RFLP mapping of genes conferring complete and partial resistance to blast in a durably resistant rice cultivar.
Moroberekan, a japonica rice cultivar with durable resistance to blast disease in Asia, was crossed to the highly susceptible indica cultivar, CO39, and 281 F7 recombinant inbred (RI) lines were produced by single seed descent. [1]
Rice cultivar evaluation for phosphorus use efficiency
Phosphorus deficiency is one of the most growth-limiting factors in acid soils in various parts of the world. The objective of this study was to screen 25 rice cultivars (Oryza sativa L.) at low, medium, and high levels of soil P. Number of tillers, root length, plant height, root dry weight and shoot dry weight were related to tissue P concentrations, P uptake and P-use efficiency. [2]
Pyramiding three bacterial blight resistance genes (xa5, xa13 and Xa21) using marker-assisted selection into indica rice cultivar PR106
Bacterial blight (BB) of rice caused by Xanthomonas oryzae pv. oryzae (Xoo) is a major disease of rice in several countries. Three BB resistance genes, xa5, xa13 and Xa21, were pyramided into cv. PR106, which is widely grown in Punjab, India, using marker-assisted selection. [3]
Rice Cultivar Production and Seed Overwinter Potential in Upstate Missouri
Climate change and opportunities for pharmaceutical rice (Oryza sativa L.) production in the U.S. may affect future production opportunities. Field research in 2005–2007 at Bethel (39º56’N, 92º3’W) and in 2005 at Novelty (40º01’N, 92º11’W) evaluated the production potential of rice cultivars (10 conventional or hybrid varieties), overwinter seed survival, and the effects of weeds on yield in upstate Missouri. [4]
Ranking Traditional Rice Cultivars Based on Yield and Some Morphological Traits using Path Analysis, Multi-Criteria Decision Making Model and Compromise Programming
Aims: To rank traditional rice cultivars based on yield and some morphological traits.
Study Design: Experiment was conducted with four replications according to the randomized complete block design. Germinated seeds were planted in rows with 15 cm X 20 cm spacing with twenty plants per each line and three lines per each replication. Data were collected in middle raw of each three lines in four replicates. [5]
Reference
[1] Wang, G.L., Mackill, D.J., Bonman, J.M., McCouch, S.R., Champoux, M.C. and Nelson, R.J., 1994. RFLP mapping of genes conferring complete and partial resistance to blast in a durably resistant rice cultivar. Genetics, 136(4), pp.1421-1434.
[2] Fageria, N.K., Wright, R.J. and Baligar, V.C., 1988. Rice cultivar evaluation for phosphorus use efficiency. Plant and Soil, 111(1), pp.105-109.
[3] Singh, S., Sidhu, J.S., Huang, N., Vikal, Y., Li, Z., Brar, D.S., Dhaliwal, H.S. and Khush, G.S., 2001. Pyramiding three bacterial blight resistance genes (xa5, xa13 and Xa21) using marker-assisted selection into indica rice cultivar PR106. Theoretical and Applied Genetics, 102(6-7), pp.1011-1015.
[4] Sandler, L., Nelson, K. A. and Smoot, R. L. (2012) “Rice Cultivar Production and Seed Overwinter Potential in Upstate Missouri”, Journal of Experimental Agriculture International, 2(3), pp. 426-441. doi: 10.9734/AJEA/2012/1385.
[5] Ranawake, A. L., Amarasinghe, U. G. S. and Senanayake, S. G. J. N. (2014) “Ranking Traditional Rice Cultivars Based on Yield and Some Morphological Traits using Path Analysis, Multi-Criteria Decision Making Model and Compromise Programming”, Journal of Experimental Agriculture International, 4(12), pp. 1579-1592. doi: 10.9734/AJEA/2014/11325.
