أعرض تسجيلة المادة بشكل مبسط

dc.creator Vacaro Elton
dc.creator Barbosa Neto José Fernandes
dc.creator Pegoraro Diego Girardi
dc.creator Nuss Claudio Natalino
dc.creator Conceição Leo Duc Haa
dc.date 2002
dc.date.accessioned 2013-05-30T04:11:58Z
dc.date.available 2013-05-30T04:11:58Z
dc.date.issued 2013-05-30
dc.identifier http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000100009
dc.identifier http://www.doaj.org/doaj?func=openurl&genre=article&issn=0100204X&date=2002&volume=37&issue=1&spage=67
dc.identifier.uri http://koha.mediu.edu.my:8181/jspui/handle/123456789/3727
dc.description Genetic progress depends on germplasm quality and breeding methods. Twelve maize populations and their crosses were evaluated to estimate combining ability and potential to be included as source populations in breeding programs. Plant height, point of insertion of the first ear, number of ears per plant, number of grains per ear, root and stalk lodging and grain yield were studied in two locations in Brazil, during the 1997/98 season. Genotype sum of squares was divided into general (GCA) and specific (SCA) combining ability. Results indicated the existence of genetic divergence for all traits analyzed, where additive effects were predominant. The high heterosis levels observed, mainly in Xanxerê, suggested the environmental influence on the manifestation of this genetic phenomenon. Populations revealed potential to be used in breeding programs; however, those more intensively submitted to selection could provide larger genetic progress, showing the importance of population improvement for the increment of the heterosis in maize.
dc.publisher Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
dc.source Pesquisa Agropecuária Brasileira
dc.subject Zea mays
dc.subject germplasm
dc.subject heterosis
dc.subject genetic variation
dc.title Combining ability of twelve maize populations


الملفات في هذه المادة

الملفات الحجم الصيغة عرض

لا توجد أي ملفات مرتبطة بهذه المادة.

هذه المادة تبدو في المجموعات التالية:

أعرض تسجيلة المادة بشكل مبسط