Characterization of sorghum msd mutants

Grain number per panicle (GNP) is a major determinant of grain yield in cereals. However, the mechanisms that regulate GNP remain unclear. To address this issue, we isolated a series of sorghum [Sorghum bicolor (L.) Moench] multiseeded (msd) mutants that can double GNP by increasing panicle size and altering floral development so that all spikelets are fertile and set grain.

穗粒数（GNP）是谷物产量的重要决定因素。然而，调控穗粒数的机制尚不明确。为解决此问题，我们分离出一系列高粱（Sorghum bicolor (L.) Moench）多粒种子（msd）突变体，这些突变体通过增加穗长和改变花发育，使得所有颖果均具育性并形成籽粒，从而将穗粒数翻倍。