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Bananas and plantains (Musa spp. L.) are important staple food crops in tropical countries. A major constraint to their sustainable production is black sigatoka leaf spot disease, caused by the fungus Mycosphaerella fijiensis Morelet. Resistance breeding is the most appropriate intervention to co...


Ortiz, R.Vuylsteke, D.R.Ogburia, N.M.[Inheritance of pseudostem waxiness in banana and plantain (Musa spp.)]Inheritance of pseudostem waxiness in banana and plantain (Musa spp.)

Success of seed development following sexual crosses is primarily dependent on proper endosperm function and development. The failure to produce triploids, or “triploid block” in 4x×2x crosses served as the impetus for numerous studies of embryo and endosperm to attempt to explain cross failure. ...


Ehlenfeldt, M.K.Ortiz, R.[Evidence on the nature and origins of endosperm dosage requirements in Solanum and other angiosperm genera]Evidence on the nature and origins of endosperm dosage requirements in Solanum and other angiosperm genera

Plantain and banana (Musa spp. AAB and AAA groups) are perennial giant herbs of the tropics which develop parthenocarpic fruits. At least three independent but complementary dominant genes control vegetative parthenocarpy in Musa. One of these genes, P1 segregates in euploid hybrid progenies deri...


Ortiz, R.Vuylsteke, D.R.[Effect of the parthenocarpy gene P1 and ploidy in bunch and fruit traits of plantain and banana hybrids]Effect of the parthenocarpy gene P1 and ploidy in bunch and fruit traits of plantain and banana hybrids

Banana weevil (Cosmopolites sordidus Germar) is a major limiting factor in the cultivation of plantains and bananas (Musa spp. L.) in sub-Saharan Africa. The larvae damage the crop by tunneling in the corm. Chemical control is feasible but not sustainable, whereas host plant resistance is safe an...


Ortiz, R.Vuylsteke, D.R.Dumpe, B.Ferris, R.S.B.[Banana weevil resistance and corn hardness in Musa germplasm]Banana weevil resistance and corn hardness in Musa germplasm

Seed set in triploid Musa spp. L. is very low due to high levels of sterility. This makes cross breeding of plantain and banana difficult. Nonetheless, several triploid plantain and banana cultivars produce seeds after hand pollination with diploid parents. This paper reports results about the pa...


Ortiz, R.Vuylsteke, D.R.[Factors influencing seed set in triploid Musa spp. L.]Factors influencing seed set in triploid Musa spp. L.

Plantain (Musa spp., AAB group) is a major food crop in the humid lowland tropics of Africa, the Caribbean and Latin America. Lodging, caused by strong winds occurs periodically in these areas. Therefore, development of dwarf plantain cultivars and elucidation of the inheritance of dwarfism is de...


Ortiz, R.Vuylsteke, D.R.[Inheritance of dwarfism in AAB plantains]Inheritance of dwarfism in AAB plantains
Ortiz, R.Vuylsteke, D.R.Crouch, H.Crouch, J.[TM3x: triploid black sigatoka resistant Musa hybrid germplasm]TM3x: triploid black sigatoka resistant Musa hybrid germplasm
Ortiz, R.Vuylsteke, D.R.[BITA3: a starchy banana with partial resistance to black sigatoka and tolerance to streak virus]BITA3: a starchy banana with partial resistance to black sigatoka and tolerance to streak virus
Autor: Ortiz, R.

The aim of the work was to study the genetic origin of the persistence of male bracts and neutral flowers in diploid bananas bred by crossing diploids and tetraploids. The genetic system proposed for somaclonal variation and evolution in triploid bananas is described. [L'objectif du travail a con...


Ortiz, R.[Segregation for persistent neutral (Hermaphrodite) flowers and male bracts in plantain-banana hybrids]Segregation for persistent neutral (Hermaphrodite) flowers and male bracts in plantain-banana hybrids

A multilocational evaluation trial comprising 18 Musa genotypes was carried out from 1991 to 1994 in three representative locations in the humid forest (Onne, Nigeria and M'Balmayo, Cameroon) and the Forest-savanna Transstion (Ibadan, Nigeria) Zones of West and Central Africa. The main objective ...


Cauwer, I. deOrtiz, R.Vuylsteke, D.R.[Genotype by environment interaction in Musa germplasm revealed by multisite evaluation in subSaharan Africa]Genotype by environment interaction in Musa germplasm revealed by multisite evaluation in subSaharan Africa

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