Identification of RILs for agronomic and grain quality traits in rice through Intraspecific crosses

• Published in: Crop breeding and applied biotechnology Vol. 24; no. 1
• Main Authors: Silva, Raissa Martins da, Thurow, Liamara Bahr, Nardino, Maicon, Oliveira, Victoria Freitas de, Lopes, Jennifer Luz, Maltzahn, Latoia Eduarda, Venske, Eduardo, Pegoraro, Camila, Maia, Luciano Carlos da, Oliveira, Antonio Costa
• Format: Journal Article
• Language: English; Portuguese
• Published: Crop Breeding and Applied Biotechnology 2024
• Subjects: AGRONOMY; BIOTECHNOLOGY & APPLIED MICROBIOLOGY; Oryza sativa L; BLUP analysis; biometric models; cooking quality; industrial quality
• ISSN: 1518-7853; 1984-7033; 1984-7033
• DOI: 10.1590/1984-70332024v24n1a05

Abstract This study aimed to select recombinant lines and explore phenotypic and genotypic correlations using BLUP. It was conducted in Capão do Leão/RS during two years, in an incomplete block design with intercalary controls, with four replications. 131 and 128 RILs were tested in the F6 in the F7 generations, respectively. Plant height; days to flowering; panicle length; number of panicles per plant; number of fertile and sterile spikelets per panicle; one hundred grains weight; yield per plant; broken, chalky, white-belly and red-streaked grains; vitreous whiteness; gelatinization temperature; and apparent amylose content were obtained. According to the study, line F105 is an elite line for improving grain quality, exhibiting high amylose content (27.041%). Canonical (r=0.817), phenotypic (0.541) and genotypic (0.808) correlations inferred that groups of grain quality and agronomic traits were not independent and there was a tendency for the amylose content to be associated with grain yield.