Descubre y comparte nuestro conocimiento público

Se han encontrado 18 recursos

Resultados de búsqueda

Chaves-Barrantes, Néstor FelipeAraya Villalobos, RodolfoDebouck, Daniel G.[Cruzamiento natural en frijol común en Costa Rica]Cruzamiento natural en frijol común en Costa Rica
Perera, Prasanthi I.P.Quintero, M.Dedicova, BeataKularatne, J.D.J.S.Ceballos, H.[Comparative morphology, biology and histology of reproductive development in three lines of Manihot esculenta Crantz (Euphorbiaceae: Crotonoideae)]Comparative morphology, biology and histology of reproductive development in three lines of Manihot esculenta Crantz (Euphorbiaceae: Crotonoideae)

Interspecific crosses of five cultivated cassava varieties (2n=36) were made with two related Manihot species, M. epruinosa (2n=36) and M. glaziovii (2n=36). From these diploid interspecific crosses, four spontaneous tetraploids (2n=4x=72) and two triploids (2n=3x=54) were isolated for the first ...


Hahn, S.K.Bai, K.V.Asiedu, Robert[Tetraploids, triploids and 2n pollen from diploid interspecific crosses with cassava]Tetraploids, triploids and 2n pollen from diploid interspecific crosses with cassava

Owing to the reduction of population density and/or the environmental changes it induces, selective logging could affect the demography, reproductive biology and evolutionary potential of forest trees. This is particularly relevant in tropical forests where natural population densities can be low...


Duminil, J.Dainou, K.Kaviriri, D.K.Gillet, P.Loo, J.Doucet, J.L.Hardy, O.J.[Relationships between population density, fine-scale genetic structure, mating system and pollen dispersal in a timber tree from African rainforest]Relationships between population density, fine-scale genetic structure, mating system and pollen dispersal in a timber tree from African rainforest
Monthe, F.K.Hardy, O.J.Doucet, J.L.Loo, J.Duminil, J.[Extensive seed and pollen dispersal and assortative mating in the rain forest tree Entandrophragma cylindricum (Meliaceae) inferred from indirect and direct analyses]Extensive seed and pollen dispersal and assortative mating in the rain forest tree Entandrophragma cylindricum (Meliaceae) inferred from indirect and direct analyses

Hermetic cold storage without previous drying (wet–cold storage) was experimented for the preservation of yam pollen grains. Pollens collected from white yam D. rotundata and a wild relative, D. praehensilis, were stored at -80, -20, 5, and 150C in sealed packs for 2 years. Pollen samples were dr...


Daniel, I.O.Ng, N.Q.Tayo, T.O.Togun, A.O.[Wet-cold preservation of West African yam (Dioscorea spp.) pollen]Wet-cold preservation of West African yam (Dioscorea spp.) pollen

Increased temperature due to global warming may reduce pollen germination and induce spikelet sterility in rice crops. Anthesis is the most sensitive stage in rice and exposure to high temperature during this period may cause reduction in floral reproduction. Increased temperature will have diffe...


Chakrabarti, B.Aggarwal, Pramod K.Singh, S.D.Nagarajan SPathak, Himanshu[Impact of high temperature on pollen germination and spikelet sterility in rice: comparison between basmati and non-basmati varieties]Impact of high temperature on pollen germination and spikelet sterility in rice: comparison between basmati and non-basmati varieties
Perera, Prasanthi I.P.Dedicova, BeataOrdoñez, C.Kularatne, J.D.J.S.Quintero, MarcelaCeballos, H.[Recent advances in androgenesis induction of cassava (Manihot esculenta Crantz)]Recent advances in androgenesis induction of cassava (Manihot esculenta Crantz)

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso