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Secondary triploids were produced by crossing primary tetraploids with selected diploid partners and the parthenocarpic banana (Galeo). Comparisons between secondary tetraploids and secondary triploids showed that the secondary tetraploids generally had lower yields than secondary triploids. The ...


Ortiz, R.Vuylsteke, D.R.[Preliminary evaluation of secondary Musa polyploids at IITA breeding station]Preliminary evaluation of secondary Musa polyploids at IITA breeding station

Leaf age effects on the leaf conductance to water vapour diffusion of the adaxial and abaxial leaf surfaces were measured in the morning and in the afternoon on 17 different plantain and banana (Musa spp.) genotypes. The irradiance levels increased three-fold while leaf to air vapour pressure def...


Ekanayake, I.J.Ortiz, R.Vuylsteke, D.R.[Influence of leaf age, soil moisture, VPD and time of day on leaf conductance of various Musa genotypes in a Humid Forest Moist Savanna transition site]Influence of leaf age, soil moisture, VPD and time of day on leaf conductance of various Musa genotypes in a Humid Forest Moist Savanna transition site

De grandes differences existent entre les cultivars quant a la frequence et la nature des variations phenotypiques sur les plantes regenerees apres culture in vitro. Une grande part de ces variations mime la variabilite naturelle et les variants apparaissent essentiellement comme des copies d'aut...


Vuylsteke, D.R.Swennen, R.Langhe, E. de[Somaclonal variation in plantains (Musa spp, AAB group) derived from shoottip culture]Somaclonal variation in plantains (Musa spp, AAB group) derived from shoottip culture

Bunch orientation is an economically important trait in plantain ( Musa spp. AAB group) and banana ( Musa spp. AAA or ABB groups). Pendulous bunches are more symmetrical than subhorizontal, horizontal, or erect bunches and are, therefore, better adapted for transportation. Erect, horizontal, subh...


Ortiz, R.Vuylsteke, D.R.[Segregation of bunch orientation in plantain and banana hybrids]Segregation of bunch orientation in plantain and banana hybrids

Cultivated plantains and bananas (Musa spp.) are important staple crops in the humid forest and midaltitude ecologies of sub-Saharan Africa. Their water requirement is relatively high and they are very sensitive to dry soil conditions, which greatly limits their range of cultivation. While long-t...


Ekanayake, I.J.Ortiz, R.Vuylsteke, D.R.[Physiological factors in drought tolerance of various Musa genotype]Physiological factors in drought tolerance of various Musa genotype

Ploidy polymorphism occurs in the hybrid offspring derived from interspecific crosses between triploid plantains (Musa spp. AAB group) and diploid bananas (M. acuminata). Therefore, Musa breeders are interested in the determination of ploidy and its effects on phenotypic expression of quantitativ...


Vandenhout, H.Ortiz, R.Vuylsteke, D.R.Swennen, R.Bai, K.[Effect of ploidy on stomatal and other quantitative traits in plantain and banana hybrids]Effect of ploidy on stomatal and other quantitative traits in plantain and banana hybrids

Vuylsteke, D.R.Ortiz, R.Pasberg-Gauhl, C.Gauhl, F.Gold, C.Ferris, S.Speijer, P.[Plantain and banana research at the International Institute of Tropical Agriculture]Plantain and banana research at the International Institute of Tropical Agriculture

Four types of morphologically distinct somaclonal variants were identified in a population of False Horn plantain (Musa spp., AAB group) plants produced by in vitro shoot-tip culture. Field performance of these variants was compared with true-to-type plantain to evaluate their horticultural trait...


Vuylsteke, D.R.Swennen, R.Langhe, E. de[Field performance of somaclonal variants of plantain (Musa spp., AAB group)]Field performance of somaclonal variants of plantain (Musa spp., AAB group)

Plantain and banana (Musa spp.) are integral components of the farming systems in the humid forest and mid-altitude ecologies of sub-saharan Africa. They provide more than 25% of the carbohydrates for approximately 70 million people in the region. Major constraints to plantain and banana producti...


Vuylsteke, D.R.Ortiz, R.Ferris, S.[Genetic and agronomic improvement for sustainable production of plantain and banana in subSaharan Africa]Genetic and agronomic improvement for sustainable production of plantain and banana in subSaharan Africa

The susceptibility and sensitivity to Radopholus similis and Helicotylenchus multicintus of 2-month-old plants derived from sword suckers (early screening) and of sword suckers of established 18-month-old mats belonging to 12 Musa genotype was investigated and compared. Differences in nematode po...


Speijer, P.R.Boonen, E.Vuylsteke, D.R.Swennen, R.L.Waele, D. de[Nematode reproduction and damage to Musa sword suckers and sword sucker derived plants]Nematode reproduction and damage to Musa sword suckers and sword sucker derived plants

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