数字农科院2.0

Multifloret spikelet improves rice yield

文献类型： 外文期刊

作者： Deyong Ren ; Yunfeng Li ; Guanghua He ; Qian Qian *

作者机构：

关键词： Floret Number; Lateral Floret; Multifloret Spikelet; Rice Yield; Spikelet Determinacy And Indeterminacy

期刊名称： New Phytologist

ISSN： 0028-646X

年卷期： 2020 年 225 卷 6 期

页码：

收录情况： JCR（2021版）

摘要： The typical rice (Oryza sativa) spikelet contains a single fertile floret and produces only one grain; by contrast, Brachypodium distachyon spikelets contain multiple fertile florets and produce several grains. To increase yield, rice breeders have traditionally focused on panicle morphology (branch number and length, spikelet density), but have not considered the number of florets in each spikelet. Production of rice spikelets with more florets could further increase the number of grains per panicle. Here, we describe two novel approaches - altering meristem determinacy and restoring lateral floret formation - for breeding rice cultivars with a multifloret spikelet, thereby increasing the number of grains per panicle and potentially improving yield.

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