Effectiveness of Bumble Bees as Pollinators for Eggplants Grown in Unheated Greenhouses

Abak, K.; Özdogan, A.O.; Daşgan, Hayriye; Derin, K.; Kaftanoğlu, Osman

doi:10.17660/actahortic.2000.514.22

Cited by 20 publications

(18 citation statements)

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“…Energy-saving techniques have been introduced in eggplant production in the greenhouse to reduce its costs and to increase its efficiency. Among modern techniques, the most promising are grafting (Khah 2005), introduction of bumblebees as pollinators (Abak et al 2000), use of growth regulators (Pessarakli and Dris 2003), use of parthenocarpic eggplant cultivars (Acciarri et al 2002), optimization of growth conditions in relation to phase of plant development (Kurklu et al 1998), and plant pruning (Ambroszczyk et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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

Ambroszczyk

Cebula

Sękara

2008

Folia Horticulturae

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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 F 1 ' 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 Eggplant pruning 4 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.

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Section: Introductionmentioning

confidence: 99%

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

Ambroszczyk

Cebula

Sękara

2008

Folia Horticulturae

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“…Under the natural conditions, an average of 43 % fruits attains maturity with a range of variation (27 % to 57 %) among different variants of annatto (Joseph et al 2012). Bombus bees, which were registered in our field observations, are considered by Abak et al (2000) to be efficient pollinator agents due to their intense activity and increased vibration. These authors showed that Bombus pollination increased fruit size and the number of seeds per fruit in eggplant (Solanum melongena).…”

Section: Resultsmentioning

confidence: 80%

Floral, reproductive biology and morphological variation in annatto (Bixa orellana L.)

2020

EJPB

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The present study aimed at evaluating the genetic variability of different germplasms and comparative effectiveness of morphological descriptors, floral and reproductive biology of three CPTs of annatto viz.,Tamil Nadu (green fruited), Kerala (red fruited), Karnataka (dark red fruited) at department of Forest Biology and Tree improvement, Forest College and Research Institute, Mettupalayam during 2017-19. A record on sequence of flowering ascends along the latitudes. The sequence of flowering is top to bottom (basipetal) that is the development, maturation or opening from the apex towards the base in the sequence. It commenced from the southern side to the south eastern side. The colour of the flower is whitish pink in Tamil Nadu, moderate pink in Karnataka and dark pink in Kerala and this floral colour polymorphism suggests that pollinators (mainly bumble bees and ants) are the primary selective agents which influence flower colour. The stain I-KI showed 95 % pollen viability and it is found that the viability of the pollen grains decreased after four hours from pollen dehiscence and tricolporate pollen was observed in annatto. The observation on fruit set indicated that bixa plant can have both self-and cross-pollination. Fruit maturity takes place 80-95 days counting from the day of pollination to fruit dehiscence. The shape of the fruit resembles rounded oblong pyriform. Maximum seed production was recorded in the red fruited (collected from Karnataka) (113.12 g) plant followed by the dark red fruited plant (Kerala) and the green fruited variant (TN).

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“…Bombus bees, which were registered in our field observations, are considered by Abak et al (2000) to be efficient pollinator agents due to their intense activity and increased vibration. These authors showed that Bombus pollination increased fruit size and number of seeds per fruit in eggplant Table 2.…”

Section: Biology Of Reproductionmentioning

confidence: 94%

Cytogenetics and Reproductive Biology of <i>Bixa orellana</i> L. (Bixaceae)

Lombello

Pinto-Maglio

2014

CYTOLOGIA

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Summary Cytogenetic and reproductive assays were carried out on a population of annatto (Bixa orellana) of Southeastern Brazil. The reproductive data indicate that B. orellana is self-compatible but preferentially alogamous and entomophylous. No apomictic fruits were obtained from emasculated flowers. Fruits formed exclusively by self-pollination were smaller and had fewer seeds than those obtained by open pollination, highlighting the importance of pollination for annatto seed production. The meiotic process was analyzed and some abnormalities observed resulted in only some sterile pollen (1.9%) with no significant reduction of fertility. The cytogenetic studies showed the haploid chromosome number n=7 and the diploid number 2n=14, with a remarkable bimodal karyotype. FISH with 45S rDNA and 5S rDNA probes showed that these loci do not occur in synteny. Both probes hybridized in the proximal regions of the short arm of pair 1 (45S) and pairs 4 and 6 (5S). One pair of 5S rDNA sites presented larger signals in FISH than the other pair. These karyological features suggest that fusion of chromosomes and amplification of DNA segments played an important role in karyotype evolution of B. orellana.

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Effectiveness of Bumble Bees as Pollinators for Eggplants Grown in Unheated Greenhouses

Cited by 20 publications

References 0 publications

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

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

Floral, reproductive biology and morphological variation in annatto (Bixa orellana L.)

Cytogenetics and Reproductive Biology of <i>Bixa orellana</i> L. (Bixaceae)

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