Mostrar el registro sencillo del ítem

Genetic variability of tropical maize stover quality and the potential for genetic improvement of food-feed value in India

Autor: Zaidi, P.H.
Autor: Vinayan, M.T.
Autor: Blummel, M.
Año: 2012
ISSN: 0378-4290
URI: http://hdl.handle.net/10883/3188
URI: http://hdl.handle.net/10883/3188
Resumen: Sixty elite maize inbred lines were selected from CIMMYT-Asia maize program for stover fodder quality analysis. These lines were selected based on high per se and cross performance across several locations in the Asian tropics and have wide adaptability across the region. The line evaluation trials were conducted using recommended agronomic practices during the off-season of 2009 at ICRISAT farm in Hyderabad, India. Data were recorded on various agronomic traits including yields. At harvest the stover was analyzed for a range of fodder quality traits. On the basis of high stover in vitro digestibility (IVOMD) (a trait chosen because it correlated well with pricing in fodder trading of another coarse stover, namely sorghum) and high grain yield, the top ranking 10 inbred lines were selected and crossed in all possible combinations (excluding reciprocals) using diallel mating design in the rainy season of 2010. A total of 26 crosses along with four commercial hybrid checks were selected and planted in two replicates for evaluation during the dry season of 2010. A wide range in performance was observed in grain and stover traits. Grain and stover yields ranged from 0.94 to 7.3 t/ha (P < 0.0001) and from 2.0 to 8.5 t/ha (P < 0.0001), respectively. Stover IVOMD ranged from 46.9 to 55.5% (P = 0.08). Grain and stover traits showed a considerable degree of independency. Grain and stover yield were significantly positively correlated (r = 0.53; P = 0.003), however, grain yields at around 7.0 t/ha showed varied stover yields ranges from 3.5 to 6 t/ha. No significant correlation was observed between IVOMD and grain yield (r = &#8722;0.12, P = 0.52) or IVOMD and stover yield (r = 0.03; P = 0.98). It is striking that the cross with the third highest grain yield (7.1 t/ha) had the second highest stover digestibility (about 55%).
Lenguaje: English
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Tipo: Article
Pais: India
Región: South Asia
Revista: Field Crops Research
DOI: 10.1016/j.fcr.2012.11.020
Palabras Claves: Maize stover fodder quality
Palabras Claves: Stover genetic enhancement
Palabras Claves: Heterosis effect on stover fodder quality
URI del Editor : http://0-www.sciencedirect.com.precise.petronas.com.my/science/article/pii/S037842901200408X


Ficheros en el ítem

Thumbnail

Este ítem aparece en la(s) siguiente(s) colección(ones)

  • Maize
    Maize breeding, phytopathology, entomology, physiology, quality, and biotech

Mostrar el registro sencillo del ítem