Agronomic characterization of M4 mutant lines of Pinilisa under irrigated wetland condition
2019
Empeynado, C.K.DC. | Barrientos, D.S. | Vizmonte, P.T.Jr.
The study was conducted at the Department of Crop Science, College of Agriculture, Central Luzon State University, Science City of Muñoz, Nueva Ecija [Philippines]. The study aimed to (1) identify and selected desirable mutants for further testing; (2) evaluate the response of mutant lines to pest and diseases and; (3) determine the relationship of mutant lines in terms of agronomic characteristics. The experiment was set up in five blocks following the Augmented Design with twenty-five mutant lines and three check varieties replicated per block. Agronomic characterization of M4 generation mutant lines revealed better mutants compare to Pinilisa in terms of days to 50% flowering, days to maturity, percent filled spikelet per panicle, number of filled spikelet per panicle, number of productive tillers, 1000 grain weight and computed yield at 14% MC. Mutants are shorted than Pinilisa. Mutants have longer grain length but lower grain width than Pinilisa. The results showed that most of the mutants characterized had 1% and 3% rating on stemborer infestation and four mutants had 0% rating of infestation. Pinilisa's infestation rating is 9%. The maturity of the mutant lines ranges from 111-121 days after sowing (DAS). Yield (t/ha) of mutants ranges from 4.48 t/ha to 8.18 t/ha. All mutants characterized are identified as promising lines. Correlation analysis showed that three is a strong linear relationship between occurrence of pest and diseases, 1000 grain weight and grain yield while a moderate linear relationship between days to 50% flowering, days to maturity, grain length and number of filled spikelet per panicle. Grain yield has a strong linear relationship between 1000 grain weight.
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Este registro bibliográfico ha sido proporcionado por University of the Philippines at Los Baños