NSIC Rc438 variety suitable for wet seeding and transplanting culture in irrigated lowland areas
2018
Braceros, R.C. | Pautin, L.R. | Padolina, T.F. | Arocena, E.C. | Dela Cruz, A.A. | Duque, M.J.C. | Osoteo, G.M. | Pariñas, J.F. | Manangkil, O.E.
Developing new variety for direct wet seeded and irrigated lowland ecosystem is very important to sustain rice productivity needed for the country's food security. For the past decades, advances in plant breeding techniques helped improved new varieties with useful genetic traits which made them more stable and widely adaptable. One of these elite lines, PR37241-3-1-2-1-1 was developed in 2006 using Marker-Aided Selection breeding for bacterial leaf blight resistance and was extensively evaluated in NCT 2012DS to 2013WS and in MAT from 2014WS to 2015WS. In 2016, PR37241-3-1-2-1-1 passed the standards for yield and other agronomic traits, pest reactions and grain quality for national recommendation in Luzon and Visayas. It was formally approved by the National Seed Industry Council (NSIC) on November 2016 and was registered NSIC 2016 Rc438 with local name Tubigan 38. Tubigan 38 matures in 106 days with number of productive tillers of 13, and medium height measuring 98cm yield was consistently 5 to 6.3 t/ha across season and with a maximum yield of 10.2 t/ha in Luzon. Its stability was contributed by good reactions to the major insect pests and diseases such as blast, bacterial blight, sheath blight, white and yellow stem borers, and green leaf hoppers. However, it should not be planted in tungro hot spot areas. This variety also passed grain quality standards including eating quality. It has intermediate amylose content (19.3%) with medium (6.5mm) and intermediate shape of (2.9mm), with premium milling recovery (72.2%), fair brown rice (77.9%) and grade 2 head rice recovery (40.7%). It has good eating quality and high acceptability in raw compared to PSB Rc82 and IR64.
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