Selection of Pleurotus ostreatus strains in a genetic breeding program
Fecha
2006Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Contribución a congreso / Biltzarrerako ekarpena
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
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nodoi-noplumx
|
Resumen
The basidiomycete Pleurotus ostreatus, commonly known as oyster mushroom,
is the second largest edible mushroom crop behind the white button
mushroom, Agaricus bisporus. It accounts for nearly one-quarter of the total
worldwide mushroom production. Furthermore, P. ostreatus has a high industrial
interest because it is a good source of enzymes and other products with
biotechnological, industr ...
[++]
The basidiomycete Pleurotus ostreatus, commonly known as oyster mushroom,
is the second largest edible mushroom crop behind the white button
mushroom, Agaricus bisporus. It accounts for nearly one-quarter of the total
worldwide mushroom production. Furthermore, P. ostreatus has a high industrial
interest because it is a good source of enzymes and other products with
biotechnological, industrial and medical applications, it is easy to cultivate
and because of its good organoleptic characteristics.
Since of 2003, our group research has carried out genetic breeding programs
based on the determination of QTLs controlling production and quality
in industrial cultures of this fungus. In this breeding program the first test
consisted in putting under fructification conditions 130 strains obtained
from the crossing of protoclon PC21 (P. ostreatus var. ostreatus wild strain) by
a collection of monokarions derived from N001 (P. ostreatus var. florida commercial
strain). For this purpose, 2 kg (3 repetitions per strain) bags of industrial
sustrate were inoculated and cultivated at 21ºC. Mature fruiting bodies
were collected and weighted daily during the fructification period.
The second test was made using the six strains that performed the better
in Test1, but were cultivated at 18ºC and with 15 repetitions per strain were
performed. From this test, three strains were selected and used in Test3. In
this test, other three strains obtained from the crossing between monokarions
descending of N001 and selectioned for their high growth rate were introduced.
In this test the weight of the bags was increased to 5 kg and the
cultures were cultivated at 18ºC.
The strains obtained from PC21 have good charactericts for mushroom
size, with similar behaviour for yield and precocity.
The strains obtained from the crosses between N001 descendants have
better mushroom size and similar yield and precocity than N001, then breeding
was obtained.
The candidate strains for next tests are PC21xMA046 and PC21xMA027
for their high yield and the mushroom good features. [--]
Materias
Pleurotus ostreatus
Editor
Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
Publicado en
Antonio G. Pisabarro and Lucía Ramírez (eds.): VI Meeting on Genetics and Cellular Biology of Basidiomycetes (GCBB-VI). Pamplona: Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2006.
Notas
Resumen del poster presentado al VI Meeting on Genetics and Cellular Biology of Basidiomycetes (GCBB-VI), organizado por y celebrado en la Universidad Pública de Navarra el 3-6 de junio de 2005.
Departamento
Universidad Pública de Navarra. Departamento de Producción Agraria /
Nafarroako Unibertsitate Publikoa. Nekazaritza Ekoizpena Saila