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Cross-bred performance study of some of the nepalese yellow maize populations

By: Koirala, K.B | Centro Internacional de Mejoramiento de Maíz y Trigo CIMMYT, Nepal (India) | Proceedings of a Maize Symposium Kathmandu (Nepal) 3-5 Dec 2001.
Contributor(s): Gurung, B.D [coaut.] | Rajbhandari, N.P.|Ransom, J.K.|Adhikari, K.|Palmer, A.F.E [eds.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Kathmandu (Nepal) NARC|CIMMYT : 2002Description: p. 93-99.ISBN: 99933-205-1-X.Subject(s): Crop yield | Heterosis AGROVOC | Maize | Nepal | Varieties | CIMMYT | NARC | Hybrids AGROVOC | Plant breeding AGROVOCDDC classification: 631.536 Summary: Seven yellow maize populations were crossed in a 7 x 7 diallel mating system during 1999. The parents and their crosses were evaluated at four locations during the summer 2000. Overall mean grain yield for parents and their crosses was 5262 and 6069 kg/ha, respectively. Among the parents, Hill Pool Yellow produced the highest mean grain yield (6430 kg/ha) followed by Rampur Composite (6042 kg/ha). High-parent heterosis for grain yield ranged from -17.8 (Rampur Composite x Rampur 2) to 23.9% (Khumal Yellow x Upahar). Non-significant G x E interactions for grain yield were recorded. Highly significant differences for grain yield were observed for entries and parents and significant differences for parents vs. crosses and crosses and SCA. GCA effects were found non-significant for yield. Crosses, namely Upahar x Khumal Yellow, Upahar x Arun 4 and Hill Pool Yellow x Khumal Yellow produced 7215,7180 and 6799 kg/ha grain yields, respectively showing high-parent heterosis of more than 20%. These can be used as non-conventional hybrids. The possible heterotic partner(s) for the evaluated maize populations are Upahar with Arun 4, Rampur Composite and Khumal Yellow, Hill Pool Yellow with Khumal Yellow and Arun 2 with Rampur Composite and Rampur 2. Days to silking and plant and ear heights were found reduced for crosses compared to their parents.Collection: CIMMYT Publications Collection
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Book CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 631.536 RAJ (Browse shelf) 1 Available K631641
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Seven yellow maize populations were crossed in a 7 x 7 diallel mating system during 1999. The parents and their crosses were evaluated at four locations during the summer 2000. Overall mean grain yield for parents and their crosses was 5262 and 6069 kg/ha, respectively. Among the parents, Hill Pool Yellow produced the highest mean grain yield (6430 kg/ha) followed by Rampur Composite (6042 kg/ha). High-parent heterosis for grain yield ranged from -17.8 (Rampur Composite x Rampur 2) to 23.9% (Khumal Yellow x Upahar). Non-significant G x E interactions for grain yield were recorded. Highly significant differences for grain yield were observed for entries and parents and significant differences for parents vs. crosses and crosses and SCA. GCA effects were found non-significant for yield. Crosses, namely Upahar x Khumal Yellow, Upahar x Arun 4 and Hill Pool Yellow x Khumal Yellow produced 7215,7180 and 6799 kg/ha grain yields, respectively showing high-parent heterosis of more than 20%. These can be used as non-conventional hybrids. The possible heterotic partner(s) for the evaluated maize populations are Upahar with Arun 4, Rampur Composite and Khumal Yellow, Hill Pool Yellow with Khumal Yellow and Arun 2 with Rampur Composite and Rampur 2. Days to silking and plant and ear heights were found reduced for crosses compared to their parents.

English

0304|AGRIS 0301|AL-Maize Program|R01PROCE

Juan Carlos Mendieta

CIMMYT Publications Collection

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