Results 21 to 30 of about 2,725 (226)
Reproductive Biology of Astragalus argaeus (Fabaceae), a critically endangered endemic species
Astragalus argaeus is an endemic plant species that is under critical risk of extinction. Here we investigated its population census, breeding system and reproductive success to determine the main factors affecting restricted distribution of this species.
BAYRAM ATASAGUN +3 more
doaj +1 more source
Effects of temperature on the pollination biology of Luntai Xiaobai apricot [PDF]
[Objective] The study aimed to investigate the influence of temperature on the pollination biology of Luntai Xiaobai apricot (Prunus armeniaca L.) in order to provide a theoretical foundation for determining the optimal timing for artificially assisted ...
XIE Lixing +6 more
doaj +1 more source
Natural and artificial pollination of white-fleshed pitaya
To produce pitaya (Hylocereus spp.), it is essential that pollination occur, either artificially or by pollinating agents. This study evaluated the viability of self-pollination, cross-pollination, and natural pollination, as well as pollen viability ...
RENATA A. MOREIRA +7 more
doaj +1 more source
Is the pollination efficiency of long-lived orchid flowers affected by age?
The long-lived flowers of orchids increase the chances of pollination and thus the reproductive success of the species. However, a question arises: does the efficiency of pollination, expressed by fruit set, vary with the flower age?
Rúbia Santos Fonseca +2 more
doaj +1 more source
O objetivo deste trabalho foi analisar a receptividade de estigmas de Acacia mearnsii De Wild. em 20 árvores da Área de Produção de Sementes (APS) da Fazenda Locatelli, da empresa SETA S.A., no município de Butiá (RS) e comparar os períodos de ...
Eudes Maria Stiehl-Alves +1 more
doaj +1 more source
Thirty six morphological characters consisting of sixteen biometrical and twenty qualitative characters were studied in six genotypes of sunnhemp (Crotalaria juncea L.), a fibre cum green manure crop of the tropics.
Ananthu Rajagopal¹, N. Meenakshi ganesan¹̽, P. Anantharaju² and R.Gnanam³
doaj +1 more source
Rubus glaucus Benth.: morphology and floral biology aimed at plant breeding processes
Rubus glaucus is widely distributed throughout the three mountain ranges of Colombia, where the blackberry growers have highlighted the need to standardize the supply of planting material, starting with plant breeding schemes that lead to more productive
Ana María López Gutiérrez +3 more
doaj +1 more source
Nocturnal and diurnal pollination in Copaifera coriacea, a dominant species in sand dunes of the Middle São Francisco River Basin, Northeastern Brazil [PDF]
Background and aims – Copaifera coriacea, a species in the resin-producing clade Detarioideae (Leguminosae), is an endemic and abundant species found in sand dunes in Brazilian Caatinga domain vegetation – a Quaternary paleodesert. We investigated floral
Isys Mascarenhas Souza +3 more
doaj +3 more sources
Receptivity of Exserted Stigmas
This article 'Receptivity of Exserted Stigmas' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping ...
Xu, Y. B., Shen, Z. T.
openaire +1 more source
Pollen viability and stigma receptivity are prerequisites for successful cross-pollination and seed set in Swainsona formosa. In this study, the pollen viabilities and stigma receptivities was assayed by in vitro pollen germination and simple hand ...
Zulkarnain Zulkarnain +2 more
doaj +1 more source

