Assessment of Genetic Variability and Bran Oil Characters of New Developed Restorer Lines of Rice (Oryza sativa L.)

Mamdouh M A Awad-Allah; Azza H Mohamed; Mohamed A El-Bana; Samira A F El-Okkiah; Mohamed F M Abdelkader; Mohamed H Mahmoud; Mohamed Z El-Diasty; Manal M Said; Sahar A M Shamseldin; Mohamed A Abdein

doi:10.3390/genes13030509

Assessment of Genetic Variability and Bran Oil Characters of New Developed Restorer Lines of Rice (Oryza sativa L.)

Genes (Basel). 2022 Mar 13;13(3):509. doi: 10.3390/genes13030509.

Authors

Affiliations

¹ Agricultural Research Center, Rice Research Department, Field Crops Research Institute, Giza 12619, Egypt.
² Department of Agricultural Chemistry, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt.
³ Citrus Research & Education Center, University of Florida, IFAS, Lake Alfred, FL 33850, USA.
⁴ Agricultural Research Center, Food Technology Institute, Giza 12619, Egypt.
⁵ Department of Agriculture Botany, Faculty of Agriculture, Kafr El-Sheikh University, Kafr El-Sheikh 33516, Egypt.
⁶ Department of Plant Production, College of Food and Agriculture, King Saud University, Riyadh 12372, Saudi Arabia.
⁷ Department of Biochemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
⁸ Genetic Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt.
⁹ College of Biotechnology, Misr University for Science and Technology, Giza 12563, Egypt.
¹⁰ Botany Department, Women's College for Arts, Science and Education, Ain Shams University, Cairo 11566, Egypt.
¹¹ Biology Department, Faculty of Arts and Science, Northern Border University, Rafha 91911, Saudi Arabia.

Abstract

Rice is one of the most important crops in Egypt. Due to the gap between the demand and the availability of the local edible oils, there is need to raise the nutritional value of rice and, therefore, to improve the nutritional value of the consumer. This research was carried out at the Experimental Farm of Sakha Agricultural Research Station, Sakha, Kafr El-Sheikh, Egypt, during the 2019 and 2020 seasons. Five newly developed genotypes of rice, namely NRL 63, NRL 64, NRL 65, NRL 66, and Giza 178 as check variety (control), were used to evaluate the analytical characterization of raw rice bran and rice bran oil from rice bran, study the genetic variability and genetic advance for various quantitative and qualitative traits in rice as well as, rice bran oil. The genotypes were evaluated in a randomized complete block design (RCBD) with three replications. Analysis of variance revealed highly significant variations among the genotypes for all the studied characters. Data revealed that high estimates of the phenotypic coefficient of variance (PCV%) and genotypic coefficient of variance (GCV%) were observed for amylose content percentage, peroxide value (meq/kg oil), myristic C14:0, and arachidic C20:0, indicating that they all interacted with the environment to some extent. The line NRL66 and NRL64 showed the highest and high values of mean performance for grain yield (t/h), grain type (shape), amylose content percentage, crude protein, ether extract and ash of milled rice, crude protein, ether extract, ash, phosphorus, magnesium, manganese, zinc, and iron of stabilized rice bran oil. Genetic advance as a percentage of mean was high for most of the studied traits. It indicates that most likely, the heritability is due to additive gene effects, and selection may be effective. The percentage of advantage over the Giza 178 as the commercial variety was significant and highly significant among the genotypes for all the characters studied in the two years, indicating that the selection is effective in the genetic improvements for these traits.

Keywords: coefficient of variation; genetic advance; genetic variability; rice; rice bran oil.

MeSH terms

Amylose / analysis
Ether
Oryza* / genetics
Plant Extracts
Rice Bran Oil

Substances

Plant Extracts
Ether
Amylose
Rice Bran Oil