نتایج جستجو برای: cross pollination
تعداد نتایج: 496217 فیلتر نتایج به سال:
Considerable infonnation has been developed on floral induction and the flowering process in Citrus in the papers which precede this one. Flower induction is a prerequisite to fruit production, so it is very important to have a clear understanding ofthe process. However, simply producing large numbers offlowers does not necessarily guarantee a subsequent large crop of fruit to harvest when they...
Pollen limitation of female fecundity is widespread among angiosperms, a signal that pollinators frequently fail to transfer pollen to fertilize all ovules. Recent surveys have suggested that pollen limitation is associated with floral specialization. This study uses a group of Antillean Gesneriaceae with contrasting pollination systems (bat, hummingbird, and generalist) to assess the premise t...
Determination of Self-Compatibility of the 'Arsel' Olive Cultivar Obtained by Hybridization Breeding
This study was aimed to determine the fertilization biology of 'Arsel' olive cultivar obtained by hybridization breeding. For this reason, treatments open pollination, cross and self-pollination were performed for 2 years self-compatibility appropriate pollinators new investigated. Among varieties included as (‘Memecik’, ‘Gemlik’, ‘Uslu’, ‘Ayvalık’ ‘Eğriburun Nizip’), highest fruit set achieved...
A decline in pollination function has been linked to agriculture expansion and intensification. In northwest Argentina, pollinator visits to grapefruit, a self-compatible but pollinator-dependent crop, decline by approximately 50% at 1km from forest edges. We evaluated whether this decrease in visitation also reduces the pollination service in this crop. We analysed the quantity and quality of ...
The breeding systems of two sympatric species, Polyalthia coffeoides and Polyalthia korinti (Annonaceae), are assessed using a range of approaches, including controlled pollination experiments and analysis of intersimple sequence repeat markers within and between populations. Natural (open) pollination resulted in similar levels of fruit formation as artificial cross-pollination, suggesting tha...
Many flowering plants exhibit an important intraspecific reproductive barrier phenomenon, that is, self-incompatibility (SI), in which S-RNase genes play a significant role. To clarify the specific function of S-RNase genes in Chinese pears, the full length cDNA of PbS 26 -RNase was isolated by rapid amplification of cDNA ends (RACE) technology from Chinese white pear (Pyrus bretschneideri) cul...
Proteomic analysis of the stigmatic exudate of Lilium longiflorum and Olea europaea led to the identification of 51 and 57 proteins, respectively, most of which are described for the first time in this secreted fluid. These results indicate that the stigmatic exudate is an extracellular environment metabolically active, participating in at least 80 different biological processes and 97 molecula...
for sexual reproduction of allium hirtifolium, collected bulbs were planted in the field. in order to develop ovary embryo and seed setting, control self-pollination and natural open pollination took placed using honey bees under cages. ovary development and seed setting of a. hirtifolium extraordinary were affected by pollination and there was a significant difference between mean effect of se...
Flower orientation in Gloriosa superba (Colchicaceae) promotes cross-pollination via butterfly wings
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