THE EFFECT OF ETHREL ON THE DURATION OF FLOWERING OF MALE FLOWERS SQUASH PLANTS WITH DIFFERENT GENETIC EXPRESSIVENESS OF FLOWER GENDER IN THE KRASNODAR REGION CONDITION
https://doi.org/10.18619/2072-9146-2016-3-32-38
Abstract
Depending on the genotype of monoecious plants Cucurbitaceae family may have different gender expressions: predominantly female, mixed and predominantly
male type of flowering. However, the degree of sexual differentiation can be changed
under the influence of abiotic and endogenous factors. Among the chemicals that affect the level of female flowering in pumpkin crops, preparations based on 2-chloroethylphosphonic acid (Ethephon or Etrelle) are the most promising for hybrid seed production. Study of plant response of squash Cucurbita pepo var. giromontina with varying sex expressions on the treatments with Etrelle revealed common conformities and specificities of preparation action in the condition of Krasnodar region. It is shown the use of treatment once is not effective even if the high concentration range, 500-1100 mg/L, was taken. On gender switch was effectively influenced successive plant treatments with Etrelle at stages of 3-5 true leaves in a wide concentration range from 250 to 700 mg /L., where the restraining was that the start of male flower blossoming was 14-25 days after female flower blossoming. K69 line with predominantly female flowering was more responsive to the variation of concentration and frequency of treatments whereas the line K49 with male flowering was less responsive to the frequency of treatments. It is shown that in the range of effective concentrations, Etrelle may have phytotoxic effects on the growth and development of squash plants at the time of restraining flowering of male flowers. It is important to ake that into account when choosing a regime of preparation treatments for chemical castration of maternal forms in hybrid seed production of this crop.
male type of flowering. However, the degree of sexual differentiation can be changed
under the influence of abiotic and endogenous factors. Among the chemicals that affect the level of female flowering in pumpkin crops, preparations based on 2-chloroethylphosphonic acid (Ethephon or Etrelle) are the most promising for hybrid seed production. Study of plant response of squash Cucurbita pepo var. giromontina with varying sex expressions on the treatments with Etrelle revealed common conformities and specificities of preparation action in the condition of Krasnodar region. It is shown the use of treatment once is not effective even if the high concentration range, 500-1100 mg/L, was taken. On gender switch was effectively influenced successive plant treatments with Etrelle at stages of 3-5 true leaves in a wide concentration range from 250 to 700 mg /L., where the restraining was that the start of male flower blossoming was 14-25 days after female flower blossoming. K69 line with predominantly female flowering was more responsive to the variation of concentration and frequency of treatments whereas the line K49 with male flowering was less responsive to the frequency of treatments. It is shown that in the range of effective concentrations, Etrelle may have phytotoxic effects on the growth and development of squash plants at the time of restraining flowering of male flowers. It is important to ake that into account when choosing a regime of preparation treatments for chemical castration of maternal forms in hybrid seed production of this crop.
About the Authors
R. A. Gish
Kuban State Agrarian University
Russian Federation
Russian Federation
K. O. Chaykin
LTD «Research Institute of Vegetable Growing Greenhouse»
Russian Federation
Russian Federation
References
1. Байдулов Э.В., Пискунова Н.А., Яковлева Е.Н., Воробьева Н.Н. Этрел влияет на рост и развитие кабачка и тыквы // Картофель и овощи. – 2008.– №3. – С.33.
2. Долженко М. В. Создание скороспелых гетерозисных гибридов F1 кабачка для Нечерноземной зоны России//Автореферат диссертации, 2009
3. Дютин К.Е. Некоторые проблемы современной селекции бахчевых культур //Селекция и семеноводство овощных культур в 21 веке: Сб. ст. М., 2000. – С. 239-240.
4. Коротцева И.Б., Кочеткова Л.А. Влияние пола отцовской формы на выраженность этого признака у гибридов F1 огурца //Современное состояние и перспективы развития селекции и семеноводства овощных культур: Сб. ст. М., 2005. – С. 111-115.
5. Кулаева О.Н. Этилен в жизни растений // Соросовский образовательный журнал. 1998.-N 11.-С.78-84.
6. Сутулова, В.И. Определение потенциальной продуктивности огурца при воздействии регуляторами роста. // Докл. ВАСХНИЛ. – 1981. - № 5. - С. 43-44.
7. Чайкин К.О. Регулятор роста Этрел в гибридном семеноводстве кабачка // Гавриш. – 2015.-№ 3.-С.52-55.
8. Cantliffe D.J. Alteration of sex expression in cucumber due to changes in temperature, light intensity, and photoperiod // J. Amer.Soc. Hort. Sci. – 1981. – Vol. 106. – №2. – P. 133-136.
9. Lower L.R., Pharate D.M., Horst E.K. Effects of silver nitrate and gibberellic acid on gynoecious cucumber // Cucurbit Genet. Coop. Rpt. – 1978. – Vol. 1. – P. 8-9.
10. Rudich J., Halevy A.H., Kedar N. Ethylene evolution from cucumber plants as related to sex expression // Plant Physiology. – 1972. – Vol. 49. – №6. – P. 998-999.
11. Testi R, Lercari B. Aspettitecnicidellaproduzione del semeibrido di zucca da zucchini (Cucurbita pepo L.) //SementiElette, 1977ю –Т.23. – №1. – С.45-49.
12. Доспехов Б.А. Методика полевого опыта. - М.: Изд-во «Колос», 1985. – 350 с.
Review
For citations:
Gish R.A., Chaykin K.O. THE EFFECT OF ETHREL ON THE DURATION OF FLOWERING OF MALE FLOWERS SQUASH PLANTS WITH DIFFERENT GENETIC EXPRESSIVENESS OF FLOWER GENDER IN THE KRASNODAR REGION CONDITION. Vegetable crops of Russia. 2016;(3):32-38. (In Russ.) https://doi.org/10.18619/2072-9146-2016-3-32-38
Views:
917
Email this article 