2018
DOI: 10.1016/j.fcr.2018.01.035
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Characterization of high-yielding rice cultivars with different grain-filling properties to clarify limiting factors for improving grain yield

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Cited by 80 publications
(49 citation statements)
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“…However, the growth of rice grains also has an obvious apical advantage [12,54], that is, the growth of superior grains from the top panicle obviously inhibits that of inferior grains from the lower panicle. After the superior spikelets were thinned or removed, the seed setting rate, grain weight and sucrose content, hormone levels, activities of key enzymes, and the expression levels of genes involved in sucrose-to-starch metabolism in inferior spikelets were all enhanced [55,56]. Moreover, the growth of inferior grains can be significantly promoted by eliminating or reducing the inhibition from the superior grains of the top panicle [55,56].…”
Section: Discussionmentioning
confidence: 99%
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“…However, the growth of rice grains also has an obvious apical advantage [12,54], that is, the growth of superior grains from the top panicle obviously inhibits that of inferior grains from the lower panicle. After the superior spikelets were thinned or removed, the seed setting rate, grain weight and sucrose content, hormone levels, activities of key enzymes, and the expression levels of genes involved in sucrose-to-starch metabolism in inferior spikelets were all enhanced [55,56]. Moreover, the growth of inferior grains can be significantly promoted by eliminating or reducing the inhibition from the superior grains of the top panicle [55,56].…”
Section: Discussionmentioning
confidence: 99%
“…After the superior spikelets were thinned or removed, the seed setting rate, grain weight and sucrose content, hormone levels, activities of key enzymes, and the expression levels of genes involved in sucrose-to-starch metabolism in inferior spikelets were all enhanced [55,56]. Moreover, the growth of inferior grains can be significantly promoted by eliminating or reducing the inhibition from the superior grains of the top panicle [55,56]. This is another important reason for the differences in grain growth between the upper and lower branches.…”
Section: Discussionmentioning
confidence: 99%
“…Grain-lling is a pivotal grain weight determinant factor and has a great impact on rice potential yield. High yielding rice cultivars that have been developed in many rice producing countries are characterized by having extra-large sink capacity but differed greatly in grain-lling ability [3,4]. Although both grain-lling rate and duration are associated with grain weight, high grain weight was attributed to a high grain-lling rate [5].…”
Section: Introductionmentioning
confidence: 99%
“…Although both grain-lling rate and duration are associated with grain weight, high grain weight was attributed to a high grain-lling rate [5]. Although high yielding rice cultivars that have large panicles or/and extra heavy panicles with a large number of spikelets per panicle have become available, e.g., the New Plant Type, hybrid rice and 'super' rice [4,6,7], those cultivar however and due to their poor grainlling do not reach their high yield potential…”
Section: Introductionmentioning
confidence: 99%
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