PubAg

Main content area

You searched for: Subject "pollination" Remove constraint Subject: "pollination"
Start Over

Search

8,970  Search Results

« Previous | 1 - 20 of 8,970 |
Number of results to display per page

Search Results

1. How to build a digital river

Author:
Brown, Rocko A.; Pasternack, Gregory B.
Source:
Earth-science reviews 2019 v.194 pp. 283-305
ISSN:
0012-8252
Subject:
cross pollination,   etc   ; computers; geometry; landscapes; models; morphogenesis; rivers; topography;     Show all 8 Subjects
Abstract:
... There has been an increasing practice of creating Earth-like, realistic synthetic landscapes by Earth scientists and computer scientists for a variety of applications. While together these two fields have made significant scientific and social contributions to creating synthetic landscapes, it is presently infeasible to build artificial digital rivers that represent the diversity found on Earth. T ...
DOI:
10.1016/j.earscirev.2019.04.028

2. Sebaea solaris (Gentianaceae), a new species from the Western cape of South Africa

Author:
Kissling, J.; Zeltner, L.
Source:
South African journal of botany 2019 v.123 pp. 20-22
ISSN:
0254-6299
Subject:
pollination,   etc   ; Gentianaceae; calyx; corolla; new species; South Africa;     Show all 6 Subjects
Abstract:
... Sebaea solaris (Gentianaceae) is here described as a new species from the Overberg region, Western Cape, South Africa. This new species is at first glance very distinct from all others in the genus mainly due to its relative large yellow flowers of c. 2.5 cm diameter with oblanceolate to obdeltoid erose corolla lobes. The petal ornamentation with several orange lines indicating the flower centre ( ...
DOI:
10.1016/j.sajb.2019.02.002

3. First record of Aspicera hartigi (Hymenoptera, Figitidae) from India, with observations on its foraging behavior on Ephedra plants

Author:
Rather, Zubair Ahmad; Wachkoo, Aijaz Ahmad; Khuroo, Anzar Ahmad; Dar, Abdul Rashid; Dar, Tanvir ul Hassan
Source:
Journal of Asia-Pacific biodiversity(Online) 2019
ISSN:
2287-884X
Subject:
pollination,   etc   ; Ephedra; Figitidae; biodiversity; fauna; females; foraging; Himalayan region; India;     Show all 9 Subjects
Abstract:
... Aspicera hartigi Dalla Torre, 1889 is reported for the first time from India. A brief diagnosis and photographic illustrations of the species are provided to validate this new faunal record for India from the Kashmir valley in Western Himalaya. In addition, the present study for the first time reports the feeding of Aspicera hartigi on the pollination drop of the female cones in Ephedra plants, wh ...
DOI:
10.1016/j.japb.2019.03.007

4. Beyond taxonomy: anther skirt is a diagnostic character that provides specialized noctuid pollination in Marsdenia megalantha (Asclepiadoideae–Apocynaceae)

Author:
Domingos-Melo, Arthur; Nadia, Tarcila L.; Wiemer, Ana P.; Cocucci, Andrea A.; Machado, Isabel C.
Source:
Plant systematics and evolution 2019 v.305 no.2 pp. 103-114
ISSN:
0378-2697
Subject:
pollination,   etc   ; Marsdenia; evolution; legs; nectar; nectaries; phenotype; taxonomy;     Show all 8 Subjects
Abstract:
... Taxonomic diagnostic floral structures can be very informative about details of the floral mechanism, promoting baselines for inferences about pollination system. In a number of species in the milkweed tribe Marsdenieae, the already complex basic asclepiad flower structure is further elaborated by the evolution of one morphological novelty: the anther skirt. Since the functional significance of th ...
DOI:
10.1007/s00606-018-1555-7

5. Ecological Intensification: Bridging the Gap between Science and Practice

Author:
Kleijn, David; Bommarco, Riccardo; Fijen, Thijs P.M.; Garibaldi, Lucas A.; Potts, Simon G.; van der Putten, Wim H.
Source:
Trends in ecology & evolution 2019 v.34 no.2 pp. 154-166
ISSN:
0169-5347
Subject:
pollination,   etc   ; ecosystem services; farmers; food production; profits and margins; scientists;     Show all 6 Subjects
Abstract:
... There is worldwide concern about the environmental costs of conventional intensification of agriculture. Growing evidence suggests that ecological intensification of mainstream farming can safeguard food production, with accompanying environmental benefits; however, the approach is rarely adopted by farmers. Our review of the evidence for replacing external inputs with ecosystem services shows tha ...
DOI:
10.1016/j.tree.2018.11.002

6. Floral uniformity through evolutionary time in a species‐rich tree lineage

Author:
Vasconcelos, Thais N. C.; Chartier, Marion; Prenner, Gerhard; Martins, Aline C.; Schönenberger, Jürg; Wingler, Astrid; Lucas, Eve
Source:
Thenew phytologist 2019 v.221 no.3 pp. 1597-1608
ISSN:
0028-646X
Subject:
pollination,   etc   ; Myrcia; ecological competition; ecosystems; environmental factors; flowers; phylogeny; trees;     Show all 8 Subjects
Abstract:
... Changes in floral morphology are expected across evolutionary time and are often promoted as important drivers in angiosperm diversification. Such a statement, however, is in contrast to empirical observations of species‐rich lineages that show apparent conservative floral morphologies even under strong selective pressure to change from their environments. Here, we provide quantitative evidence fo ...
DOI:
10.1111/nph.15453

7. Are killer bees good for coffee? The contribution of a paper's title and other factors to its future citations

Author:
Costello, Mark J.; Beard, Karen H.; Primack, Richard B.; Devictor, Vincent; Bates, Amanda E.
Source:
Biological conservation 2019 v.229 pp. A1
ISSN:
0006-3207
Subject:
insect pollination,   etc   ; Africanized honey bees; Coffea arabica; information sources; journals;     Show all 5 Subjects
Abstract:
... How can the title of a paper affect its subsequent number of citations? We compared the citation rate of 5941 papers published in the journal Biological Conservation from 1968 to 2012 in relation to: paper length; title length; number of authors; paper age; presence of punctuation (colons, commas or question marks); geographic and taxonomic breadth; the word ‘method’; and the type of manuscript (a ...
DOI:
10.1016/j.biocon.2018.07.010

8. Beyond buzz‐pollination – departures from an adaptive plateau lead to new pollination syndromes

Author:
Dellinger, Agnes S.; Chartier, Marion; Fernández‐Fernández, Diana; Penneys, Darin S.; Alvear, Marcela; Almeda, Frank; Michelangeli, Fabián A.; Staedler, Yannick; Armbruster, W. Scott; Schönenberger, Jürg
Source:
Thenew phytologist 2019 v.221 no.2 pp. 1136-1149
ISSN:
0028-646X
Subject:
pollination,   etc   ; Chiroptera; Melastomataceae; evolution; hummingbirds; pollen; pollinators; rodents; stamens;     Show all 9 Subjects
Abstract:
... Pollination syndromes describe recurring adaptation to selection imposed by distinct pollinators. We tested for pollination syndromes in Merianieae (Melastomataceae), which contain bee‐ (buzz‐), hummingbird‐, flowerpiercer‐, passerine‐, bat‐ and rodent‐pollinated species. Further, we explored trait changes correlated with the repeated shifts away from buzz‐pollination, which represents an ‘adaptiv ...
DOI:
10.1111/nph.15468

9. Consistent pollination services to Cypripedium macranthos var. rebunense (Orchidaceae) by Bombus pseudobaicalensis

Author:
Sugiura, Naoto
Source:
Plant species biology 2019 v.34 no.1 pp. 38-42
ISSN:
0913-557X
Subject:
pollination,   etc   ; Bombus hypocrita; Cypripedium; body size; pollen; pollinators; risk;     Show all 7 Subjects
Abstract:
... Bombus pseudobaicalensis queens are known pollinators of the threatened orchid Cypripedium macranthos var. rebunense. However, whether other bumblebee species also pollinate this orchid has not yet been ascertained. A 10‐year observation provided convincing evidence that B. pseudobaicalensis is the only consistent pollinator. B. beaticola moshkarareppus queens were newly found to rarely carry poll ...
DOI:
10.1111/1442-1984.12232

10. Heritabilities of lateral and vertical herkogamy in Lysimachia arvensis

Author:
Jiménez‐López, Francisco Javier; Arista, Montserrat; Talavera, María; Pannell, John R.; Ortiz, Pedro L.
Source:
Plant species biology 2019 v.34 no.1 pp. 31-37
ISSN:
0913-557X
Subject:
pollination,   etc   ; Lysimachia; anthers; flowers; heritability; herkogamy; phenotypic variation; stamens; stigma;     Show all 9 Subjects
Abstract:
... Herkogamy, spatial separation between stigma and anthers within a flower, is important in regulating plant‐mating systems. We studied phenotypic variation and heritability of herkogamy traits in Lysimachia arvensis (=Anagallis arvensis) that show both lateral and vertical herkogamy in the same flower, a rare strategy in flowering plants. Both lateral and vertical herkogamy showed continuous variat ...
DOI:
10.1111/1442-1984.12229

11. DNA paternity testing indicates unexpectedly high levels of self-fertilisation in macadamia

Author:
Langdon, Kirsty S.; King, Graham J.; Nock, Catherine J.
Source:
Tree genetics & genomes 2019 v.15 no.2 pp. 29
ISSN:
1614-2942
Subject:
cross pollination; open pollination,   etc   ; DNA; Macadamia; cultivars; genetic markers; landscapes; orchards; paternity; pollen flow; progeny; seedlings; seeds; selfing; Australia;     Show all 15 Subjects
Abstract:
... The recently domesticated nut crop macadamia is partially self-incompatible. Variation in the capacity for self-fertilisation is likely to have significant consequences, both for commercial nut production and the conservation of native populations. Molecular paternity testing using 11 microsatellite markers was conducted on open-pollinated seedling progeny of cultivar ‘741’, and mature kernel from ...
DOI:
10.1007/s11295-019-1336-7

12. Do breeding system and pollen limitation vary with altitude in the widespread herb, Cineraria erodioides (Asteraceae)?

Author:
Black, H.N.; Harrison, J.d.G.; Cron, G.V.
Source:
South African journal of botany 2019 v.121 pp. 377-385
ISSN:
0254-6299
Subject:
cross pollination; self-pollination,   etc   ; Cineraria; Coleoptera; Diptera; alpine plants; altitude; breeding; fruits; insects; pollen; pollinators; powders; reproductive success; seed set; wind; South Africa;     Show all 17 Subjects
Abstract:
... Alpine plant species may experience pollen limitation due to low availability of pollinators at higher altitudes, and therefore may be under selection for autonomous self-pollination to ensure reproductive success. Little is known about the reproduction of plant species at high altitudes in southern Africa and whether absence of pollinators influences their breeding system. Two pollination treatme ...
DOI:
10.1016/j.sajb.2018.11.027

13. Cross- vs. self-pollination in ‘Hass’ avocados growing in coastal and inland orchards of Southern California

Author:
Davenport, Thomas Lee
Source:
Scientia horticulturae 2019 v.246 pp. 307-316
ISSN:
0304-4238
Subject:
open pollination; self-pollination,   etc   ; abscission; avocados; bees; branches; cages; canopy; cultivars; flowering; forage; growers; orchards; ovules; pollen; pollen tubes; temperature; trees; wind; California;     Show all 20 Subjects
Abstract:
... The dynamics of pollen transfer from complimentary pollinizing avocado cultivars and pollen deposition onto and within flowers of ‘Hass’ avocado trees growing in southern California was examined. Experiments were conducted during the flowering seasons of 2001, 2003, 2005, and 2006. Three commercial ‘Hass’ (an A-type avocado) orchards interplanted with complimentary, B-type cultivars were chosen in ...
DOI:
10.1016/j.scienta.2018.10.051

14. Comparative pollen–pistil interactions and insect pollination in two Hypoxis species (Hypoxidaceae) in China and North America

Author:
Ren, Zong-Xin; Bernhardt, Peter; Edens-Meier, Retha; Zweck, Justin; Arduser, Mike; Li, Hai-Dong; Wang, Hong
Source:
Plant systematics and evolution 2019 v.305 no.2 pp. 115-126
ISSN:
0378-2697
Subject:
insect pollination; self-pollination,   etc   ; Hypoxis; Syrphidae; bees; ecology; females; flowers; grains; herbs; ovules; pistil; pollen; pollen loads; pollen tubes; pollinators; seed set; China; North America;     Show all 19 Subjects
Abstract:
... We compared the floral ecology and pollen–pistil interactions in Hypoxis hirsuta (L.) Coville from North America and Hypoxis aurea Loureiro from China. Both species are vernal-flowering herbs, with yellow perianths, providing pollen as their only reward. In H. hirsuta, hand self-pollinated, emasculated and bagged control flowers failed to set fruit. When cross-pollinated, 77% of the pistils produc ...
DOI:
10.1007/s00606-018-1556-6

15. Positive effects of the pollinators Osmia cornuta (Megachilidae) and Lucilia sericata (Calliphoridae) on strawberry quality

Author:
Herrmann, John David; Beye, Henriette; de la Broise, Christel; Hartlep, Hollyn; Diekötter, Tim
Source:
Arthropod-plant interactions 2019 v.13 no.1 pp. 71-77
ISSN:
1872-8855
Subject:
insect pollination; self-pollination,   etc   ; Fragaria ananassa; Lucilia sericata; Osmia cornuta; bees; cages; color; crops; deformation; flowering; fruit quality; fruits; functional diversity; gardens; life history; orchards; pollinators; strawberries;     Show all 19 Subjects
Abstract:
... In the last decades, the fraction of crops requiring biotic pollination has increased dramatically. While wind- and self-pollination is possible for some of these crops, insect pollination generally increases yields and quality of produce. Especially pollinator communities with varying traits often show additive, positive effects on crop pollination. The aim of this study was to investigate the ef ...
DOI:
10.1007/s11829-018-9636-7

16. Increased percentage of fruit set of F1 hybrid of Capsicum chinense during high-temperature period

Author:
Yamazaki, Akira; Hosokawa, Munetaka
Source:
Scientia horticulturae 2019 v.243 pp. 421-427
ISSN:
0304-4238
Subject:
cross pollination; self-pollination,   etc   ; Capsicum chinense; Solanum lycopersicum; Solanum melongena; autumn; eggplants; females; fruit set; greenhouses; males; pollen; pollen germination; reciprocal crosses; temperature; tomatoes; vegetable growing; winter;     Show all 18 Subjects
Abstract:
... Low percentage of fruit set in fruit vegetables cultivated in greenhouses, such as tomato (Solanum lycopersicum), eggplant (S. melongena), and capsicum (Capsicum), in high-temperature seasons has been reported as one of the biggest problems in commercial vegetable production. In this study, C. chinense ‘Sy-2’ and ‘No. 3686’ were cultivated in greenhouses for a year. Remarkably low percentages of f ...
DOI:
10.1016/j.scienta.2018.08.049

17. Autonomous self-fertilization in Linum sulcatum, a native annual with a previously unknown mating system

Author:
Jahnke, Matthew R.; Etterson, Julie R.
Source:
Journal of plant research 2019 v.132 no.1 pp. 57-67
ISSN:
0918-9440
Subject:
cross pollination; self-pollination,   etc   ; Linum sulcatum; annuals; evolution; habitats; indigenous species; mating systems; outcrossing; pollen tubes; rearing; seeds; selfing; wild plants;     Show all 14 Subjects
Abstract:
... The mating systems of wild plant populations have profound effects on their genetic structure and evolution, yet remain unknown or incompletely described for many species. One such species, the herbaceous native annual Linum sulcatum Riddell (Linaceae), is thought to be self-compatible, but there has been no experimental evidence to date to support this claim. To assess the breeding system of this ...
DOI:
10.1007/s10265-018-1076-z

18. Early consequences of allopolyploidy alter floral evolution in Nicotiana (Solanaceae)

Author:
McCarthy, Elizabeth W.; Landis, Jacob B.; Kurti, Amelda; Lawhorn, Amber J.; Chase, Mark W.; Knapp, Sandra; Le Comber, Steven C.; Leitch, Andrew R.; Litt, Amy
Source:
BMC plant biology 2019 v.19 no.1 pp. 162
ISSN:
1471-2229
Subject:
pollination,   etc   ; Nicotiana; allopolyploidy; color; convergent evolution; corolla; diploidy; genome; genomics; phenotype; pollinators; prediction;     Show all 12 Subjects
Abstract:
... BACKGROUND: Polyploidy has played a major role in angiosperm evolution. Previous studies have examined polyploid phenotypes in comparison to their extant progenitors, but not in context of predicted progenitor phenotypes at allopolyploid origin. In addition, differences in the trends of polyploid versus diploid evolution have not been investigated. We use ancestral character-state reconstructions ...
DOI:
10.1186/s12870-019-1771-5

19. Landscape heterogeneity increases the spatial stability of pollination services to almond trees through the stability of pollinator visits

Author:
Lázaro, Amparo; Alomar, David
Source:
Agriculture, ecosystems & environment 2019 v.279 pp. 149-155
ISSN:
0167-8809
Subject:
pollination,   etc   ; almonds; crop production; crops; fruit set; fruits; habitats; land cover; land use; landscapes; pollinators;     Show all 11 Subjects
Abstract:
... High pollinator reliability is essential to maintain a stable and predictable crop production. However, still few studies have considered landscape effects on the stability (low variability) of the pollination service to crops. The stability of pollination services may increase in heterogeneous landscapes with high availability and diversity of alternative habitats. By using data on pollinator vis ...
DOI:
10.1016/j.agee.2019.02.009

20. Clumped planting arrangements improve seed production in a revegetated eucalypt woodland

Author:
McCallum, Kimberly P.; Breed, Martin F.; Paton, David C.; Lowe, Andrew J.
Source:
Restoration ecology 2019 v.27 no.3 pp. 638-646
ISSN:
1061-2971
Subject:
pollination,   etc   ; Eucalyptus leucoxylon; fruits; land restoration; planting; pollen; pollinators; seed set; trees; woodlands;     Show all 10 Subjects
Abstract:
... The arrangement of plants within revegetated sites is rarely considered an important characteristic of these communities. However, in natural systems, plant spatial arrangements can influence a range of ecological processes, including pollination and seed set. Pollinators tend to preferentially visit larger and/or more closely spaced populations, with plants in these populations generally receivin ...
DOI:
10.1111/rec.12905