Participatory evaluation and adaptive trial of resources-use of efficient rice lines in Lopez, Quezon and Pamplona, Camarines Sur [Philippines]
2018
Dela Rosa, D.G.M. | Lopez, P.I.M. | Bonza, J.R.M. | Magnaye, A.M.A. | Malabanan-Bauan, K.B. | Lalican, D.J. | Bon, S.G. | Sister, L.E. | Borromeo, T.H. | Hernandez, J.E. | Ali, J.
In varietal development, selection of promising rice lines based on combination of researcher's empirical data and farmers's preference is crucial to ease farmer varietal adoption once the lines become released as new varieties. This study, which is part of the development of Resource-use Efficient Rice (RUE) rice lines, aimed to identify acceptable and adaptable RUE lines for rainfed lowland condition in line with farmer preferences. In 2017 wet season, six on-farm adaptive trials of 20 RUE lines were established in Lopez, Quezon (Region 4-A) and Pamplona, Camarines Sur (Region 5). Evaluation of the RUE lines were based on grain yield, yield adaptability and farmers' phenotypic acceptability (PA) rating. GxE analysis across locations showed that six RUE lines were generally adaptable in the target environment. What-won-where biplot per municipality identified the top performing RUE lines with high yield adaptability, namely IR1-12-D10-S1-D1 (3477.07 kg/ha) in Lopez, and IR1-DQ121-L19-L1 (3123.93 kg/ha) and IR1-12-Y4-Y1-D1 (3189.8 kg/ha) in Pamplona. These top-performers also had good phenotypic acceptability based on farmers' criteria including resistance to lodging, reaction to pest and diseases, maturity, panicle type and over-all crop stand.
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