Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 Page 37 Page 38 Page 39 Page 40 Page 41 Page 42 Page 43 Page 44 Page 45 Page 46 Page 47 Page 48 Page 49 Page 50 Page 51 Page 52 Page 53 Page 54 Page 55 Page 56 Page 57 Page 58 Page 59 Page 60 Page 61 Page 62 Page 63 Page 64 Page 65 Page 66 Page 67 Page 68 Page 69 Page 70 Page 71 Page 72 Page 73 Page 74 Page 75 Page 7653 IREC Farmers' Newsletter No. 195 ­ – Rice R&D 2016 Market acceptance Both breeding lines are targeted at higher-value end use markets to maximise grower returns. The grain size of YRM70 is targeted at the Middle East market and YRK5 fits with Opus for the growing domestic market for sushi rice. The pure seed scheme has multiplied sufficient seed (up to 1000 tonnes) of both lines in the event of commercial release in the C2017 season. Successful release will depend on consumer acceptance surveys in key markets for each line, however initial results have been promising for both YRM70 and YRK5. Future releases in the breeding program may include varieties with low glycaemic index (GI) eating characteristics in both long and medium-grain types. A low GI indicates prolonged uptake of carbohydrates in the digestive system with a slower release of sugars into the bloodstream after eating, which has reported health benefits particularly in the prevention of diabetes and related disorders. Low GI rice types are a growing market segment with increasing consumer focus on the health properties of staple foods and an increase in the prevalence of diabetes across important international markets for Australian rice. Promising breeding lines undergoing evaluation currently include a cold tolerant, low GI long-grain line comparable to Doongara, and a medium-grain low GI line suited to production in systems with delayed permanent water. RIRDC Project PRJ-009950 Australian Rice Partnership II The breeding program is part of the Australian Rice Partnership II project, which also includes rice quality evaluation and the rice pure seed scheme. It is funded through a collaborative partnership between NSW DPI, SunRice and RIRDC. The Australian Rice Partnership II project involves the following people: l Dr Peter Snell, Rice Breeder l Dr Ben Ovenden, Rice Breeder l Dr Laura Pallas, Cereal Chemist l Russell Ford, RRAPL Manager More information Ben Ovenden T: 02 6951 2679 E: [email protected] l Figure 2. Grain yield performance by sowing date in breeding program trials over four years for Reiziq and YRM70. Earlier sowing times favour Reiziq over YRM70, while in later sowing times YRM70 performs better than Reiziq. l Figure 3. Grain yield performance of YRM70 compared to Reiziq at early microspore temperatures under the critical threshold of 15o C. The response illustrates cold tolerance performance of YRM70 similar to Sherpa. l Figure 4. Grain yield performance of YRK5 compared to Opus at early microspore temperatures under the critical threshold of 15o C. The response illustrates cold tolerance performance of YRK5 similar to Sherpa. Grain yield (t/ha @ 14%) Grain yield (t/ha @ 14%) YM temp (rolling 9 day average) YM temp (rolling 9 day average) Sowing date Grain yield (t/ha @ 14%) ● Reiziq YRM70 ● Reiziq YRM70 .... Sherpa ● Opus YRK5 .... Sherpa