Estrogens in 2-chloroethylphosphonic acid induced femaleness ofCucurbita pepo L.

Kopcewicz, Jan; Chrominski, A.

doi:10.1007/bf01931903

Cited by 12 publications

(4 citation statements)

References 8 publications

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“…In young seedlings there was no estrone; when flowers appeared, the content of estrone increased greatly. Similar results have also been obtained in other experiments (Kopcewicz 1972a, b;Kopcewicz and Chrominski 1972;Kopcewicz et al 1973). …”

Section: Discussionsupporting

confidence: 80%

“…, 1979Zhou and Tsao 1982;Wang and Tsao 1986;Simons and Grinwich 1989). Significant increases of endogenous estrogens have also been observed during plant reproduction (Kopcewicz 1971(Kopcewicz , 1972aKopcewicz and Chrominski 1972;Kopcewicz et al 1973;Zhou and Tsao 1982). Methods of identification and determination have ranged from relatively primitive ones like the bioassay and color reaction in early years to very sensitive methods like the GC-MS and RIA in late 1970s and 1980s.…”

Section: Introductionmentioning

confidence: 91%

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The occurrence of estrogens in relation to reproductive processes in flowering plants

Zhang

Yang

Tsao

1991

Sexual Plant Reprod

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Estrogens, a group of steroidal sex hormones, were determined in pollen, styles or whole pistils using a highly sensitive and specific radioimmunoassay (RIA) and found to be present at levels between 10-11 and 10-lo g/g FW. In the style of Lilium davidii Duch., the levels of total estrogen decreased after self-pollination of the open flower. After bud pollination, which partly overcame incompatibility, the levels of both estradiol and total estrogen increased. The levels of estradiol and total estrogen in the pistils of Brassica pekinensis Rupr. increased after compatible pollination during the first 3 days following pollination and decreased thereafter when the data were expressed on a FW basis. These results suggest that estrogens are to some extent associated with the reproductive processes.

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Section: Discussionsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 91%

The occurrence of estrogens in relation to reproductive processes in flowering plants

Zhang

Yang

Tsao

1991

Sexual Plant Reprod

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“…In Ecballium elaterum, apical application of oestrogens increased both the number of flowers produced and the female:male flower ratio (Kopcewicz, 1971c). An ethylene substitute, CEPHA, promoted femaleness in Cucurbita pepo, and higher oestrogen levels were found in induced female plants than in controls; also, the oestrogen level decreased as male flowers developed (Kopcewicz and Chrominski, 1972).…”

Section: Sex Expressionmentioning

confidence: 95%

“…In the reverse experiments, kinetin increased and ABA decreased the oestrogen fraction from bean (Kopcewicz, 1972a) but IAA (Kopcewicz, 1972a) and GA (Kopcewicz, 1971a) had no effects. CEPHA (ethylene)-induced femaleness in Cucurbita pepo was accompanied by increased oestrogen levels (Kopcewicz and Chrominski, 1972).…”

Section: Endogenous Growth Regulatorsmentioning

confidence: 99%