Grain-filling problem in ‘super’ rice
WebDec 1, 2024 · It is generally accepted that poor grain filling of rice plants under high nitrogen (N) input is due to increased competition for assimilates because high N rate usually results in large sink size with more spikelets per panicle. WebJul 21, 2024 · The results showed that shading after heading significantly decreased the spikelet-filling rate and grain weight, as well as the dry weight of grains panicle –1, 30 d after shading; these traits were closely related to the grain yield of rice. Hence, the grain yield decreased by 13.72–22.54% and 6.86–14.35% at Hanyuan and Wenjiang ...
Grain-filling problem in ‘super’ rice
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WebRice grain filling determines grain weight, final yield and grain quality. Here, a rice defective grain filling mutant, gif2, was identified.Grains of gif2 showed a slower filling … Starch in rice grains contributes 80–90% of the final dry weight of an unpolished grain (Yoshida, 1972; Duan and Sun, 2005). Grain-filling is actually a process of starch accumulation and it has been reported that there are 33 major enzymes involved in the metabolism of carbohydrates in developing rice endosperm … See more Rice (Oryza sativa L.) is one of the most important food crops in the world. Providing 35–60% of the dietary calories, rice is consumed by more than 3 billion people (Fageria, 2007). In the last half-century, world rice … See more Poor grain-filling of the later-flowering inferior spikelets of modern rice cultivars with numerous spikelets per panicle, especially for ‘super’ rice, is a serious problem and frequently limits yield potential. … See more The slow grain-filling rate and low grain weight of inferior spikelets have often been attributed to a limitation in carbohydrate supply (Sikder and Gupta, 1976; Murty and Murty, 1982; Zhu … See more Grain-filling in cereals depends on carbon from two sources: current assimilates and assimilates redistributed from reserve pools in vegetative tissues either pre- or post-anthesis … See more
WebDuring rice grain filling process, ABA content in developing grains fluctuates continuously, which is regulated by multi-stage processes involving ABA synthesis, catabolism and transport, and also affected by environmental conditions exposed. ... Grain-filling problem in ‘super’ rice. J Exp Bot, 61 (1): 1-5. [Cited Within:1] [19] You C C ... WebJul 21, 2024 · The results showed that shading after heading significantly decreased the spikelet-filling rate and grain weight, as well as the dry weight of grains panicle –1, 30 d …
WebMay 30, 2024 · Rice quality is directly determined by grain filling of rice spikelets, which is largely regulated by changing environments, like temperature, light and water. Adverse reproductive stage environments remarkably decrease rice quality by affecting starch biosynthesis process. WebRecent studies, however, have shown that carbohydrate supply should not be the major problem because they have adequate sucrose at their initial grain-filling stage. The low …
WebAug 1, 2024 · The grain filling of inferior spikelets is much less complete than that of superior spikelets in rice cultivars with large panicles and numerous spikelets and is promoted by moderate soil drying (MD) post-anthesis. A growing body of evidence has shown that microRNAs function in regulating grain development.
WebOct 27, 2024 · To investigate the differential responses of super rice grain filling to low filling stage temperature (LT) and the regulative effect of nitrogen panicle fertilizer (NPF), physiological and molecular experiments were conducted with two super rice varieties (Nanjing 7th: N7 and Nanjing 9108th: N9108) on two different filling stage temperature … north forks brenin cardiWebAbstract. Modern rice (Oryza sativa L.) cultivars, especially the newly bred 'super' rice, have numerous spikelets on a panicle with a large yield capacity. However, these … north fork shoshone riverWebApr 21, 2024 · However, the high yield potential of ‘super’ rice cultivars, which have numerous spikelets with a large capacity, frequently fails to manifest in high grain yield due to either sterility or slow or poor filling of inferior spikelets. north fork siuslaw rdhttp://www.ricescience.org/article/2024/1672-6308-28-4-317.html north fork siuslaw riverWebOct 6, 2024 · Poor grain filling, characterized by incidence of partially filled grain, is one of the major problems to be improved for maximizing the yield potential in rice (Oryza sativa L.) cultivars with ... how to say book in japaneseWebMay 15, 2024 · Increase in rice production through breeding programme is near saturation. • Poor grain filling in heavy panicles is the bottleneck in increasing rice production. • Low activity of the grain filling enzymes is the major cause of loss in grain yield. • Genetic manipulation of the grain filling enzymes could increase rice production. Keywords north fork salmon riverWebApr 12, 2024 · Jiangxi Research and Development Center of Super Rice, Nanchang 330200, China * ... and solve the main problems of heat tolerance in rice progressively. ... Mitsui, T. Golgi/plastid-type manganese superoxide dismutase involved in heat-stress tolerance during grain filling of rice. Plant Biotechnol. J. 2015, 13, 1251–1263. how to say book in hindi