New rice varieties for saline-prone irrigated lowland
2019
Balmeo, K.R.P. | Ticman, H.T. | Bagavra, J.C. | Cabusora, C.C. | Valida, G.D. | Chico, M.V. | Niones, J.M. | Orbase, M.A.R. | Parinas, J.F. | Rillon, J.P. | Santiago, G.dC. | Bandonill, E.H. | Desamero, N.V.
On the 0.5 to 0.6 million hectares of saline-prone coastal agricultural area in the Philippines, 0.2 million are considered seriously salt-affected soils (FAO, 2010). Using salt tolerant rice varieties is a viable, economical and sustainable adapting mechanism to enhance rice production and productivity in the marginalized salt-stressed rice areas. Developing new high yielding varieties with tolerance to salinity is continuously done at PhilRice to address the need. Currently two new varieties developed by PhilRice were registered at National Seed Industry Council (NSIC) for commercial release. The new variety NSIC 2018 Rc 528 was line PR38456-B-12-1-1-B derived from the three-way cross IVC 167/NSIC Rc134/NSIC 2015 Rc416 in 2007/WS, followed by a series of evaluation and selection from 2008 to 2012, and entered in the National Cooperative Testing (NCT) for saline-prone environment in 2015. The second variety was line PR38121-B-27-B-B-B derived from the single cross PR30245-IR64-1-4-6/NSIC Rc 128 in 2007DS, evaluated from 2007-2012 and entered in the NCT in 2015 Both lines with salinity tolerance surpassed the check variety, and were recommended to Technical Secretariat in 2017, and finally released for commercial cultivation in 2018. PR38456-B-12-1-1-B has 33.7% and PR38121-B-27-B-B-B has 24.8% yield advantage across seasons over PSB Rc90 with an average yield of 2158 kg. The two lines have grain quality acceptability comparable to IR64. The new NSIC released varieties are now ready for commercialization promotion and dissemination.
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