it seems that the exceptional cases, together with manipulated experiments, moved attention from the basic question: how effective is the maintenance of sex determination and expression, and how stable are the sexual morphs in natural populations of dioecious plants.…”

Section: Discussionmentioning

confidence: 97%

Sex ratio and gender stability in the dioecious plants of Israel

Rottenberg

1998

Botanical Journal of the Linnean Society

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The hypothesis that in dioecious plants genders are usually stable and that the sex ratio is 1:l was tested in the dioecious species of Israel. The flora of Israel comprises some 2500 wild species, among which 43 are dioecious, one gynodioecious and one androdioecious. Forty-one out of these 45 species were examined during 1995-97. These species were examined in 120 populations comprising 7019 individuals, at 81 different localities. The majority of the species (33/41) manifested the expected 1:l sex ratio. Of the eight species deviating from this ratio,' a significant bias was repeatedly scored in five of them. Three other species of the willow family manifested sometimes strongly biased sex ratios or even monomorphic (unisexual) stands, apparently as a result of extensive vegetative cloning. The stability of the male and female morphs was also examined in the 41 species. Only eight individuals (from seven species) out of the 7019 individuals surveyed (0.1%) were found to be bisexual. In addition, in 27 populations belonging to 17 species, 909 males were tagged and revisited in fmiting time, and only three of them (0.3%) were found to set fruits. In addition not a single case of gender reversal between seasons was found. The field survey suggests that in dioecious plants sex determination and expression are usually effectively maintained. The very slight deviations from the 1 : 1 sex ratio and from the distinct male and female morphs suggest that sexual dimorphism in dioecious plants is usually stabile.

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Section: Discussionmentioning

confidence: 97%

Sex ratio and gender stability in the dioecious plants of Israel

Rottenberg

1998

Botanical Journal of the Linnean Society

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“…Sex expression in melon can be modified by external factors, such as mineral nutrition, temperature, water regime, light intensity, photoperiod, mechanical trauma and application of growth regulators (Whitaker 1931, Brantley and Warren 1960, Freeman et al 1980. Growth regulators or phytohormones, especially ethylene / ethrel (Papadopoulou et al 2005, Manzano et al 2008 and gibberellic acid, i.e.GA 3 (Thomas 2008), are mostly used to modify sex expression in melon.…”

Section: Introductionmentioning

confidence: 99%

The effect of growth regulators on sex expression in melon (Cucumis melo L.)

Girek

Prodanovic

Zdravković

et al. 2013

Crop Breed. Appl. Biotechnol.

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“…Modification of sex expression by environmental factors is well known in both monoecious and dioecious plants (Heslop‐Harrison 1957, Nitsch 1965). Particularly well known in this respect are the monoecious cucurbits in which SD and low temperatures are known to favour femaleness, and LD and high temperatures to favour maleness (Nitsch et al 1952, Ito and Kato 1953, Brantley and Warren 1960). Maize exhibits similar photoperiodic responses (Schaffner 1927, Heslop‐Harrison 1961), whereas the opposite responses were observed in Begonia (Heide 1969).…”

Section: Discussionmentioning

confidence: 99%

Environmental control of flowering and sex expression in Carex flava

Heide

2004

Physiologia Plantarum

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The environmental control of flowering and sex expression has been studied under controlled environment conditions in three populations of the sedge Carex flava L. A dual floral induction requirement was demonstrated in all populations. Low temperature (< 12 C) was obligatory for, and short photoperiods strongly enhanced, primary induction and inflorescence initiation. Stem elongation and inflorescence development were promoted by long photoperiods, although most plants developed stunted flower stems also under short day (SD) conditions. Growth vigour, abundance of flowering and primary induction requirements varied widely among the populations, with critical exposure times for full flowering varying from less than 9 to about 12 weeks in SD at 9 C, and from about 9 to more than 15 weeks in long days (LD). Sex expression in the normally male terminal spike was shifted towards femaleness by marginal or incomplete primary induction. Primary induction in LD resulted in a complete change to entirely female inflorescences, whereas marginal induction in SD resulted in a similar sex reversal in some plants. The results are discussed in relation to environmental and hormonal factors known to modify sex expression in flowering plants and the significance of the results to Carex systematics and classification.

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Sex Expression and Growth in Muskmelon

Cited by 24 publications

References 12 publications

Sex ratio and gender stability in the dioecious plants of Israel

Sex ratio and gender stability in the dioecious plants of Israel

The effect of growth regulators on sex expression in melon (Cucumis melo L.)

Environmental control of flowering and sex expression in Carex flava

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