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Evolution of inbred line development methodologies in maize

By: Chaudhary, D.N | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico, DF (Mexico) | 7, Proceedings of the Asian Regional Maize Workshop Los Baños (Philippines) 23-27 Feb 1998.
Contributor(s): Vasal, S.K.|Gonzalez Ceniceros, F.|XiongMing, F [eds.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Los Baños, Laguna (Philippines) PCARRD : 2000Description: p. 121-123.Subject(s): Biotechnology | Germplasm | Inbred lines | Maize | Seeds | Yields AGROVOC | Hybrids AGROVOC | Plant breeding AGROVOCSummary: Plant breeding is a function of gerrnplasm, technique and resources. Very often, resource component becomes major constraint in several breeding programs. As for the gerrnplasm, it is estimated that only a small fraction of total corn gerrnplasm available has been exploited. Since the inception of hybrid technology, efforts have been put continuously to develop and improve inbreds for identification of productive hybrids. Different types of gerrnplasm have been used in inbred development efforts with varying degree of success. Starting with bulk, and pedigree methods of breeding, several other mehtodologies have evolved over the time to achieve this goal. Some of the procedures like having evaluation nursery , subjecting inbreeding populations to high density, discouraging use of knife to clip silk/husk have greatly improved efficiency of selection. Simultaneously, some of the new tools like doubling of monoploids, tissue culture and biotechnology are beginning to show promise. Recently with increasing emphasis on use of SX hybrids in tropics, seed yield of inbreds and its producibility have drawn greater attention of breeders.Collection: CIMMYT Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

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Plant breeding is a function of gerrnplasm, technique and resources. Very often, resource component becomes major constraint in several breeding programs. As for the gerrnplasm, it is estimated that only a small fraction of total corn gerrnplasm available has been exploited. Since the inception of hybrid technology, efforts have been put continuously to develop and improve inbreds for identification of productive hybrids. Different types of gerrnplasm have been used in inbred development efforts with varying degree of success. Starting with bulk, and pedigree methods of breeding, several other mehtodologies have evolved over the time to achieve this goal. Some of the procedures like having evaluation nursery , subjecting inbreeding populations to high density, discouraging use of knife to clip silk/husk have greatly improved efficiency of selection. Simultaneously, some of the new tools like doubling of monoploids, tissue culture and biotechnology are beginning to show promise. Recently with increasing emphasis on use of SX hybrids in tropics, seed yield of inbreds and its producibility have drawn greater attention of breeders.

English

0208|AGRIS 0201|AL-Maize Program|R01PROCE

Juan Carlos Mendieta

CIMMYT Publications Collection

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