نتایج جستجو برای: hand pollination

تعداد نتایج: 264217  

Journal: Journal of Nuts 2011
A Imani N Ebrahimi S Kashanizadeh S Piri

In this study the artificial pollination of pistachio was investigated. Two types of pollen of local selective genotypes (Q1 and Q2) which were different pollinizers were used. The experiment had six treatments. Qazvini and Ohadi cultivars were pollinated with supplementary pollinations as treatment which was covered with cotton bag, natural pollination as a control which was not covered and tw...

Journal: :Biological reviews of the Cambridge Philosophical Society 2012
Adam S Hadley Matthew G Betts

Animal-mediated pollination is essential for both ecosystem services and conservation of global biodiversity, but a growing body of work reveals that it is negatively affected by anthropogenic disturbance. Landscape-scale disturbance results in two often inter-related processes: (1) habitat loss, (2) disruptions of habitat configuration (i.e. fragmentation). Understanding the relative effects o...

2016
Jason Gibbs Elizabeth Elle Kyle Bobiwash Tiia Haapalainen Rufus Isaacs

Highbush blueberry yields are dependent on pollination by bees, and introduction of managed honey bees is the primary strategy used for pollination of this crop. Complementary pollination services are also provided by wild bees, yet highbush blueberry is increasingly grown in regions outside its native range where wild bee communities may be less adapted to the crop and growers may still be tes...

ژورنال: :علوم باغبانی ایران 2013
طاهر سقلی علیرضا طلایی علی ایمانی

the present research was conducted with the purpose of studying self and cross-compatibility in some commercial cultivars of peach through field and microscopic studies in order to increase the quantity and quality traits of the product. the study was carried out in years 2010 and 2011. in a first experiment, the pollen germination of 10 cultivars of peach was studied in culture medium. the res...

Journal: :South African Journal of Botany 2021

• Honey bees significantly increase yield in blueberry variety Ventura. Blueberry yields still show a pollen deficit. can be effective pollinators of blueberries areas which lack bumble bees. Animal-mediated pollination is an essential ecosystem service on over third the world's agricultural crops depend. fruit production highly dependent animal and although visited by range bee species their n...

Journal: :Agronomy 2021

Citrus reproductive biology is complex. One of its characteristic features parthenocarpy that enables seedless fruit production. and self-incompatibility knowledge only partial sometimes discrepant. Increasing such relevant for better managing cultivated varieties improving the selection parents in breeding strategies to recover as mandarins. This work develops an efficient protocol characteriz...

2017
Allysa C. Hallett Randall J. Mitchell Evan R. Chamberlain Jeffrey D. Karron

Pollinator abundance is declining worldwide and may lower the quantity and quality of pollination services to flowering plant populations. Loss of an important pollinator is often assumed to reduce the amount of pollen received by stigmas of a focal species (pollination success), yet this assumption has rarely been tested experimentally. The magnitude of the effect, if any, may depend on the re...

Journal: :Proceedings. Biological sciences 2012
Nicolas J Vereecken Carol A Wilson Susann Hötling Stefan Schulz Sergey A Banketov Patrick Mardulyn

Pollination by sexual deception is arguably one of the most unusual liaisons linking plants and insects, and perhaps the most illustrative example of extreme floral specialization in angiosperms. While considerable progress has been made in understanding the floral traits involved in sexual deception, less is known about how this remarkable mimicry system might have arisen, the role of pre-adap...

Journal: :Plant physiology 1998
A Q Bui S D O'Neill

The temporal and spatial expression patterns of three 1-aminocyclopropane-1-carboxylate (ACC) synthase genes were investigated in pollinated orchid (Phalaenopsis spp.) flowers. Pollination signals initiate a cascade of development events in multiple floral organs, including the induction of ethylene biosynthesis, which coordinates several postpollination developmental responses. The initiation ...

Journal: :Anais da Academia Brasileira de Ciencias 2014
Morgana S Sazan Antonio Diego M Bezerra Breno M Freitas

Oil-collecting bees are the natural pollinators of oil-flower plants, but little is known about the pollination process and the effectiveness of their pollination service to the reproductive success of their host plants. In species of Byrsonima the reproductive system have been described as auto-compatible or self-incompatible. We studied the reproductive system of Byrsonima cydoniifolia, the f...

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