scholarly journals Jasa penyerbukan serangga pengunjung bunga pada pertanaman stroberi di Ciwidey, Bandung

2019 ◽  
Vol 16 (2) ◽  
pp. 115
Author(s):  
Siti Masyitah ◽  
Aunu Rauf ◽  
Nina Maryana ◽  
Sih Kahono
Keyword(s):  
Apis Cerana ◽  
Fragaria X Ananassa ◽  
Episyrphus Balteatus

Stroberi (Fragaria x ananassa Duch.) merupakan tanaman hortikultura yang penyerbukannya sebagian tergantung pada serangga. Studi dilaksanakan pada pertanaman stroberi di Ciwidey-Bandung, dengan tujuan untuk memperkirakan kontribusi dari serangga pengunjung bunga terhadap kesuksesan penyerbukan stroberi. Di dalam studi ini kontribusi tersebut dinilai dari kelimpahan spesies serangga pengunjung bunga dan durasi kunjungan pada bunga, serta efisiensi penyerbukan yang diukur dari jumlah akene yang berkembang, bobot, dan ukuran buah, serta waktu matang buah. Hasil studi menunjukkan terdapat empat spesies serangga pengunjung bunga stroberi yang paling umum dijumpai, yaitu dua lalat bunga Episyrphus balteatus (Deg.) (47,3%) dan Melanostoma sp. (33,8%); serta dua lebah Lasioglossum sp. (7,0%) dan Apis cerana Fabricius (5,3%). Durasi kunjungan pada setiap bunga oleh kelompok lalat bunga berlangsung 7,75–10,00 menit, sedangkan oleh kelompok lebah 0,25–0,79 menit. Buah stroberi yang berkembang dari bunga yang mendapat kunjungan tunggal oleh setiap spesies serangga menghasilkan buah dengan jumlah akene berkembang 1,6–1,8 kali lipat lebih banyak, bobot buah 1,8–2,3 kali lipat lebih berat, diameter buah 1,2–1,3 kali lipat lebih lebar, serta waktu matang buah 1–3 hari lebih singkat, dibandingkan dengan buah yang berasal dari bunga yang tidak dikunjungi serangga. Keberadaan lebah dan lalat bunga memberikan sumbangan yang penting terhadap penyerbukan pertanaman stroberi di Ciwidey. Temuan dari penelitian ini berimplikasi terhadap peningkatan hasil panen stroberi melalui pengelolaan serangga penyerbuk.

Pollination biology of Disanthus cercidifolius var. longipes, an endemic and endangered plant in China

Biologia ◽  
2009 ◽  
Vol 64 (4) ◽  
Author(s):  
Yi-An Xiao ◽  
Bijoy Neog ◽  
Yong-Hong Xiao ◽  
Xiao-Hong Li ◽  
Jin-Chun Liu ◽  
...  
Keyword(s):  
Apis Cerana ◽  
Coccinella Septempunctata ◽  
Wind Pollination ◽  
Endangered Plant ◽  
Mass Flowering ◽  
Episyrphus Balteatus ◽  
Insect Pollinators ◽  
Time Courses ◽  
Two Populations ◽  
Flowering Process

AbstractDisanthus cercidifolius Maxim. var. longipes H.T. Chang usually has two inflorescences growing in opposite directions in the axillae, but occasionally three inflorescences grow paratactically. The typical flowering process could be divided into 4 periods: “Pre-dehiscence”, “Initial dehiscence”, “Full dehiscence” and “Withering”. Both the natural population and the planted population had a flowering peak of 15–35 days after the first flower bloomed. There were significant differences between the time courses of flowering of the two populations. Out-crossing is the main breeding system in this species. And autogamy decreases the risk of reproductive failure of this species. The main insect pollinators of D. cercidifolius var. longipes are Episyrphus balteatus de Geer, Scaptodrosophila coracina Kikkawa and Peng, Polistes olivaceus de Geer, Apis cerana Fabricius, Nezara viridula L. and Coccinella septempunctata L., and so on. Among the insects, S. coracina and E. balteatus are the most important and efficient pollinators, but others are inefficient pollinators. Though wind pollination is not efficient, it guarantees reproduction when insect pollinators are not available. “Mass flowering” is an adaptive behavior and reproductive strategy of this species, and “few fruiting” could be caused by the lack of pollinators.

INFLUENCE OF GROWTH REGULATORS AND LED IRRADIATORS ON PINE STRAWBERRY ADAPTATION

1970 ◽  
pp. 12-15
Author(s):  
M. G. Markova ◽  
E. N. Somova
Keyword(s):  
Surface Area ◽  
Growth Regulators ◽  
Leaf Surface ◽  
Combined Treatment ◽  
Fragaria X Ananassa ◽  
Leaf Surface Area ◽  
External Conditions ◽  
Light Effects ◽  
Control Version

Work on going through the adaptation stage of rooted micro-stalks comes down to searching for new growth regulators and studying the influence of external conditions, which include, among other things, light effects. The data of 2018-2019 on the effect of growth regulators Siliplant, EcoFus and experimental LED phytoradiators on the adaptation of rooted micro-stalks of garden strawberries (Fragaria x ananassa duch) in vivo are presented. The object of research is rooted micro-stalks of garden strawberries of the Korona variety. It was revealed that, at the adaptation stage of rooted micro-stalks of strawberries, the most effective was the treatment of plants by spraying with Siliplant at a concentration of 1.0 ml/l and the combined treatment with Siliplant and EcoFus at concentrations of 0.5 ml/l: regardless of lighting, the survival rate averaged 99.4 - 99.7%, the leaf surface area increased significantly from 291.85 mm2 to 334.4 mm2. The number of normally developed leaves of strawberry microplants increased significantly after treatment with all preparations from 3.5 to 6.0, 5.8 and 6.5 pcs/plant, and a significant increase in the height of strawberry rosettes was facilitated by treatment with Siliplant and Siliplant together with EcoFus. Regardless of growth regulators, the most effective was the experimental LED phyto-irradiator with a changing spectrum, which contributed to an increase in leaf surface area, height of rosettes and the number of normally developed leaves in strawberry microplants. When illuminated with a flashing phytoradiator, these indicators are lower than in the control version, but not significantly. By the end of the rooting stage, all microplants of garden strawberries corresponded to GOST R 54051-2010.

scholarly journals Genome Sequence of the Asian Honeybee in Pakistan Sheds Light on Its Phylogenetic Relationship with Other Honeybees

Insects ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 652
Author(s):  
Hongwei Tan ◽  
Muhammad Naeem ◽  
Hussain Ali ◽  
Muhammad Shakeel ◽  
Haiou Kuang ◽  
...  
Keyword(s):  
Phylogenetic Relationship ◽  
Genome Sequence ◽  
Apis Cerana ◽  
Gc Content ◽  
Protein Domain ◽  
Pollination Services ◽  
Protein Coding ◽  
Close Relationship ◽  
Genome Scale ◽  
Asian Honeybee

In Pakistan, Apis cerana, the Asian honeybee, has been used for honey production and pollination services. However, its genomic makeup and phylogenetic relationship with those in other countries are still unknown. We collected A. cerana samples from the main cerana-keeping region in Pakistan and performed whole genome sequencing. A total of 28 Gb of Illumina shotgun reads were generated, which were used to assemble the genome. The obtained genome assembly had a total length of 214 Mb, with a GC content of 32.77%. The assembly had a scaffold N50 of 2.85 Mb and a BUSCO completeness score of 99%, suggesting a remarkably complete genome sequence for A. cerana in Pakistan. A MAKER pipeline was employed to annotate the genome sequence, and a total of 11,864 protein-coding genes were identified. Of them, 6750 genes were assigned at least one GO term, and 8813 genes were annotated with at least one protein domain. Genome-scale phylogeny analysis indicated an unexpectedly close relationship between A. cerana in Pakistan and those in China, suggesting a potential human introduction of the species between the two countries. Our results will facilitate the genetic improvement and conservation of A. cerana in Pakistan.

scholarly journals Antiviral Activities of a Medicinal Plant Extract Against Sacbrood Virus in Honeybees

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Liping Sun ◽  
Xueqi Zhang ◽  
Shufa Xu ◽  
Chunsheng Hou ◽  
Jin Xu ◽  
...  
Keyword(s):  
Honey Bees ◽  
Apis Cerana ◽  
Larval Growth ◽  
Antiviral Agent ◽  
Antiviral Effect ◽  
Absolute Quantification ◽  
Chinese Medicinal Herb ◽  
Sacbrood Virus ◽  
Antiviral Activities ◽  
Potential Strategy

Abstract Background Sacbrood is an infectious disease of the honey bee caused by Scbrood virus (SBV) which belongs to the family Iflaviridae and is especially lethal for Asian honeybee Apis cerana. Chinese Sacbrood virus (CSBV) is a geographic strain of SBV. Currently, there is a lack of an effective antiviral agent for controlling CSBV infection in honey bees. Methods Here, we explored the antiviral effect of a Chinese medicinal herb Radix isatidis on CSBV infection in A. cerana by inoculating the 3rd instar larvae with purified CSBV and treating the infected bee larvae with R. isatidis extract at the same time. The growth, development, and survival of larvae between the control and treatment groups were compared. The CSBV copy number at the 4th instar, 5th instar, and 6th instar larvae was measured by the absolute quantification PCR method. Results Bioassays revealed that R. isatidis extract significantly inhibited the replication of CSBV, mitigated the impacts of CSBV on larval growth and development, reduced the mortality of CSBV-infected A. cerana larvae, and modulated the expression of immune transcripts in infected bees. Conclusion Although the mechanism underlying the inhibition of CSBV replication by the medicine plant will require further investigation, this study demonstrated the antiviral activity of R. isatidis extract and provides a potential strategy for controlling SBV infection in honey bees.

New haplotypes of Apis cerana in Indonesia: identification from mitochondrial and major royal jelly protein 2 genes

2021 ◽  
Author(s):  
Rika Raffiudin ◽  
Nurul Insani Shullia ◽  
Adelia Ulfie Damayanti ◽  
Dian Tri Wahyudi ◽  
Tia Vina Febiriani ◽  
...  
Keyword(s):  
Royal Jelly ◽  
Apis Cerana ◽  
Royal Jelly Protein
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