Seasonal change of fruit setting in eggplants (Solanum melongena L.) caused by different climatic conditions

1990 ◽  
Vol 44 (1-2) ◽  
pp. 55-59 ◽  
Author(s):  
Wenquan Sun ◽  
Debin Wang ◽  
Zhaozhi Wu ◽  
Jiaren Zhi
Keyword(s):  
Seasonal Change ◽  
Solanum Melongena ◽  
Climatic Conditions ◽  
Fruit Setting

scholarly journals Style length and flower morphology of three eggplant (Solanum melongena L.) cultivars from Iran affected by fruit load

2021 ◽  
Vol 117 (3) ◽  
pp. 1
Author(s):  
Sedighehsadat KHALEGHI ◽  
Bahram BANINASAB ◽  
Mostafa MOBLI
Keyword(s):  
Solanum Melongena ◽  
Climatic Conditions ◽  
Flower Morphology ◽  
Style Length ◽  
Greenhouse Condition ◽  
Short Style ◽  
Fruit Setting ◽  
Fruit Harvest ◽  
Do So ◽  
Fruit Load

<p>A common feature of eggplant is its heterostyly. Long-style flowers bear fruits whereas short style ones fail to do so. Heterostyly is influenced by some factors such as genotype, climatic conditions and fruit load. In this study three eggplant cultivars from Iran were cultivated under greenhouse condition. The influence of presence of fruit (two fruits and four fruits) or absence of that on style length and some other flower morphological was studied in three positions of single, basal and additional. The presence of fruit, specially four fruits reduced style length, stigma width as well as mass of flower, pistil and stigma compared to the control in all times during fruit growth, and after fruit harvest they increased again. Fruit load didn’t affect the number of stamen and stamen length. These effects were observed in all three positons of single, basal and additional flowers of all three cultivars. Generally this study showed that fruit load has decreasing effect on style length and size of flowers forming after fruit setting, which reversed after fruit harvesting.</p>

scholarly journals Biostimulant Application Enhances Fruit Setting in Eggplant—An Insight into the Biology of Flowering

Agronomy ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 482
Author(s):  
Alicja Pohl ◽  
Aneta Grabowska ◽  
Andrzej Kalisz ◽  
Agnieszka Sękara
Keyword(s):  
Fruit Set ◽  
Solanum Melongena ◽  
Pollen Tubes ◽  
Stage Of Development ◽  
Fruit Setting ◽  
Generative Phase ◽  
Positive Effect ◽  
Final Effect ◽  
Generative Stage ◽  
Insight Into

Eggplant (Solanum melongena L.) is a warm climate crop. Its cultivation extends to temperate regions where low temperatures can affect the course of the generative phase, which is primarily sensitive to abiotic stress. The novelty of the present investigation consisted of characterising the heterostyly, pollination, and fertilisation biology of eggplants in field cultivations, which provided a basis for explaining the effect of a protective biostimulant on these processes. We aimed to investigate the flowering biology of three eggplant hybrids treated with Göemar BM-86®, containing Ascophylum nodosum extract, to determine the crucial mechanisms behind the increased flowering and fruit set efficiency and the final effect of increased yield. The flower phenotype (long, medium or short styled), fruit setting, and the number of seeds per fruit were recorded during the two vegetation periods. The numbers of pollen tubes and fertilised ovules in ovaries were evaluated during the generative stage of development to characterise the course of pollination and fertilisation for all types of flowers depending on the cultivar and biostimulant treatment. The expression of heterostyly depended on the eggplant genotype, age of the plant, fruit load, and biostimulant treatment. Domination by long-styled flowers was observed, amounting to 41%, 42%, and 55% of all flowers of “Epic” F1, “Flavine” F1, and “Gascona” F1, respectively. This flower phenotype contained the highest number of pollen tubes in the style and the highest number of fertilised ovules. The biostimulant had a positive effect on the flower and fruit set numbers, as well as on the pollination efficiency in all genotypes. Ascophylum nodosum extract could be used as an efficient stimulator of flowering and fruit setting for eggplant hybrids in field conditions in a temperate climatic zone.

scholarly journals The effect of shoot training on yield, fruit quality and leaf chemical composition of eggplant in greenhouse cultivation

2008 ◽  
Vol 20 (2) ◽  
pp. 3-15 ◽  
Author(s):  
Anna Magdalena Ambroszczyk ◽  
Stanisław Cebula ◽  
Agnieszka Sękara
Keyword(s):  
Total Yield ◽  
Solanum Melongena ◽  
Early Spring ◽  
Reducing Sugar ◽  
Marketable Yield ◽  
Greenhouse Production ◽  
F1 Hybrid ◽  
Fruit Setting ◽  
High Level ◽  
The University

Abstract The aim of the investigations was to determine the best method of eggplant (Solanum melongena L.) pruning in greenhouse production. The investigations were carried out in 1999 - 2001 in the experimental greenhouse of the University of Agriculture in Krakow, Poland. The ‘Tania F1’ hybrid was used in the early spring-summer production in a heated greenhouse. Plants were pruned to one or two shoots. In the case of two-shoot plants, the second shoot was led out from the first, third, sixth and ninth node. The intense pruning positively affected the PAR conditions in the plant profile. The most effective fruit setting was observed in the intensely pruned plants. The greatest number of fruits was set at the lowest nodes. Pruning affected the total but not marketable yield of fruits. Two-shoot plants with the second shoot led out from the sixth node produced the greatest fruits, both in early and total yield. A high level of reducing sugar was found in the fruits of moderately pruned plants. Fruits of two-shoot plants with the second shoot led out from the sixth node and pruned to one shoot contained the greatest level of L-ascorbic acid. The greatest levels of reducing sugar and starch were found in the leaves of moderately pruned plants, having the best PAR conditions. The method of pruning slightly affected the level of pigments in the eggplant leaves.

scholarly journals Preliminary screening of biostimulative effects of Göemar BM-86 on eggplant cultivars grown under field conditions in Poland

2018 ◽  
Vol 71 (4) ◽  
Author(s):  
Alicja Pohl ◽  
Aneta Grabowska ◽  
Andrzej Kalisz ◽  
Agnieszka Sękara
Keyword(s):  
Preliminary Investigation ◽  
Solanum Melongena ◽  
Field Conditions ◽  
Mineral Contents ◽  
Preliminary Screening ◽  
Yield And Quality ◽  
Fruit Setting ◽  
Almost All ◽  
And Control ◽  
Main Effects

Seaweed extracts are widely used in agriculture as ecological focus substances applied to improve crop growth and quality. One of the primary benefits they bring is increased effectiveness of fruit setting as well as improved stress tolerance, essential for warm-climate crops cultivated in the nonoptimal environmental conditions of Northern and Central Europe. The aim of this study was a preliminary investigation of any genotype-dependent reaction of eggplant cultivars (<em>Solanum melongena</em>) to application of a standardized extract of the seaweed <em>Ascophyllum nodosum</em> (Göemar BM-86) under field conditions in Poland. The only statistically relevant result of this biostimulant was shown for cultivar ‘Flavine’ F<sub>1</sub>, where it positively affected the early crop yield and the number of fruits per plant. Fruit quality attributes, including antioxidant activity, as well as selected mineral contents, increased as an effect of biostimulant spraying. This reaction was specific for the cultivars investigated, and it was confirmed by significant differences in the main effects between biostimulant and control treatments for almost all the properties measured. The use of this <em>A. nodosum</em> extract suggested that there could be an improvement in fruit yield and quality in selected eggplant cultivars under field conditions in the temperate climatic zone.

scholarly journals Pollination, fertilization and fruit formation in eggplant (Solanum melongena L.)

2012 ◽  
Vol 61 (1) ◽  
pp. 107-113 ◽  
Author(s):  
Agnieszka Sękara ◽  
Monika Bieniasz
Keyword(s):  
Cross Sections ◽  
Fruit Set ◽  
Solanum Melongena ◽  
Spatial Separation ◽  
Pollen Tubes ◽  
Diffi Cult ◽  
Fruit Setting ◽  
Fruit Formation ◽  
Number Of Seeds ◽  
Pollination And Fertilization

The aim of the investigations was to determine the regularity of pollination and fertilization as dependent on the phenotype of flower in eggplant. The experiment was conducted in 2005 and 2006 at the Agricultural University in Kraków, Poland. The object of the investigations was eggplant (<i>Solanum melongena</i> L.) 'Epic F<sub>1</sub>', grown in the open field. Flower phenotype (long-, medium- or short-styled), fruit setting and the number of seeds per fruit were recorded on experimental plants during the flowering period. The number of pollen tubes in the middle of the style and the number on fertilized ovules in ovaries were evaluated for all types of flowers. The course of pollination was different in particular types of eggplant flowers. Differences concerned only the number of pollen tubes and fertilized ovules of short, medium- and long-styled flowers and the number of seeds in the fruit. There was not observed any incompatibility in the growth on pollen tubes in the styles of all types of eggplant flowers. Stereomicroscopy observations of cross sections of the ovaries do not show differences in the formation and position of the ovules on the placenta. Short-styled flowers were characterized by significantly lower pollination and fruit set efficiency and they produced fruits with a significantly lower number of seeds. The low number of pollen tubes, fertilized ovules and seeds can be a straight consequence of the morphology of short-styled flowers: small-sized stigmas and spatial separation of anther pores and stigmas, which makes pollination diffi cult.

scholarly journals Promising tomato hybrids for summer-autumn turnover in protected ground in Dagestan

2021 ◽  
pp. 76-81
Author(s):  
P. M. Akhmedova
Keyword(s):  
Climatic Conditions ◽  
High Yield ◽  
F1 Hybrids ◽  
Selling Price ◽  
Net Income ◽  
Fruit Setting ◽  
Commercial Yield ◽  
First Time ◽  
Ground Structures ◽  
Mass Construction

Relevance. The region continues to build new industrial greenhouses every year, as well as mass construction of winter film greenhouses in the farms of the population of Flat and foothill Dagestan. Today, there are more than 250 hectares of them.Methods. Experimental work was carried out in the greenhouse of LLC Agro-AS in 2019-2020. Carried out selection and evaluation of promising hybrids of tomato for the summer-autumn turnover in greenhouses. Studied the duration of interphase periods, estimated the percentage of fruit set in the inflorescence, determined the yield of tomato hybrids, and calculated the most economically promising ones for the natural and climatic conditions of Dagestan.Results. For the first time in the conditions of flat Dagestan, the following experimental data are proved the main elements of industrial technology for obtaining a high yield of tomatoes in protected ground structures using low-volume hydroponic technology on a coconut substrate were experimentally justified; highly productive tomato hybrids were identified for various protected ground structures; F1 hybrids were distinguished by good yield from the second decade of September to the second decade of December; hybrids such as Men-Shuai F1 and Mamston F1 provided 24.3 kg/m2 and 23.1 kg/m2 , respectively, according to the highest percentage of fruit setting, as well as the total and commercial yield. The term of planting seedlings in the substrate in the summer and autumn turnover in the conditions of the suburbs of Makhachkala on July 10 is economically effective, which ensures a high yield and net income per unit area. At the selling price of tomato fruits of 100-110 rubles per 1 kg, the profitability of production, depending on the timing of harvesting and sales, was 100-122%. 

Sign in / Sign up

Export Citation Format

Share Document