Abstract Upland rice (Oryza sativa L.) production requires cultivars that combine early flowering, high grain yield, and market-acceptable grain. Since flowering time and yield are quantitative traits, recurrent selection is an effective breeding strategy. This study aimed to identify superior populations from the first cycle (CI) of the upland rice recurrent selection program for early flowering and high yielding. 21 S 0 populations from CI and two commercial cultivars were evaluated in a randomized complete block design with three replications. Agronomic and grain quality traits, and a multi-trait Z-index were assessed. Diallel analysis estimated general and specific combining ability. Six S 0 CI populations showed superior multi-trait performance. Parents G1 and G5 contributed the highest frequency of favorable alleles across key traits. The hybrid combinations G1 × BRSMG Caçula and G5 × G6 showed the greatest genetic complementarity. These results confirm the effectiveness of recurrent selection for improving earliness and yield in upland rice.
Abstract This study aimed to evaluate the General Combining Ability (GCA) and Specific Combining Ability (SCA) of soybean germplasm adapted to tropical regions. Ten soybean crosses from six tropical-adapted varieties were performed which revealed substantial genetic variability in seven agronomic traits. Genetic varian...
José Israel López Rodríguez, A. A. M. Vargas, Oswalt R. Jiménez Caldera et al.· Crop Breeding and Applied Bi...· 0 citations
Sweet corn is a high-value commodity whose productivity can be improved through hybrid variety development. The development of superior hybrids depends on establishing inbred lines with superior agronomic performance and broad phenotypic variability as the basis for parental selection. This study aimed to evaluate agro...
Jelita Sari Muluk, P. D. Dewi Hayati, Netti Herawati et al.· Vegetalika· 0 citations
This study assessed genetic variability, agronomic performance, and breeding potential of 51 sesame (Sesamum indicum L.) genotypes from the genebank of the Agricultural Research Corporation and three farmer-preferred varieties under irrigated conditions at the Kassala and Gash Station (Kalahoot Scheme) Farm during the...
Elawad Mohammad Sedig, M. M. Beshir, A. E. Idris et al.· Journal of Agriculture and E...· 0 citations
Yellow-pericarp sorghum landraces have value for food, feed and dryland production, but their breeding progress is constrained by limited selectable variability. This study quantified induced variability for 11 yield and yield contributing traits in 39 M₅ mutant derivatives of the rabi landrace Udgir Piwali, together w...
Subhash Kumar, H. Kalpande, A. More et al.· Genetics and Molecular Resea...· 0 citations
Best parents and F1 hybrids were identified based on general combining ability (GCA), specific combining ability (SCA), and high heterotic performance by analyzing the yield characters of 19 Indian mustard lines crossed with three male parents (testers). Significant genetic variability was observed among genotypes for...
I. Rialch, Gurpreet Kaur, Baudh Bharti· Bangladesh Journal of Botany· 0 citations
The present investigation was carried out at Agricultural Research Station Peddapuram during the Rabi season of 2025–2026 to evaluate combining ability, genetic variance components and progeny contributions for grain yield and 12 yield-attributing traits in maize (Zea mays L.). The experimental material, comprising 56...
T. J. Kumar, P. V. R. Rao, I. S. Kumar et al.· Journal of Advances in Biolo...· 0 citations
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