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Mutation is an impressive method to induce potent characteristics in rice breeding programs. Evaluation of the phenotypic performance in mutant populations is important to examine the effectiveness of mutation. In this study, two rice mutant populations generated from MNU (Nmethyl-N-Nitrosourea)-induced mutation were used to evaluate their phenotypes. The results showed that all of varieties and mutants expressed their ability to adapt with new environmental condition via the expression of agronomic traits. Grain yield of them ranged from 6.18 to 10.70 tons/ha. In general, population BC15TB × SKLo performed their best characters. The distribution of related traits to grain yield and amylose content were also different from each population. These results indicated that mutants expressed better characters than their parents. This study provided general information on the phenotype of rice mutants and varieties in the new environment and revealed the better-adapted characteristic of rice mutants. Findings of this study confirmed the efficacy of MNU in rice breeding and promising new potential mutants for rice breeding.

journal of horticulture and plant research

Phenotypic Performance of Rice (&lt;i&gt;Oryza sativa &lt;/i&gt;L&lt;i&gt;.&lt;/i&gt;) Populations Induced by the MNU Mutant on the Adaptive Characteristics